如何通过Postgresql查询在字符串列表中搜索枚举? [英] How to search an enum in list of strings by postgresql query?

问题描述

考虑一条SQL语句:

select * from table where status in <statuses>

状态为枚举:

CREATE TYPE statusType AS ENUM (
  'enum1',
  'enum2';

在Java中，我有一个以字符串表示形式的枚举列表:

In Java I have a list of the enums in string representation:

List<String> list = new ArrayList<>();
list.add("enum1");
list.add("enum2");

然后我尝试使用SqlStatement构建并执行查询:

I then try to build and execute the query using SqlStatement:

handle.createQuery("select * from table where status in <statuses>")
                    .bindList("statuses", statuses)
                    .map(Mapper.instance)
                    .list());

我一直收到以下错误:

org.jdbi.v3.core.statement.UnableToExecuteStatementException: org.postgresql.util.PSQLException: ERROR: operator does not exist: status = character varying
  Hint: No operator matches the given name and argument types. You might need to add explicit type casts.

我尝试用CAST(enum1作为statusType)或enum1 :: statusType包装每个列表项，但是没有运气.

I've tried wrapping each list item with CAST(enum1 as statusType) or enum1::statusType but no luck.

感谢您的帮助.

推荐答案

您可以将枚举转换为文本

You can cast the enum to text

handle.createQuery("select * from table where status::text in <statuses>")
                .bindList("statuses", statuses)
                .map(Mapper.instance)
                .list());

这篇关于如何通过Postgresql查询在字符串列表中搜索枚举?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！