DROP MASK RULE 语法用于删除数据脱敏规则。
DropMaskRule ::=
'DROP' 'MASK' 'RULE' ifExists? ruleName (',' ruleName)*
ifExists ::=
'IF' 'EXISTS'
ruleName ::=
identifier
ifExists 子句用于避免 Mask rule not exists 错误。DROP MASK RULE t_mask, t_mask_1;
ifExists 子句删除数据脱敏规则DROP MASK RULE IF EXISTS t_mask, t_mask_1;
DROP, MASK, RULE