The DROP MASK RULE
syntax is used to drop existing mask rule.
DropEncryptRule ::=
'DROP' 'MASK' 'RULE' ifExists? ruleName (',' ruleName)*
ifExists ::=
'IF' 'EXISTS'
ruleName ::=
identifier
ifExists
clause used for avoid Mask rule not exists
error.DROP MASK RULE t_mask, t_mask_1;
ifExists
clauseDROP MASK RULE IF EXISTS t_mask, t_mask_1;
DROP
, MASK
, RULE