db_like($string) Escapes characters that work as wildcard characters in a LIKE pattern. The
db_ignore_replica() Sets a session variable specifying the lag time for ignoring a replica server (A replica
db_field_names($fields) Returns an array of field names from an array of key/index column specifiers.
db_add_unique_key($table, $name, $fields) Adds a unique key. Parameters
Core systems for the database layer. Classes required for basic functioning of the database system should be placed in this file. All utility
db_or() Returns a new DatabaseCondition, set to "OR" all conditions together. Return
db_index_exists($table, $name) Checks if an index exists in the given table. Parameters
db_condition($conjunction) Returns a new DatabaseCondition, set to the specified conjunction.
db_close(array $options = array()) Closes the active database connection. Parameters
db_drop_primary_key($table) Drops the primary key of a database table. Parameters
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