單表更新:
update table1 set columns1=1,cloumns2=2 where condition1 and condition2
多表關聯更新:
# 多表更新
update table1 t1,table2 t2 set t1.columns1=1,t2.columns1=1 where t1.id=t2.id and condition1 and condition2
# 左聯更新
update table1 t1 left join table2 t2 on t1.id = t2.id set t1.columns=1,t2.columns=1 where condition1 and condition2
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