sql里,where a in (select .) and b in (select .)这种表示合法吗?
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![sql里,where a in (select .) and b in (select .)这种表示合法吗?](/uploads/image/z/14892165-45-5.jpg?t=sql%E9%87%8C%2Cwhere+a+in+%28select+.%29+and+b+in+%28select+.%29%E8%BF%99%E7%A7%8D%E8%A1%A8%E7%A4%BA%E5%90%88%E6%B3%95%E5%90%97%3F)
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sql里,where a in (select .) and b in (select .)这种表示合法吗?
sql里,where a in (select .) and b in (select .)这种表示合法吗?
sql里,where a in (select .) and b in (select .)这种表示合法吗?
写法合法的,并且经常这样用