ELECT *
FROM customer
WHERE (cust_num < 'sy')
union
ELECT *
FROM customer
WHERE (cust_num = 'syai')
union
ELECT *
FROM customer
WHERE (cust_num = 'syaj')
FROM customer
WHERE (cust_num < 'sy')
union
ELECT *
FROM customer
WHERE (cust_num = 'syai')
union
ELECT *
FROM customer
WHERE (cust_num = 'syaj')
解决方案 »
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