我因异常而失去理智,我需要你的帮助。
我已经将查询写入映射器,该映射器根据两个条件从表中检索记录:列表中的“位置”和另一个列表中的“技能”。
所以,基本上,如果用户选择了不止一种技能来查找,查询将恢复所有具有这些技能的记录...
如此简单但又如此扭曲,因为我使用了两个 foreach...一个有效而另一个无效...
这是查询:
<select id="selectAllByFilter" resultMap="BaseResultMap">
select distinct
<include refid="Base_Column_List" /><include refid="Join_Column_List" />
from "ANAG_REQS" A JOIN "ANAG_REQS_RISORSE" R ON A."ID_REQS_RDA"=R."ID_REQS" LEFT JOIN "SEC_USER" U ON R."ID_USER"=U."ID"
LEFT JOIN "USER_LOCATION" S ON S."ID_REQS_USER"= R."ID_REQS"
LEFT JOIN "USER_SKILL" RS ON RS."ID_REQS_USER"= R."ID_REQS"
LEFT JOIN "USER_CUSTOMER" RC ON RC."ID_REQS"= R."ID_REQS"
WHERE 1=1
<if test="filter.idREQS != null">
AND A."ID_REQS_RDA" = #{filter.idREQS,jdbcType=INTEGER}
</if>
<if test="filter.states != null and filter.states.size()>0 and not statesuspended">
AND A."state_RDA" IN
<foreach item="item" collection="filter.states" index="index"
open="(" separator="," close=")">
#{item}
</foreach>
AND R."state" != 'suspended'
</if>
<if test="filter.states != null and filter.states.size()>0 and statesuspended">
AND (A."state_RDA" IN
<foreach item="item" collection="filter.states" index="index"
open="(" separator="," close=")">
#{item}
</foreach>
OR A."state_RDA" = 'published' AND R."state" = 'suspended')
</if>
<if test="filter.states.isEmpty() and statesuspended">
AND A."state_RDA" = 'published' AND R."state" = 'suspended'
</if>
<if test="filter.dataREQSDa != null">
AND A."DATA_REQS_RDA" >= #{filter.dataREQSDa,jdbcType=DATE}
</if>
<if test="filter.dataREQSA != null">
AND A."DATA_REQS_RDA" <= #{filter.dataREQSA,jdbcType=DATE}
</if>
<if test="filter.pm != null and filter.pm != ''">
<bind name="pattern1" value="'%' + filter.pm + '%'" />
AND lower(U."USER_NAME") LIKE lower(#{pattern1})
</if>
<if test="filter.CUSTOMER != null">
AND RC."ID_CUSTOMER" = #{filter.CUSTOMER,jdbcType=INTEGER}
</if>
<if test="filter.locationselected != null and filter.locationselected.size()>0">
AND S."ID_LOCATION" IN
<foreach item="item" collection="filter.locationselected" index="index"
open="(" separator="," close=")">
#{item}
</foreach>
</if>
<if test="filter.skills != null and filter.skills.size()>0">
AND RS."ID_SKILL" IN
<foreach item="item" collection="filter.skills" index="index"
open="(" separator="," close=")">
#{item}
</foreach>
</if>
</select>
在最新的 foreach (filter.skills) 上抛出异常。
问题是前面的 foreach (filter.locationSelected) 工作得很好。唯一的区别是 skills 是一个整数列表,而 locationSelected 是一个字符串列表。但这不应该是原因,因为我什至尝试使用字符串列表,但问题仍然存在......
RS.ID_SKILL 是一个 int4,因此,只要我的逻辑正常(如果我不发疯的话),我基本上是在检查 int 是否在整数列表中......... ..
但我仍然收到 BadSQLGrammarException 声明:运算符不存在:整数 = 字符变化 提示:没有运算符匹配给定的名称和参数类型。您可能需要添加显式类型转换。
我做错了什么?!
救我!
编辑:S."ID_LOCATION"是一个 varchar,所以我正在检查它的内容是否在字符串列表中...基于此唯一合乎逻辑的结论是 mybatis 的 foreach 不适用于整数列表.....我不知道.....
最佳答案
您是否尝试过通过以下方式修改查询: 替换
AND RS."ID_SKILL" IN
通过
AND cast(RS."ID_SKILL" as character varying) IN
关于java - 运算符不存在 : integer = character varying,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51241430/