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In a few previous PR's we restructured the ES|QL docs to make it possible to generate them dynamically. This PR just moves a few files around to make the query languages docs easier to work with, and a little more organized like the ES|QL docs. A bit part of this was setting up redirects to the new locations, so other repo's could correctly link to the elasticsearch docs.
246 lines
5.6 KiB
Markdown
246 lines
5.6 KiB
Markdown
---
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mapped_pages:
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- https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-syntax-show-functions.html
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---
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# SHOW FUNCTIONS [sql-syntax-show-functions]
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```sql
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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**: 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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```sql
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SHOW FUNCTIONS;
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name | type
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-----------------+---------------
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AVG |AGGREGATE
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COUNT |AGGREGATE
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FIRST |AGGREGATE
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FIRST_VALUE |AGGREGATE
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LAST |AGGREGATE
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LAST_VALUE |AGGREGATE
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MAX |AGGREGATE
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MIN |AGGREGATE
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SUM |AGGREGATE
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KURTOSIS |AGGREGATE
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MAD |AGGREGATE
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PERCENTILE |AGGREGATE
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PERCENTILE_RANK |AGGREGATE
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SKEWNESS |AGGREGATE
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STDDEV_POP |AGGREGATE
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STDDEV_SAMP |AGGREGATE
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SUM_OF_SQUARES |AGGREGATE
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VAR_POP |AGGREGATE
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VAR_SAMP |AGGREGATE
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HISTOGRAM |GROUPING
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CASE |CONDITIONAL
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COALESCE |CONDITIONAL
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GREATEST |CONDITIONAL
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IFNULL |CONDITIONAL
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IIF |CONDITIONAL
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ISNULL |CONDITIONAL
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LEAST |CONDITIONAL
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NULLIF |CONDITIONAL
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NVL |CONDITIONAL
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CURDATE |SCALAR
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CURRENT_DATE |SCALAR
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CURRENT_TIME |SCALAR
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CURRENT_TIMESTAMP|SCALAR
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CURTIME |SCALAR
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DATEADD |SCALAR
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DATEDIFF |SCALAR
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DATEPART |SCALAR
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DATETIME_FORMAT |SCALAR
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DATETIME_PARSE |SCALAR
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DATETRUNC |SCALAR
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DATE_ADD |SCALAR
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DATE_DIFF |SCALAR
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DATE_FORMAT |SCALAR
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DATE_PARSE |SCALAR
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DATE_PART |SCALAR
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DATE_TRUNC |SCALAR
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DAY |SCALAR
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DAYNAME |SCALAR
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DAYOFMONTH |SCALAR
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DAYOFWEEK |SCALAR
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DAYOFYEAR |SCALAR
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DAY_NAME |SCALAR
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DAY_OF_MONTH |SCALAR
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DAY_OF_WEEK |SCALAR
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DAY_OF_YEAR |SCALAR
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DOM |SCALAR
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DOW |SCALAR
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DOY |SCALAR
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FORMAT |SCALAR
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HOUR |SCALAR
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HOUR_OF_DAY |SCALAR
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IDOW |SCALAR
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ISODAYOFWEEK |SCALAR
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ISODOW |SCALAR
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ISOWEEK |SCALAR
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ISOWEEKOFYEAR |SCALAR
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ISO_DAY_OF_WEEK |SCALAR
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ISO_WEEK_OF_YEAR |SCALAR
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IW |SCALAR
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IWOY |SCALAR
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MINUTE |SCALAR
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MINUTE_OF_DAY |SCALAR
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MINUTE_OF_HOUR |SCALAR
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MONTH |SCALAR
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MONTHNAME |SCALAR
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MONTH_NAME |SCALAR
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MONTH_OF_YEAR |SCALAR
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NOW |SCALAR
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QUARTER |SCALAR
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SECOND |SCALAR
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SECOND_OF_MINUTE |SCALAR
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TIMESTAMPADD |SCALAR
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TIMESTAMPDIFF |SCALAR
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TIMESTAMP_ADD |SCALAR
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TIMESTAMP_DIFF |SCALAR
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TIME_PARSE |SCALAR
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TODAY |SCALAR
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TO_CHAR |SCALAR
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WEEK |SCALAR
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WEEK_OF_YEAR |SCALAR
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YEAR |SCALAR
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ABS |SCALAR
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ACOS |SCALAR
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ASIN |SCALAR
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ATAN |SCALAR
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ATAN2 |SCALAR
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CBRT |SCALAR
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CEIL |SCALAR
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CEILING |SCALAR
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COS |SCALAR
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COSH |SCALAR
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COT |SCALAR
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DEGREES |SCALAR
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E |SCALAR
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EXP |SCALAR
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EXPM1 |SCALAR
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FLOOR |SCALAR
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LOG |SCALAR
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LOG10 |SCALAR
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MOD |SCALAR
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PI |SCALAR
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POWER |SCALAR
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RADIANS |SCALAR
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RAND |SCALAR
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RANDOM |SCALAR
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ROUND |SCALAR
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SIGN |SCALAR
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SIGNUM |SCALAR
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SIN |SCALAR
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SINH |SCALAR
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SQRT |SCALAR
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TAN |SCALAR
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TRUNC |SCALAR
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TRUNCATE |SCALAR
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ASCII |SCALAR
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BIT_LENGTH |SCALAR
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CHAR |SCALAR
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CHARACTER_LENGTH |SCALAR
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CHAR_LENGTH |SCALAR
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CONCAT |SCALAR
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INSERT |SCALAR
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LCASE |SCALAR
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LEFT |SCALAR
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LENGTH |SCALAR
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LOCATE |SCALAR
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LTRIM |SCALAR
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OCTET_LENGTH |SCALAR
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POSITION |SCALAR
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REPEAT |SCALAR
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REPLACE |SCALAR
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RIGHT |SCALAR
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RTRIM |SCALAR
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SPACE |SCALAR
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STARTS_WITH |SCALAR
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SUBSTRING |SCALAR
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TRIM |SCALAR
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UCASE |SCALAR
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CAST |SCALAR
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CONVERT |SCALAR
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DATABASE |SCALAR
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USER |SCALAR
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ST_ASTEXT |SCALAR
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ST_ASWKT |SCALAR
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ST_DISTANCE |SCALAR
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ST_GEOMETRYTYPE |SCALAR
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ST_GEOMFROMTEXT |SCALAR
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ST_WKTTOSQL |SCALAR
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ST_X |SCALAR
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ST_Y |SCALAR
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ST_Z |SCALAR
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SCORE |SCORE
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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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```sql
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SHOW FUNCTIONS LIKE 'ABS';
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name | type
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---------------+---------------
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ABS |SCALAR
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```
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A wildcard for exactly one character:
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```sql
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SHOW FUNCTIONS LIKE 'A__';
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name | type
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---------------+---------------
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AVG |AGGREGATE
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ABS |SCALAR
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```
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A wildcard matching zero or more characters:
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```sql
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SHOW FUNCTIONS LIKE 'A%';
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name | type
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---------------+---------------
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AVG |AGGREGATE
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ABS |SCALAR
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ACOS |SCALAR
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ASIN |SCALAR
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ATAN |SCALAR
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ATAN2 |SCALAR
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ASCII |SCALAR
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```
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Or of course, a variation of the above:
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```sql
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SHOW FUNCTIONS LIKE '%DAY%';
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name | type
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---------------+---------------
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DAY |SCALAR
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DAYNAME |SCALAR
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DAYOFMONTH |SCALAR
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DAYOFWEEK |SCALAR
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DAYOFYEAR |SCALAR
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DAY_NAME |SCALAR
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DAY_OF_MONTH |SCALAR
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DAY_OF_WEEK |SCALAR
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DAY_OF_YEAR |SCALAR
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HOUR_OF_DAY |SCALAR
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ISODAYOFWEEK |SCALAR
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ISO_DAY_OF_WEEK|SCALAR
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MINUTE_OF_DAY |SCALAR
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TODAY |SCALAR
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```
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