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17c7f99343
Extend SHOW TABLES, DESCRIBE and SHOW COLUMNS to support table identifiers not just SQL LIKE pattern. This allows both Elasticsearch-style multi-index patterns and SQL LIKE. To disambiguate between the two (as the " vs ' can be easy to miss), the grammar now requires LIKE keyword as a prefix for all LIKE-like patterns. Also added some docs comparing the two types of patterns. Fix #33294
48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
[role="xpack"]
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[testenv="basic"]
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[[sql-syntax-show-functions]]
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=== SHOW FUNCTIONS
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.Synopsis
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[source, sql]
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----
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SHOW FUNCTIONS [ LIKE pattern<1>? ]?
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----
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<1> SQL match pattern
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.Description
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List all the SQL functions and their type. The `LIKE` clause can be used to restrict the list of names to the given pattern.
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["source","sql",subs="attributes,callouts,macros"]
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----
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include-tagged::{sql-specs}/docs.csv-spec[showFunctions]
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----
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The list of functions returned can be customized based on the pattern.
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It can be an exact match:
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["source","sql",subs="attributes,callouts,macros"]
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----
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include-tagged::{sql-specs}/docs.csv-spec[showFunctionsLikeExact]
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----
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A wildcard for exactly one character:
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["source","sql",subs="attributes,callouts,macros"]
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----
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include-tagged::{sql-specs}/docs.csv-spec[showFunctionsLikeChar]
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----
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A wildcard matching zero or more characters:
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["source","sql",subs="attributes,callouts,macros"]
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----
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include-tagged::{sql-specs}/docs.csv-spec[showFunctionsLikeWildcard]
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----
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Or of course, a variation of the above:
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["source","sql",subs="attributes,callouts,macros"]
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----
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include-tagged::{sql-specs}/docs.csv-spec[showFunctionsWithPattern]
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----
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