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); ALTER TABLE temp...
SQL Error: ORA-02290:checkconstraint (502351838.CHECK_TB_SUPPLIER_ID) violated 02290. 00000 -"check constraint (%s.%s) violated" *Cause: Thevalues being inserted donot satisfy the namedcheck 3.3 示例2:强制插入列的字母为大写 createtable tb_products ( product_id numbernotnull, product_name varc...
SQL Error: ORA-02290: check constraint (502351838.CHECK_TB_SUPPLIER_ID) violated 02290. 00000 - "check constraint (%s.%s) violated" *Cause: The values being inserted do not satisfy the named check 1. 2. 3. 4. 3.3 演示样例2:强制插入列的字母为大写 create table tb_products ( product_id...
CONSTRAINT chk_Person CHECK (P_Id>0 AND City='Sandnes') ) ALTER TABLE 时的 SQL CHECK 约束 当表已被创建时,如需在 "P_Id" 列创建 CHECK 约束,请使用下面的 SQL: MySQL / SQL Server / Oracle / MS Access: ALTER TABLE Persons ADD CHECK (P_Id>0) 如需命名 CHECK 约束,并定义多个列的 CHE...
SQL Server / Oracle / MS Access: CREATETABLEPersons ( ID intNOTNULL, LastName varchar(255)NOTNULL, FirstName varchar(255), Age intCHECK(Age>=18) ); To allow naming of aCHECKconstraint, and for defining aCHECKconstraint on multiple columns, use the following SQL syntax: ...
Remove CHECK Constraint We can remove theCHECKconstraint using theDROPclause. For example, SQL Server, PostgreSQL, Oracle -- remove CHECK constraint named amountCKALTERTABLEOrdersDROPCONSTRAINTamountCK; MySQL -- remove CHECK constraint named amountCKALTERTABLEOrdersDROPCHECKamountCK; ...
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); ...
query to find unique constraints on a table in oracle SQL> CREATE TABLE DEPT_MASTER ( dept_nr NUMBER UNIQUE, dept_name varchar2(100) NOT NULL, dept_status NUMBER(1,0) NOT NULL, created_at date ); Table created. SQL> select CONSTRAINT_NAME,INDEX_NAME,CONSTRAINT_TYPE from user_constraints...
);Code language:SQL (Structured Query Language)(sql) In this syntax, you define theCHECKconstraint after the column list. Creating Oracle Check constraint examples# First, create thepartstable: CREATETABLEparts ( part_idNUMBERGENERATEDBYDEFAULTASIDENTITY, ...
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),...