SQL: Document a few functions (elastic/x-pack-elasticsearch#3390)
* Starts to build the list of supported functions, adding links to wikipedia when there is any doubt what the functions mean. * Extracts an example of using the function from the test suite. * Explicitly calls out how we round (half up) because there are lots of ways to round. Original commit: elastic/x-pack-elasticsearch@5fb64ba869
This commit is contained in:
Nik Everett
GitHub
parent
c26f039207
commit
1cf9d6e3f3
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@ -1,11 +1,257 @@
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[[sql-functions]]
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== Functions and Operators
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=== Comparison Operators
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Elasticsearch SQL supports the following comparison operators:
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* Equality (`=`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldEquality]
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--------------------------------------------------
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* Inequality (`<>` or `!=`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldNonEquality]
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--------------------------------------------------
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* Comparison (`<`, `<=`, `>`, `>=`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldLessThan]
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--------------------------------------------------
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* `BETWEEN`
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereBetween]
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--------------------------------------------------
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* `IS NULL`/`IS NOT NULL`
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereIsNotNullAndIsNull]
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--------------------------------------------------
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=== Logical Operators
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Elasticsearch SQL supports the following logical operators:
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* `AND`
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldAndComparison]
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--------------------------------------------------
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* `OR`
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldOrComparison]
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--------------------------------------------------
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* `NOT`
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/filter.sql-spec[whereFieldEqualityNot]
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--------------------------------------------------
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=== Math Operators
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Elasticsearch SQL supports the following math operators:
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* Add (`+`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[plus]
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--------------------------------------------------
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* Subtract (infix `-`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[minus]
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--------------------------------------------------
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* Negate (unary `-`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[unaryMinus]
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--------------------------------------------------
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* Multiply (`*`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[multiply]
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--------------------------------------------------
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* Divide (`/`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[divide]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Modulo_operation[Modulo] (`%`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/arithmetic.sql-spec[mod]
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--------------------------------------------------
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=== Math Functions
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==== Basic
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* https://en.wikipedia.org/wiki/Absolute_value[Absolute value] (`ABS`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[abs]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Rounding#Round_half_up[Round] (`ROUND`)
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TODO make the example in the tests presentable
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NOTE: This rounds "half up" meaning that `ROUND(-1.5)` results in `-1`.
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* https://en.wikipedia.org/wiki/Floor_and_ceiling_functions[Ceiling] (`CEIL`)
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TODO make the example in the tests presentable
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* https://en.wikipedia.org/wiki/Floor_and_ceiling_functions[Floor] (`FLOOR`)
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TODO make the example in the tests presentable
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* https://en.wikipedia.org/wiki/Natural_logarithm[Natural logarithm] (`LOG`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[log]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Logarithm[Logarithm] base 10 (`LOG10`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[log10]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Square_root[Square root] (`SQRT`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[sqrt]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Cube_root[Cube root] (`CBRT`)
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TODO make the example in the tests presentable
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* https://en.wikipedia.org/wiki/Exponential_function[e^x^] (`EXP`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[exp]
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--------------------------------------------------
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* https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#expm1-double-[e^x^ - 1] (`EXPM1`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[expm1]
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--------------------------------------------------
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==== Trigonometric
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* Convert from https://en.wikipedia.org/wiki/Radian[radians]
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to https://en.wikipedia.org/wiki/Degree_(angle)[degrees] (`DEGREES`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[degrees]
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--------------------------------------------------
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* Convert from https://en.wikipedia.org/wiki/Degree_(angle)[degrees]
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to https://en.wikipedia.org/wiki/Radian[radians] (`RADIANS`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[degrees]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Trigonometric_functions#sine[Sine] (`SIN`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[sin]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Trigonometric_functions#cosine[Cosine] (`COS`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[cos]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Trigonometric_functions#tangent[Tangent] (`TAN`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[tan]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Inverse_trigonometric_functions[Arc sine] (`ASIN`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[asin]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Inverse_trigonometric_functions[Arc cosine] (`ACOS`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[acos]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Inverse_trigonometric_functions[Arc tangent] (`ATAN`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[atan]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Hyperbolic_function[Hyperbolic sine] (`SINH`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[sinh]
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--------------------------------------------------
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* https://en.wikipedia.org/wiki/Hyperbolic_function[Hyperbolic cosine] (`COSH`)
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-specs}/math.sql-spec[cosh]
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--------------------------------------------------
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// logical operators
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// comparison
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// conversion
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// math
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// date time
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// aggregate
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@ -7,7 +7,7 @@ Each entry might get its own file and code snippet
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["source","sql",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{sql-spec}/select.sql-spec[wildcardWithOrder]
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include-tagged::{sql-specs}/select.sql-spec[wildcardWithOrder]
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--------------------------------------------------
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//
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unaryMinus
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// tag::unaryMinus
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SELECT - 1 AS x;
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// end::unaryMinus
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plus
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// tag::plus
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SELECT 1 + 1 AS x;
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// end::plus
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minus
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// tag::minus
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SELECT 1 - 1 AS x;
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// end::minus
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divide
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// tag::divide
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SELECT 6 / 3 AS x;
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// end::divide
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multiply
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// tag::multiply
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SELECT 2 * 3 AS x;
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// end::multiply
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mod
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// tag::mod
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SELECT 5 % 2 AS x;
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// end::mod
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operatorsPriority
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SELECT 1 + 3 * 4 / 2 - 2 AS x;
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operatorsPriorityWithParanthesis
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//
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whereFieldEquality
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// tag::whereFieldEquality
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SELECT last_name l FROM "test_emp" WHERE emp_no = 10000 LIMIT 5;
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// end::whereFieldEquality
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whereFieldNonEquality
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// tag::whereFieldNonEquality
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SELECT last_name l FROM "test_emp" WHERE emp_no <> 10000 ORDER BY emp_no LIMIT 5;
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// end::whereFieldNonEquality
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whereFieldNonEqualityJavaSyntax
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SELECT last_name l FROM "test_emp" WHERE emp_no != 10000 ORDER BY emp_no LIMIT 5;
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whereFieldLessThan
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// tag::whereFieldLessThan
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SELECT last_name l FROM "test_emp" WHERE emp_no < 10003 ORDER BY emp_no LIMIT 5;
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// end::whereFieldLessThan
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whereFieldAndComparison
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// tag::whereFieldAndComparison
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SELECT last_name l FROM "test_emp" WHERE emp_no > 10000 AND emp_no < 10005 ORDER BY emp_no LIMIT 5;
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// end::whereFieldAndComparison
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whereFieldOrComparison
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// tag::whereFieldOrComparison
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SELECT last_name l FROM "test_emp" WHERE emp_no < 10003 OR emp_no = 10005 ORDER BY emp_no LIMIT 5;
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// end::whereFieldOrComparison
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whereFieldEqualityNot
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// tag::whereFieldEqualityNot
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SELECT last_name l FROM "test_emp" WHERE NOT emp_no = 10000 LIMIT 5;
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// end::whereFieldEqualityNot
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whereFieldNonEqualityNot
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SELECT last_name l FROM "test_emp" WHERE NOT emp_no <> 10000 ORDER BY emp_no LIMIT 5;
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whereFieldNonEqualityJavaSyntaxNot
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@ -56,8 +69,12 @@ SELECT last_name l FROM "test_emp" WHERE emp_no IS NOT NULL AND emp_no < 10005 O
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whereIsNull
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SELECT last_name l FROM "test_emp" WHERE emp_no IS NULL;
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whereIsNotNullAndIsNull
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// tag::whereIsNotNullAndIsNull
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SELECT last_name l FROM "test_emp" WHERE emp_no IS NOT NULL AND gender IS NULL;
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// end::whereIsNotNullAndIsNull
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whereBetween
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// tag::whereBetween
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SELECT last_name l FROM "test_emp" WHERE emp_no BETWEEN 9990 AND 10003 ORDER BY emp_no;
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// end::whereBetween
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whereNotBetween
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SELECT last_name l FROM "test_emp" WHERE emp_no NOT BETWEEN 10010 AND 10020 ORDER BY emp_no LIMIT 5;
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@ -3,42 +3,78 @@
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//
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mathAbs
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// tag::abs
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SELECT ABS(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::abs
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mathACos
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// tag::acos
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SELECT ACOS(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::acos
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mathASin
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// tag::asin
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SELECT ASIN(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::asin
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mathATan
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// tag::atan
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SELECT ATAN(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::atan
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//mathCbrt
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//SELECT CBRT(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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mathCeil
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// H2 returns CEIL as a double despite the value being an integer; we return a long as the other DBs
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SELECT CAST(CEIL(emp_no) AS INT) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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mathCos
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// tag::cos
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SELECT COS(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::cos
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mathCosh
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// tag::cosh
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SELECT COSH(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::cosh
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mathDegrees
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// tag::degrees
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SELECT DEGREES(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::degrees
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mathExp
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// tag::exp
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SELECT EXP(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::exp
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mathExpm1
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// tag::expm1
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SELECT EXP(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::expm1
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mathFloor
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SELECT CAST(FLOOR(emp_no) AS INT) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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mathLog
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// tag::log
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SELECT LOG(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::log
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mathLog10
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// tag::log10
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SELECT LOG10(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::log10
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mathRadians
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// tag::radians
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SELECT RADIANS(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::radians
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mathRound
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SELECT CAST(ROUND(emp_no) AS INT) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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mathSin
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// tag::sin
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SELECT SIN(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::sin
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mathSinH
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// tag::sinh
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SELECT SINH(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::sinh
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mathSqrt
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// tag::sqrt
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SELECT SQRT(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::sqrt
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mathTan
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// tag::tan
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SELECT TAN(emp_no) m, first_name FROM "test_emp" WHERE emp_no < 10010 ORDER BY emp_no;
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// end::tan
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//
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// Combined methods
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@ -9,6 +9,9 @@ import org.elasticsearch.xpack.sql.expression.Expression;
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import org.elasticsearch.xpack.sql.expression.function.scalar.arithmetic.BinaryArithmeticProcessor.BinaryArithmeticOperation;
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import org.elasticsearch.xpack.sql.tree.Location;
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/**
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* Addition function ({@code a + b}).
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*/
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public class Add extends ArithmeticFunction {
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public Add(Location location, Expression left, Expression right) {
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@ -11,6 +11,9 @@ import org.elasticsearch.xpack.sql.tree.Location;
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import org.elasticsearch.xpack.sql.type.DataType;
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import org.elasticsearch.xpack.sql.type.DataTypeConversion;
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/**
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* Division function ({@code a / b}).
|
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*/
|
||||
public class Div extends ArithmeticFunction {
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|
||||
public Div(Location location, Expression left, Expression right) {
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@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
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import org.elasticsearch.xpack.sql.expression.function.scalar.arithmetic.BinaryArithmeticProcessor.BinaryArithmeticOperation;
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import org.elasticsearch.xpack.sql.tree.Location;
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/**
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* <a href="https://en.wikipedia.org/wiki/Modulo_operation">Modulo</a>
|
||||
* function ({@code a % b}).
|
||||
*/
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||||
public class Mod extends ArithmeticFunction {
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||||
|
||||
public Mod(Location location, Expression left, Expression right) {
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|
|
@ -9,6 +9,9 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.arithmetic.BinaryArithmeticProcessor.BinaryArithmeticOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* Multiplication function ({@code a * b}).
|
||||
*/
|
||||
public class Mul extends ArithmeticFunction {
|
||||
|
||||
public Mul(Location location, Expression left, Expression right) {
|
||||
|
|
|
|||
|
|
@ -15,6 +15,9 @@ import org.elasticsearch.xpack.sql.expression.function.scalar.processor.definiti
|
|||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
import org.elasticsearch.xpack.sql.type.DataType;
|
||||
|
||||
/**
|
||||
* Negation function (@{code -x}).
|
||||
*/
|
||||
public class Neg extends UnaryScalarFunction {
|
||||
|
||||
public Neg(Location location, Expression field) {
|
||||
|
|
|
|||
|
|
@ -9,6 +9,9 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.arithmetic.BinaryArithmeticProcessor.BinaryArithmeticOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* Subtraction function ({@code a - b}).
|
||||
*/
|
||||
public class Sub extends ArithmeticFunction {
|
||||
|
||||
public Sub(Location location, Expression left, Expression right) {
|
||||
|
|
|
|||
|
|
@ -9,6 +9,11 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Inverse_trigonometric_functions">Arc cosine</a>
|
||||
* fuction.
|
||||
*/
|
||||
public class ACos extends MathFunction {
|
||||
public ACos(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Inverse_trigonometric_functions">Arc sine</a>
|
||||
* fuction.
|
||||
*/
|
||||
public class ASin extends MathFunction {
|
||||
public ASin(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,11 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Inverse_trigonometric_functions">Arc tangent</a>
|
||||
* fuction.
|
||||
*/
|
||||
public class ATan extends MathFunction {
|
||||
public ATan(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -10,6 +10,10 @@ import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor
|
|||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
import org.elasticsearch.xpack.sql.type.DataType;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Absolute_value">Absolute value</a>
|
||||
* function.
|
||||
*/
|
||||
public class Abs extends MathFunction {
|
||||
public Abs(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Cube_root">Cube root</a>
|
||||
* function.
|
||||
*/
|
||||
public class Cbrt extends MathFunction {
|
||||
public Cbrt(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -11,6 +11,10 @@ import org.elasticsearch.xpack.sql.tree.Location;
|
|||
import org.elasticsearch.xpack.sql.type.DataType;
|
||||
import org.elasticsearch.xpack.sql.type.DataTypeConversion;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Floor_and_ceiling_functions">Ceiling</a>
|
||||
* function.
|
||||
*/
|
||||
public class Ceil extends MathFunction {
|
||||
public Ceil(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Trigonometric_functions#cosine">Cosine</a>
|
||||
* function.
|
||||
*/
|
||||
public class Cos extends MathFunction {
|
||||
public Cos(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Hyperbolic_function">Hyperbolic cosine</a>
|
||||
* function.
|
||||
*/
|
||||
public class Cosh extends MathFunction {
|
||||
public Cosh(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* Convert from <a href="https://en.wikipedia.org/wiki/Radian">radians</a>
|
||||
* to <a href="https://en.wikipedia.org/wiki/Degree_(angle)">degrees</a>.
|
||||
*/
|
||||
public class Degrees extends MathFunction {
|
||||
public Degrees(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Exponential_function">e<sup>x</sup></a>
|
||||
* function.
|
||||
*/
|
||||
public class Exp extends MathFunction {
|
||||
public Exp(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#expm1-double-">e<sup>x</sup> + 1</a>
|
||||
* function.
|
||||
*/
|
||||
public class Expm1 extends MathFunction {
|
||||
public Expm1(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -11,6 +11,10 @@ import org.elasticsearch.xpack.sql.tree.Location;
|
|||
import org.elasticsearch.xpack.sql.type.DataType;
|
||||
import org.elasticsearch.xpack.sql.type.DataTypeConversion;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Floor_and_ceiling_functions">Floor</a>
|
||||
* function.
|
||||
*/
|
||||
public class Floor extends MathFunction {
|
||||
public Floor(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Natural_logarithm">Natural logarithm</a>
|
||||
* function.
|
||||
*/
|
||||
public class Log extends MathFunction {
|
||||
public Log(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Logarithm">Logarithm</a>
|
||||
* base 10 function.
|
||||
*/
|
||||
public class Log10 extends MathFunction {
|
||||
public Log10(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* Convert from <a href="https://en.wikipedia.org/wiki/Degree_(angle)">degrees</a>
|
||||
* to <a href="https://en.wikipedia.org/wiki/Radian">radians</a>.
|
||||
*/
|
||||
public class Radians extends MathFunction {
|
||||
public Radians(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -11,6 +11,13 @@ import org.elasticsearch.xpack.sql.tree.Location;
|
|||
import org.elasticsearch.xpack.sql.type.DataType;
|
||||
import org.elasticsearch.xpack.sql.type.DataTypeConversion;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Rounding#Round_half_up">Round</a>
|
||||
* function.
|
||||
*
|
||||
* Note that this uses {@link Math#round(double)} which uses "half up" rounding
|
||||
* for `ROUND(-1.5)` rounds to `-1`.
|
||||
*/
|
||||
public class Round extends MathFunction {
|
||||
public Round(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Trigonometric_functions#sine">Sine</a>
|
||||
* fuction.
|
||||
*/
|
||||
public class Sin extends MathFunction {
|
||||
public Sin(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Hyperbolic_function">Hyperbolic sine</a>
|
||||
* function.
|
||||
*/
|
||||
public class Sinh extends MathFunction {
|
||||
public Sinh(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Square_root">Square root</a>
|
||||
* function.
|
||||
*/
|
||||
public class Sqrt extends MathFunction {
|
||||
public Sqrt(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
|
|
@ -9,6 +9,10 @@ import org.elasticsearch.xpack.sql.expression.Expression;
|
|||
import org.elasticsearch.xpack.sql.expression.function.scalar.math.MathProcessor.MathOperation;
|
||||
import org.elasticsearch.xpack.sql.tree.Location;
|
||||
|
||||
/**
|
||||
* <a href="https://en.wikipedia.org/wiki/Trigonometric_functions#sine">Tangent</a>
|
||||
* fuction.
|
||||
*/
|
||||
public class Tan extends MathFunction {
|
||||
public Tan(Location location, Expression field) {
|
||||
super(location, field);
|
||||
|
|
|
|||
Loading…
Reference in New Issue