当列为假时如何添加复合约束

Question

我都尝试过]

1）

ALTER TABLE artikal_normativi
  ADD CONSTRAINT "artikal_normativi_UIX" 
  UNIQUE(artikal_proizvod_id, artikal_materijal_id) 
WHERE deleted = false;
2）

CREATE UNIQUE INDEX artikal_normativi_UIX
  ON artikal_normativi
  USING btree(artikal_proizvod_id, artikal_materijal_id) 
  WHERE deleted = false;

ADD CONSTRAINT artikal_normativi_uix_constraint UNIQUE USING INDEX artikal_normativi_uix;
都给我错误。

第一条语句的错误：

ERROR:  syntax error at or near "WHERE"
LINE 2: ...UNIQUE(artikal_proizvod_id, artikal_materijal_id) WHERE dele...
                                                             ^
********** Error **********

ERROR: syntax error at or near "WHERE"
和第二条语句：

ERROR:  syntax error at or near "USING"
LINE 1: ...i ADD CONSTRAINT artikal_normativi_uix_constraint USING INDE...
                                                             ^

********** Error **********

ERROR: syntax error at or near "USING"
SQL state: 42601
Character: 79

我都尝试过1）ALTER TABLE artikal_normativi添加约束“ artikal_normativi_UIX” UNIQUE（artikal_proizvod_id，artikal_materijal_id）在哪里删除=假； 2）创建唯一索引...

Answer 1

您不能具有带有局部索引的UNIQUE约束。