其次，sql server的话，得分开写，不能写到一起，你可以写一个tranction,例如 begin transaction;declare @deletedIds table ( id int );DELETE Works output deleted.id into @deletedIds FROM c_works Works JOIN c_works_attach Works_attac
-- 创建订单表 CREATE TABLE orders ( order_id INT PRIMARY KEY, customer_name VARCHAR(100) ); -- 创建订单项表 CREATE TABLE order_items ( item_id INT PRIMARY KEY, order_id INT, product_name VARCHAR(100), FOREIGN KEY (order_id) REFERENCES orders(order_id) ON DELETE CASCADE ); -- 插入...
一个可选关键字,可用在 DELETE 关键字与目标 table_or_view_name 或 rowset_function_limited 之间 。 table_alias 在表示要从中删除行的表或视图的 FROMtable_source子句中指定的别名。 server_name 适用于:SQL Server 2008 (10.0.x) 及更高版本。
Methods to Use the DELETE Statement in SQL There are some methods to delete a row or a specific value from the table. Method 1: Deleting a Single Row in SQL The DELETE statement in SQL uses the WHERE clause to specifically delete a record from the table. ...
sql SELECTlab_no, patient_id, doctor_id,date, amountFROMlaboratory; Example-2: SQL delete using INNER JOIN on two tables with alias name We can use alias name of table in SQL delete statement in the place of table name to specify target and join table name from which data to be remove...
DELETE FROM LEFT JOIN的一般语法如下: DELETEt1FROMtable1ASt1LEFTJOINtable2ASt2ONt1.key=t2.keyWHEREt2.keyISNULL 1. 2. 3. 4. 其中,t1和t2分别表示要删除记录的左表和右表。ON子句用于指定左表和右表之间的关联条件。WHERE子句用于过滤匹配条件为NULL的记录,即只删除左表中没有匹配到右表的记录。
TRUNCATE TABLE]and[HELP LOCK]. The speedofdeleteoperations may also be affectedbyfactors discussedinhttp://dev.mysql.com/doc/refman/8.0/en/delete-optimization.html.Toensure that a givenDELETEstatement doesnottake too much time, the MySQL-specific LIMIT row_count clauseforDELETEspecifies the ...
(`name`)USINGBTREE)ENGINE=InnoDBAUTO_INCREMENT=1570068DEFAULTCHARSET=utf8ROW_FORMAT=REDUNDANTCOMMENT='老的账户表';CREATETABLE`account`(`id`int(11)NOTNULLAUTO_INCREMENTCOMMENT'主键Id',`name`varchar(255)DEFAULTNULLCOMMENT'账户名',`balance`int(11)DEFAULTNULLCOMMENT'余额',`create_time`datetimeNOTNULL...
DELETE a FROM CUSTOMERS AS a INNER JOIN ORDERS AS b ON a.ID = b.CUSTOMER_ID; OutputThe output will be displayed in SQL as follows −Query OK, 3 rows affected (0.01 sec) VerificationWe can verify whether the changes are reflected in a table by retrieving its contents using the SELECT...
3. Syntax for Deleting Using anINNER JOIN The basic syntax and structure to perform a deleting operation with an INNER JOIN in SQL are simple: DELETE Example_Table FROM Example_Table INNER JOIN Example2_Table ON Example_Table.attributeName = Example2_Table.attributeName WHERE condition; ...