MyBatis一条语句（PostgresSql）实现批量新增更新操作ON CONFLICT

MyBatis一条语句（PostgresSql）实现批量新增更新操作ON CONFLICT

ON CONFLICT(“主键”) 可实现一条语句实现批量新增更新操，但是切记统一批次更新主键不能重复

语句示例

INSERT INTO "user" ("user_id", "username")
VALUES
	(35, '李雷'),
	(36, '韩梅梅') 
ON CONFLICT ("user_id")
DO UPDATE SET 
    "user_id" = EXCLUDED."user_id",
	"username" = EXCLUDED."username"

user_id为主键

MyBatis xml实现

<insert id="userBatchInsertOrUpdate" parameterType="java.util.List">
	INSERT INTO "user" ("user_id", "username") VALUES
	<foreach collection="list" item="item" separator=",">
		(#{item.user_id}, #{item.username})
	foreach>
	ON CONFLICT ("user_id")
	DO UPDATE SET 
		"user_id" = EXCLUDED."user_id",
		"username" = EXCLUDED."username"
insert>