[英]Adding constraint on an existing table with CHECK
Can anyone have a look at my SQL statement and tell me what is wrong with it. 谁能看看我的SQL语句并告诉我它有什么问题。 I keep getting error when I tried to add a new constraint on an existing table.
尝试在现有表上添加新约束时,我总是收到错误消息。
Error report:
SQL Error: ORA-01735: invalid ALTER TABLE option
01735. 00000 - "invalid ALTER TABLE option"
*Cause:
*Action:
You need parentheses around the entire condition for check
: 您需要在整个条件周围加上括号以进行
check
:
alter table seat
add constraint check_seats
CHECK ((BLOCKNO = 'FRONT' AND ROWNO NOT LIKE '%[^A-J]%' AND SEATNO <=40) OR
(BLOCKNO = 'MIDDLE' AND ROWNO NOT LIKE '%[^A-L]%' AND SEATNO <=50) OR
(BLOCKNO = 'BACK' AND ROWNO NOT LIKE '%[^A-N]%' AND SEATNO <=60)
);
Add one more parenthesis for the check constraint. 为检查约束再添加一个括号。
CHECK ((BLOCKNO = 'FRONT' AND ROWNO NOT LIKE '%[^A-J]%' AND SEATNO <=40) OR
(BLOCKNO = 'MIDDLE' AND ROWNO NOT LIKE '%[^A-L]%' AND SEATNO <=50) OR
(BLOCKNO = 'BACK' AND ROWNO NOT LIKE '%[^A-N]%' AND SEATNO <=60)
);
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