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https://dev.mysql.com/doc/refman/5.7/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 12.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/5.7/en/version-tokens-reference.html
| +------------------------------------+ An argument of NULL is treated as an empty string, which has no effect on the token list. (It is not an error to delete nonexisting tokens.) To clear the token list entirely without knowing which tokens are ...version_tokens_delete(name_list) Deletes tokens from the server's list of version tokens using the name_list argument and returns a binary string that indicates the outcome of the ... The following discussion serves as a ...
https://dev.mysql.com/doc/refman/5.7/en/outer-join-simplification.html
Instead, MySQL converts the query to a query with no outer join operation if the WHERE condition is null-rejected. (That is, it converts the outer join to an inner join.) A condition is said to be null-rejected for an outer join operation if it ...
https://dev.mysql.com/doc/refman/5.7/en/json-attribute-functions.html
Returns NULL if any argument is NULL or the path argument does not identify a value in the document. The functions in this section return attributes of JSON values. An error occurs if the argument is not a valid JSON document. An empty array, empty ...
https://dev.mysql.com/doc/refman/5.7/en/ldap-pluggable-authentication.html
(To associate an LDAP user DN with a MySQL account, include a BY clause that specifies an authentication string in the CREATE USER statement that creates the account.) If the MySQL account names no LDAP user DN, LDAP authentication uses the user ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-conflict-resolution.html
The name of this table is that of the table for which conflict resolution is to be applied, with the string $EX appended. (An example that uses NDB$OLD() with an exceptions table is shown later in this section.) Additional columns may optionally be ... Requirements Source Column Control Conflict Resolution Control Conflict Resolution Functions Conflict Resolution Exceptions Table Conflict Detection Status Variables Examples When using a replication setup involving multiple sources (including circular replication), it is possible that different sources may try to update the same row on the replica with different ...
https://dev.mysql.com/doc/refman/5.7/en/gis-wkt-functions.html
LineFromText(wkt [, srid]), LineStringFromText(wkt [, srid]) ST_LineFromText(), ST_LineStringFromText(), LineFromText(), and LineStringFromText() are synonyms. LineFromText() and LineStringFromText() are deprecated; expect them to be removed in a ...
https://dev.mysql.com/doc/refman/5.7/en/fulltext-natural-language.html
By default or with the IN NATURAL LANGUAGE MODE modifier, the MATCH() function performs a natural language search for a string against a text collection. For each row in the table, MATCH() returns a relevance value; that is, a similarity measure ...
https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html
ABS(X) Returns the absolute value of X, or NULL if X is NULL. Returns NULL if X is not in the range -1 to 1. mysql> SELECT ACOS(1); -> 0 mysql> SELECT ACOS(1.0001); -> NULL mysql> SELECT ACOS(0); -> 1.5707963267949 ASIN(X) Returns the arc sine of X, ...An implication of this is that ABS(-9223372036854775808) produces an error because the result cannot be stored in a signed BIGINT ...
https://dev.mysql.com/doc/refman/5.7/en/json-creation-functions.html
mysql> SELECT JSON_ARRAY(1, "abc", NULL, TRUE, CURTIME()); +---------------------------------------------+ | JSON_ARRAY(1, "abc", NULL, TRUE, CURTIME()) | +---------------------------------------------+ | [1, "abc", null, true, "11:30:24.000000"] | ... The functions listed in this section compose JSON values from component ...