the dynamic sql of mybatis is as follows in the xml file:
count( DISTINCT item.RECORD_ID ) AS borrowNum -- ()
</if> as above, I want to judge whether the eachBook field is 0 or 1 . May I ask how to write it? I didn"t say it even after reading the official mybatis document.
those who want to know will let me know, thank you.
MyBatis is parsed using OGNL expressions, so to determine that a variable is equal to a certain value, use the following:
<if test='optionType == "1" '>
</if>or
<if test="optionType == '1'.toString() ">
</if>or
<if test="optionType == "1" ">
</if>
Why not use case when statement blocks
select sno,sname,age,saddress,
(case sex
when '0' then ''
when '1' then ''
else '' end) as
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