SelectQuery_sqlite::forUpdate
public function SelectQuery_sqlite::forUpdate
public SelectQuery_sqlite::forUpdate($set = TRUE)
Add FOR UPDATE to the query.
FOR UPDATE prevents the rows retrieved by the SELECT statement from being modified or deleted by other transactions until the current transaction ends. Other transactions that attempt UPDATE, DELETE, or SELECT FOR UPDATE of these rows will be blocked until the current transaction ends.
Parameters
$set: IF TRUE, FOR UPDATE will be added to the query, if FALSE then it won't.
Return value
QueryConditionInterface The called object.
Overrides SelectQuery::forUpdate
File
- includes/database/sqlite/select.inc, line 17
- Select builder for SQLite embedded database engine.
Class
- SelectQuery_sqlite
- SQLite specific query builder for SELECT statements.
Code
public function forUpdate($set = TRUE) { // SQLite does not support FOR UPDATE so nothing to do. return $this; }
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https://api.drupal.org/api/drupal/includes!database!sqlite!select.inc/function/SelectQuery_sqlite::forUpdate/7.x