ERROR: permission denied: "RI_ConstraintTrigger_c_75235" is a system trigger postgres=> 那作为普通用户,该如何禁用触发器呢? 1 postgres=> alter table t4 disable trigger user; 具体语法为: 1 DISABLE TRIGGER [ trigger_name | ALL | USER ] 回到t1、t2表。 1 2 3 4 5 6 7 8 9 10 11...
为了增强sql文的可读性,可以用到Row关键字。如:ROW(’fuzzy dice’, 42, 1.99)作为某个复合类型的值插入table。 如: test=# create type inventory_item as (name text,sid int); CREATE TYPE test=# create table on_hand(item inventory_item); CREATE TABLE test=# insert into on_hand values(row('...
mysql> insert into t_tudent values(112,'爱国的吴京',6); ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`test_wl`.`t_tudent`, CONSTRAINT `t_tudent_ibfk_1` FOREIGN KEY (`t_class`) REFERENCES `t_class` (`class_num`)) 1. 2. 3. 4. 5...
ALTER TABLE distributors ADD CONSTRAINT zipchk CHECK (char_length(zipcode) = 5); 删除一个表和它的所有子表的监查约束: ALTER TABLE distributors DROP CONSTRAINT zipchk; 向表中增加一个外键约束: ALTER TABLE distributors ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresses(address) MATCH FU...
ALTER [ COLUMN ] column SET STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN } ADD table_constraint DROP CONSTRAINT constraint_name [ RESTRICT | CASCADE ] DISABLE TRIGGER [ trigger_name | ALL | USER ] ENABLE TRIGGER [ trigger_name | ALL | USER ] ...
ALTER TABLE <target_table> ADD CONSTRAINT <foreign key constraint> FOREIGN KEY (<foreign_key_field>)REFERENCES <parent_table>(<primary key field>)...同样增加maintenance_work_mem配置参数也能提高重新创建外键约束的性能。暂停触发器 INSERT或DELETE触发器（如果导入过程还涉及从目标表中删除记录）可能会导致...
In this post, I am sharing one option to Disable / Enable the Foreign Key Constraint in PostgreSQL. During data migration and testing purpose, Database Developer requires to disable Foreign key constraint of a Table. Once you disable constraint, then later you might need ...
ALTER TABLE ... ENABLE/DISABLE CONSTRAINT 表空间DDL 支持表空间( TABLESPACE)相关的DDL操作,例如CREATE TABLESPACE。 无 Numeric数据类型 兼容Oracle的Numeric数据类型。如若需要可以通过设置polar_enable_comp_numeric_format参数进行开启,该参数默认关闭。开启命令如下: SET polar_enable_comp_numeric_format=on; 无...
--table=模式 只导出指定的表 -T, --exclude-table=模式 不导出指定的表 -x, --no-privileges 不导出权限(授权/撤销) --binary-upgrade 仅供升级工具使用 --column-inserts 以带有列名的 INSERT 命令形式导出数据 --disable-dollar-quoting 禁用美元符号引用,使用 SQL 标准引用 --disable-triggers 在仅数据...
PostgreSQL中对应的语法在alter table中,因为触发器与表相关,这样设计语法也符合逻辑的。 https://www.postgresql.org/docs/devel/static/sql-altertable.html ALTERTABLE[ IFEXISTS] [ONLY] name [*] action [, ... ] DISABLETRIGGER[ trigger_name|ALL|USER] ...