第一关
select concat(substring(attr, 8, 2), substring(attr, 3, 2)) from level1;
H
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RE: 叮~您有一封国庆SQL闯关邀请函,请查收posted in 活动
Latest posts made by hola
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RE: 叮~您有一封国庆SQL闯关邀请函,请查收posted in 活动
第一关
select concat(substring(attr, 8, 2), substring(attr, 3, 2)) from level1;