[英]How to compare two table value using mysql query and matched value then print true false using alise filled
一张表是 tbl_block
第二个表是 tbl_late_students
并输出如下：
在下面尝试使用left join和CASE WHEN
select
a.enrollment_no,
case when b.enrollment_no is null then 'false' else 'true' end as result
from tbl_block a left join tbl_late_students b
on a.enrollment_no=b.enrollment_no
MySQL-如何用一个查询更新两个表，其中表2的值为true？
[英]MySQL - How to update two tables with one query where table 2 value is true?
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[英]How to check boolean field of mysql table and convertion of 0 or 1 value to true/false in php
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