在SQL Server中,可以使用DELETE语句来删除数据库中的数据。如果需要批处理删除多条记录,可以使用以下几种技术:
DELETE FROM table_name WHERE age > 30;
DELETE FROM table_name WHERE age IN (25, 30);
DELETE t1
FROM table_name1 t1
JOIN table_name2 t2 ON t1.id = t2.id
WHERE t2.condition = 'value';
DELETE FROM table_name WHERE id IN (SELECT id FROM another_table WHERE condition = 'value');
需要注意的是,在执行DELETE语句时要谨慎,确保删除的数据是正确的,可以先使用SELECT语句来查看将要删除的数据,然后再执行DELETE语句。