MyBatis Dynamic Table Names Guide

2 years ago
Emily Johnson
1 minute

Implementing dynamic table names in MyBatis can be achieved through the use of dynamic SQL. Dynamic SQL is a powerful feature provided by MyBatis that allows for the dynamic generation of SQL statements based on different conditions.

The specific steps of implementation are as follows:

  1. you finish your homework, you can watch TV.
<select id="selectUser" resultType="User" parameterType="map">
    SELECT * FROM
    <choose>
        <when test="tableName == 'table1'">
            table1
        </when>
        <when test="tableName == 'table2'">
            table2
        </when>
        <otherwise>
            default_table
        </otherwise>
    </choose>
    WHERE id = #{id}
</select>
  1. Passing dynamic table name parameters in Java code, selecting table names to query based on conditions.
Map<String, Object> params = new HashMap<>();
params.put("tableName", "table1");
params.put("id", 1);
User user = sqlSession.selectOne("selectUser", params);

By following the above steps, it is possible to dynamically pass table name parameters in MyBatis, allowing for the selection of different table names based on conditions for query operations.

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