PostgreSQL的upsert实例操作(insert

DROP TABLE IF EXISTS "goods";
CREATE TABLE "goods" (
 "store_cd" int4 NOT NULL,
 "good_cd" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
 "name" varchar(255) COLLATE "pg_catalog"."default"
);
 
INSERT INTO "goods" VALUES (101, '1', '张三');
INSERT INTO "goods" VALUES (102, '2', '李四');
INSERT INTO "goods" VALUES (103, '3', '王五');
 
ALTER TABLE "goods" ADD CONSTRAINT "pr_cd_key" PRIMARY KEY ("store_cd", "good_cd");

INSERT INTO GOODS VALUES ( 104, '4', '赵六' ) 
ON CONFLICT ON CONSTRAINT pr_key_cd DO
UPDATE 
 SET NAME = '更新' 
WHERE
 GOODS.STORE_CD = '104' 
 AND GOODS.GOOD_CD = '4'

INSERT INTO GOODS VALUES ( 104, '4', '赵六' ) 
ON CONFLICT ( STORE_CD, GOOD_CD ) DO
UPDATE 
 SET NAME = '更新' 
WHERE
 GOODS.STORE_CD = '104' 
 AND GOODS.GOOD_CD = '4'

WITH TABLE1 AS ( UPDATE GOODS SET NAME = '更新' WHERE STORE_CD = '104' AND GOOD_CD = '4' RETURNING * ) 
INSERT INTO GOODS SELECT 104, '4', '赵六' 
WHERE NOT EXISTS ( SELECT 1 FROM TABLE1 WHERE STORE_CD = '104' AND GOOD_CD = '4' )

[ WITH [ RECURSIVE ] with_query [, ...] ]
INSERT INTO table_name [ AS alias ] [ ( column_name [, ...] ) ]
  [ OVERRIDING { SYSTEM | USER} VALUE ]
  { DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) [, ...] | query }
  [ ON CONFLICT [ conflict_target ] conflict_action ]
  [ RETURNING * | output_expression [ [ AS ] output_name ] [, ...] ]
where conflict_target can be one of:
  ( { index_column_name | ( index_expression ) } [ COLLATE collation ] [ opclass ] [, ...] ) [ WHERE index_predicate ]
  ON CONSTRAINT constraint_name
and conflict_action is one of:
  DO NOTHING
  DO UPDATE SET { column_name = { expression | DEFAULT } |
          ( column_name [, ...] ) = [ ROW ] ( { expression | DEFAULT } [, ...] ) |
          ( column_name [, ...] ) = ( sub-SELECT )
         } [, ...]
       [ WHERE condition ]

CREATE TABLE "test"."upsert_test" (
 "id" int4 NOT NULL,
 "name" varchar(255) COLLATE "pg_catalog"."default"
)
;

INSERT INTO test.upsert_test(id, "name")
  VALUES(1, 'm'),(2, 'n'),(4, 'c')
  ON conflict(id) DO UPDATE
  SET "name" = excluded.name;

INSERT INTO test.upsert_test(id, "name")
VALUES(1, 'm'),(2, 'n'),(4, 'c')
ON conflict(id) DO NOTHING;