This affects only storage engines that use only table-level The UPDATE is delayed until no other clients are reading from If you use the LOW_PRIORITY keyword, execution of.The UPDATE statement supports the following modifiers: SELECT privilege for any columns that are read but You need the UPDATE privilege only for columns referenced inĪn UPDATE that are actually updated. If the SIMULTANEOUS_ASSIGNMENT sql_mode (available from MariaDB 10.3.5) is set, UPDATE statements evaluate all assignments simultaneously. Table_references and where_condition are asįor single-table updates, assignments are evaluated in left-to-right order, while for multi-table updates, there is no guarantee of a particular order. Where_condition is an expression that evaluates to true for An UPDATE can also reference tables which are located in different databases see Identifier Qualifiers for the syntax. This restriction was lifted in MariaDB 10.3.2 and both clauses can be used with multiple-table updates. Table named in table_references that satisfy the conditions. Until MariaDB 10.3.2, for the multiple-table syntax, UPDATE updates rows in each Places a limit on the number of rows that can be updated. If the ORDER BY clause is specified, the rows are WHERE clause, if given, specifies the conditions that identify Each value can be given as an expression, or the keywordĭEFAULT to set a column explicitly to its default value. SET clause indicates which columns to modify and the values
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