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SQL: [Docs] Add an ES-SQL column for data types (#37529) 

In order to distinguish the ES-SQL type from the standard SQL type
add a new ES-SQL column that will make clear this distingstion,
e.g.: datetime vs TIMSTAMP

Fixes: #37519
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Marios Trivyzas 2019-01-16 16:16:21 +02:00 committed by GitHub
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49
docs/reference/sql/language/data-types.asciidoc
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@ -5,41 +5,44 @@
beta[]
Most of {es} <<mapping-types, data types>> are available in {es-sql}, as indicated below:
Most of {es} <<mapping-types, data types>> are available in {es-sql}, as indicated below.
As one can see, all of {es} <<mapping-types, data types>> are mapped to the data type with the same
name in {es-sql}, with the exception of **date** data type which is mapped to **datetime** in {es-sql}:
[cols="^,^m,^"]
[cols="^,^m,^,^"]
|===
s|{es} type
s|{es-sql} type
s|SQL type
s|SQL precision
3+h| Core types
4+h| Core types
| <<null-value, `null`>> | null | 0
| <<boolean, `boolean`>> | boolean | 1
| <<number, `byte`>> | tinyint | 3
| <<number, `short`>> | smallint | 5
| <<number, `integer`>> | integer | 10
| <<number, `long`>> | bigint | 19
| <<number, `double`>> | double | 15
| <<number, `float`>> | real | 7
| <<number, `half_float`>> | float | 16
| <<number, `scaled_float`>> | float | 19
| <<keyword, `keyword`>> | varchar | based on <<ignore-above>>
| <<text, `text`>> | varchar | 2,147,483,647
| <<binary, `binary`>> | varbinary | 2,147,483,647
| <<date, `date`>> | timestamp | 24
| <<ip, `ip`>> | varchar | 39
| <<null-value, `null`>> | null | NULL | 0
| <<boolean, `boolean`>> | boolean | BOOLEAN | 1
| <<number, `byte`>> | byte | TINYINT | 3
| <<number, `short`>> | short | SMALLINT | 5
| <<number, `integer`>> | integer | INTEGER | 10
| <<number, `long`>> | long | BIGINT | 19
| <<number, `double`>> | double | DOUBLE | 15
| <<number, `float`>> | float | REAL | 7
| <<number, `half_float`>> | half_float | FLOAT | 16
| <<number, `scaled_float`>> | scaled_float | FLOAT | 19
| <<keyword, `keyword`>> | keyword | VARCHAR | based on <<ignore-above>>
| <<text, `text`>> | text | VARCHAR | 2,147,483,647
| <<binary, `binary`>> | binary | VARBINARY | 2,147,483,647
| <<date, `date`>> | datetime | TIMESTAMP | 24
| <<ip, `ip`>> | ip | VARCHAR | 39
3+h| Complex types
4+h| Complex types
| <<object, `object`>> | struct | 0
| <<nested, `nested`>> | struct | 0
| <<object, `object`>> | object | STRUCT | 0
| <<nested, `nested`>> | nested | STRUCT | 0
3+h| Unsupported types
4+h| Unsupported types
| _types not mentioned above_ | unsupported | 0
| _types not mentioned above_ | unsupported | OTHER | 0
|===