SQLForeignKeys以标准结果集的形式返回结果。 如果请求与主键关联的外键,则按FKTABLE_CAT、FKTABLE_SCHEM、FKTABLE_NAME和KEY_SEQ对结果集进行排序。 如果请求与外键关联的主键,则按PKTABLE_CAT、PKTABLE_SCHEM、PKTABLE_NAME和KEY_SEQ对结果集进行排序。 下表列出了结果集中的列。
syntaxsql 복사 sp_foreignkeys [ @table_server = ] N'table_server' [ , [ @pktab_name = ] N'pktab_name' ] [ , [ @pktab_schema = ] N'pktab_schema' ] [ , [ @pktab_catalog = ] N'pktab_catalog' ] [ , [ @fktab_name = ] N'fktab_name' ] [ , [ @fk...
The goals of this task are: - make foreign-key support possible for any storage engine (which could handle it) via a combination of API calls and server handling. - support SQL standard syntax instead of InnoDB syntax. I use the abbreviation FK when discussing the child / referencing table...
然后再设置外键约束: SET FOREIGN_KEY_CHECKS=1; 2. MySQL 5.1.48 导入 MySQL 5.7.18 时遇到 T FOREIGN_KEY_CHECKS = 0 错误的解决方法 #1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘T FOREIGN...
然后再设置外键约束: SET FOREIGN_KEY_CHECKS=1; 2. MySQL 5.1.48 导入 MySQL 5.7.18 时遇到 T FOREIGN_KEY_CHECKS = 0 错误的解决方法 #1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘T FOREIGN...
Here's an example using Oracle syntax: First let's create a table COUNTRY CREATE TABLE TBL_COUNTRY ( COUNTRY_ID VARCHAR2 (50) NOT NULL ) ; ALTER TABLE TBL_COUNTRY ADD CONSTRAINT COUNTRY_PK PRIMARY KEY ( COUNTRY_ID ) ; Create the table PROVINCE CREATE TABLE TBL_PROVINCE( PROVINCE_ID ...
auto fill foreign key Auto increment a bigint column? Auto Increment Insert in Merge Syntax auto-increment column using stored procedure ??? autocommit Autoincrement existing column sql server Automated Conversion from T-SQL to ANSI SQL? Automatic Truncate Long Strings while inserting data. Automatic...
SQL Server / Oracle / MS Access: CREATETABLEOrders ( OrderID intNOTNULLPRIMARYKEY, OrderNumber intNOTNULL, PersonID intFOREIGNKEYREFERENCESPersons(PersonID) ); To allow naming of aFOREIGN KEYconstraint, and for defining aFOREIGN KEYconstraint on multiple columns, use the following SQL syntax: ...
CREATE TABLE b(for_key INT REFERENCES a(not_key)); MariaDB simply parses it without returning any error or warning, for compatibility with other DBMS's. However, only the syntax described below creates foreign keys. FromMariaDB 10.5, MariaDB will attempt to apply the constraint. See theExa...
If you disable a foreign key constraint, you will be able to insert a value that does not exist in the parent table. If you disable a check constraint, you will be able to put a value in a column as if the check constraint was not there. Here are a few examples of disabling and ...