28.3.6 The INFORMATION_SCHEMA COLLATIONS Table

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MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4

28.3.6 The INFORMATION_SCHEMA COLLATIONS Table

The COLLATIONS table provides information about collations for each character set.

The COLLATIONS table has these columns:

• COLLATION_NAME

The collation name. - CHARACTER_SET_NAME

The name of the character set with which the collation is associated. - ID

The collation ID. - IS_DEFAULT

Whether the collation is the default for its character set. - IS_COMPILED

Whether the character set is compiled into the server. - SORTLEN

This is related to the amount of memory required to sort strings expressed in the character set. - PAD_ATTRIBUTE

The collation pad attribute, either NO PAD or PAD SPACE. This attribute affects whether trailing spaces are significant in string comparisons; see Trailing Space Handling in Comparisons.

Notes

Collation information is also available from the SHOW COLLATION statement. See Section 15.7.7.5, “SHOW COLLATION Statement”. The following statements are equivalent:

SELECT COLLATION_NAME FROM INFORMATION_SCHEMA.COLLATIONS
  [WHERE COLLATION_NAME LIKE 'wild']

SHOW COLLATION
  [LIKE 'wild']