st_lookup_field_values Struct Reference

List of all members.

Public Attributes
LEX_STRING	db_value
LEX_STRING	table_value
bool	wild_db_value
bool	wild_table_value

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Detailed Description

Condition pushdown used for INFORMATION_SCHEMA / SHOW queries. This structure is to implement an optimization when accessing data dictionary data in the INFORMATION_SCHEMA or SHOW commands. When the query contain a TABLE_SCHEMA or TABLE_NAME clause, narrow the search for data based on the constraints given.

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Member Data Documentation

LEX_STRING st_lookup_field_values::db_value

Value of a TABLE_SCHEMA clause. Note that this value length may exceed NAME_LEN.

See also:

wild_db_value

LEX_STRING st_lookup_field_values::table_value

Value of a TABLE_NAME clause. Note that this value length may exceed NAME_LEN.

See also:

wild_table_value

bool st_lookup_field_values::wild_db_value

True when db_value is a LIKE clause, false when db_value is an '=' clause.

bool st_lookup_field_values::wild_table_value

True when table_value is a LIKE clause, false when table_value is an '=' clause.

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The documentation for this struct was generated from the following file:

• sql_show.cc