ERROR:updateordeleteontable"tbl_foreign_refd" violatesforeignkeyconstraint"fk_tbl_foreign_a_b"ontable"tbl_foreign" DETAIL:Key(a, b)=(1,1)isstill referencedfromtable"tbl_foreign". test=#updatetbl_foreign_refdseta=3wherea=1andb=1; ERROR:updateordeleteontable"tbl_foreign_refd" violatesforeig...
insert or update on table "orders" violates foreign key constraint "orders_product_no_fkey" 删除一个被引用的产品,如下: delete from products where product_no = 1; 提示错误如下: update or delete on table "products" violates foreign key constraint "orders_product_no_fkey" on table "orders" 先...
Because of the ON DELETE NO ACTION, PostgreSQL issues a constraint violation because the referencing rows of the customer id 1 still exist in the contacts table: ERROR: update or delete on table "customers" violates foreign key constraint "fk_customer" on table "contacts" DETAIL: Key (customer...
postgres=# alter table t2 validate constraint t2_b_fkey; ERROR: insert or update on table "t2" violates foreign key constraint "t2_b_fkey" DETAIL: Key (b)=(5) is not present in table "t1". postgres=# 本文来自博客园,作者:abce,转载请注明原文链接:https://www.cnblogs.com/abclife/p...
当脚本运行时,突然报错了,错误信息显示:“insert or update on table ‘orders’ violates foreign key constraint ‘orders_customer_id_fkey’”。这就好比城堡里突然来了一群不遵守规矩的陌生人,“规矩警察”坚决不让他们进入。 开发人员当时就懵了,怎么会这样呢?这些订单数据看起来都挺正常的呀。仔细检查后发现...
通常一个表中的 FOREIGN KEY 指向另一个表中的 UNIQUE KEY(唯一约束的键),即维护了两个相关表之间的引用完整性。 实例 下面实例创建了一张 COMPANY6 表,并添加了5个字段: CREATE TABLE COMPANY6( ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, ...
ERROR: insert or update on table "tbl_studentmarks" violates foreign key constraint "fk_tbl_studentmarks_studid" DETAIL: Key (studid)=(6) is not present in table "tbl_students". *** Error *** Disable all hidden triggers of a Student Mark table: 1 ALTER TABLE t...
A FOREIGN KEY constraint contain the value in a column or combination of columns which must be appearing in the same column or group of columns in another table.
对表执行Insert或update操作违反了外键约束EN外键约束 foreign key 外键约束的要求： 父表和字表必须使用...
ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL ); FOREIGN KEY 约束 FOREIGN KEY 即外键约束,指定列(或一组列)中的值必须匹配另一个表的某一行中出现的值。 通常一个表中的 FOREIGN KEY 指向另一个表中的 UNIQUE KEY(唯一约束的键),即维护了...