The syntax for creating a check constraint in an ALTER TABLE statement in Oracle is: ALTER TABLE table_name ADD CONSTRAINT constraint_name CHECK (column_name condition) [DISABLE]; The DISABLE keyword is optional
在Oracle数据库中,ENUM列是指一种特殊的列类型,它可以存储预定义的枚举值。然而,Oracle数据库并没有直接支持ENUM列类型。相反,我们可以使用Liquibase工具中的'addCheckConstraint'来模拟实现ENUM列的功能。 'addCheckConstraint'是Liquibase中的一个命令,用于向数据库表中添加检查约束。通过使用'addCheckCon...
To allow naming of a CHECK constraint, and for defining a CHECK constraint on multiple columns, use the following SQL syntax:MySQL / SQL Server / Oracle / MS Access:ALTER TABLE Persons ADD CONSTRAINT CHK_PersonAge CHECK (Age>=18 AND City='Sandnes'); ...
I received "ORA-02290: check constraint (PRODUCTION.PROJ_PH_PHASE_NUMBER_CK) violated" after running the following merge statement: {code } merge into project_phase target using (select distinct project_id, phase_cd from staging_iris where project_id is not null)...
CHECK constraint ACHECKconstraint attaches an expression to a constraint. SQL>CREATETABLEVENDORS 2 (IDNUMBER, 3 NAMEVARCHAR2(20), 4 STATUSNUMBER(1) CHECK (STATUS IN (4,5)), 5 CATEGORYVARCHAR2(5) 6 ); Table created. SQL>
Oracle中没有Boolean类型,PL/SQL有Boolean类型.为了替代一个boolean列使用check约束 CREATE TABLE temp(enabled NUMBER(1) NOT NULL); ALTER TABLE temp ADD CONSTRAINT ck_temp_enabled CHECK (enabled IN (0, 1)); 也可以使用varchar2类型 CREATE TABLE temp(enabled VARCHAR2(1) NOT NULL); ...
oracle保存报错check constraint (NVPOLICY.RULE_18) violated 这是在往oralce数据库插入数据时报的错误,经查询是违反了检查约束。 查询此表的约束: select * from user_constraints where table_name='表名' 1. 这是其中一条数据,也是我违反的约束的数据。列constraint_name值为NVPOLICY.RULE_18(表名.此列名),...
CHECK Constraint Syntax The syntax of the SQLCHECKconstraint is: CREATETABLEtable_name ( column_name data_typeCHECK(condition) ); Here, table_nameis the name of the table to be created column_nameis the name of the column where the constraint is to be implemented ...
SQL> select column_name ,nullable from user_tab_cols where table_name='TT'; COLUMN_NAME NUL --- --- TABLE_NAME N TABLE_TYPE N SQL> select constraint_name,constraint_type,search_condition from user_constraints where table_name='TT'; CONSTRAINT_NAME CON SEARCH_CONDITION --- --- --- ...
CREATE TABLE permits the core features of table and column CHECK constraints, for all storage engines. CREATE TABLE permits the following CHECK constraint syntax, for both table constraints and column constraints: [CONSTRAINT [symbol]] CHECK (expr) [[NOT] ENFORCED] ...