对数据库libinfo中数据表reader施加表级读锁的语句是() A: LOCKreader READ; B: LOCKTABLESreader WRITE; C: LOCKTABLESreader READ; D: LOCKreader WRITE;
对数据库libinfo中数据表reader施加表级读锁的语句是() A: LOCKreader READ; B: LOCKTABLESreader WRITE; C: LOCKTABLESreader READ; D: LOCKreader WRITE;
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