脚本所有外键约束-结果集可用于将约束复制到测试数据库

Posted 2021-02-25

/*** Script all Foreign Key Constraints ***/
/*** The Result Set can be used to copy constraints to your testing DB or to keep on hand in case of errors. ***/
SELECT
'ALTER TABLE '+FK.TABLE_NAME+
' ADD CONSTRAINT '+C.CONSTRAINT_NAME+' FOREIGN KEY'+
'('+CU.COLUMN_NAME+') '+
'REFERENCES '+PK.TABLE_NAME+
'('+PT.COLUMN_NAME+')' ForeignKeyScripts
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS FK ON C.CONSTRAINT_NAME = FK.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS PK ON C.UNIQUE_CONSTRAINT_NAME = PK.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU ON C.CONSTRAINT_NAME = CU.CONSTRAINT_NAME
INNER JOIN (
SELECT i1.TABLE_NAME, i2.COLUMN_NAME
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS i1
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE i2 ON i1.CONSTRAINT_NAME = i2.CONSTRAINT_NAME
WHERE i1.CONSTRAINT_TYPE = 'PRIMARY KEY'
) PT ON PT.TABLE_NAME = PK.TABLE_NAME