INSERT INTO Table2(Id, Name) SELECT Id, Name FROM Table1 但是,在我的情况下,可能存在重复的ID Table2(在我的情况下,它只是“ 1”),我不想再次复制该ID ,因为这会引发错误。 我可以这样写: IF NOT EXISTS(SELECT 1 FROM Table2 WHERE Id=1) INSERT INTO Table2 (Id, name) SELECT Id, name FR...
sqlserver 判断是否存在,如果存在就update,不存在就insert if not exists(SELECT 1 from pr_equipmentFacility eq inner join pr_equipmentFacilityEx ex on eq.equipmentFacilityID = ex.equipmentFacilityID where eq.equipmentFacilityCode='对应编码') INSERT into pr_equipmentFacilityEx (equipmentFacilityID,brand,e...
**使用insert ignore if not exist,**具体格式为: INSERT IGNORE INTO 表名('字段') SELECT '字段需要插入时的数据' FROM dual WHERE NOT EXISTS (SELECT * FROM '表名' WHERE '需要被限制不重复的字段' = '被限制字段本次插入的数据') 1. 2. 3. 4. 比如mybatis使用时为: INSERT IGNORE INTO user...
INSERT INTO books (name) SELECT 'Songxingzhu' WHERE NOT EXISTS (SELECT id FROM books WHERE id = 1) 三、Sqlserver中: SqlServer中需要另一种写法: IF NOT EXISTS (SELECT id FROMbooksWHERE id = 1)INSERT INTO books (name) SELECT 'Songxingzhu'...
INSERT INTO Payments(Amount) VALUES(12.33) WHERE Payments.CustomerID = '145300'; 如何调整这个来执行?我也尝试过这样的事情: IF NOT EXISTS( SELECT 1 FROM Payments WHERE Payments.CustomerID = '145300' ) INSERT INTO Payments(Amount) VALUES(12.33); 原文由 Matt Larsuma 发布,翻译遵循 CC BY-SA...
INSERT INTO failed_logins_ip_address (ip_address, attempts_count, attempt_datetime) VALUES ('xxx', 1, CURRENT_TIMESTAMP) ON DUPLICATE KEY UPDATE attempts_count = attempts_count + 1, attempt_datetime = CURRENT_TIMESTAMP 'ip_addess' 列是唯一的,MSSQL 和 MySQL 的表结构相同。
IF NOT EXISTS ( SELECT name FROM sys.databases WHERE name = N'TutorialDB' ) CREATE DATABASE [TutorialDB] GO USE [TutorialDB] -- Create a new table called 'Customers' in schema 'dbo' -- Drop the table if it already exists IF OBJECT_ID('dbo.Customers', 'U') IS NOT NULL ...
1、方法一 IF NOT EXISTS(SELECT * FROM TABLE_NAME WHERE FILED1 = 1 ) THEN INSERT INTO TABLE_NAME VALUES(1 2、将要插入的数据先写入临时表，然后用 INSERT INTO TABLE_NAME SELECT * FROM #TEMP_TABLE A LEFT JOIN TABLE_NAME ON A.FILED1 = B.FIELD1 WHERE B.FILED1 IS NULL ...
要求:新增一个员工时,如果该员工已存在(以员工号f_emp_code作为判断依据),则更新,否则插入。而且工资f_salary,更新时,不得低于原工资(即:工资只能涨,不能降)。...方法一:传统方法插入 INSERT INTO t_emp( f_emp_code , f_emp_name , f_city ...
SQL Server上INSERT或UPDATE的解决方案 INSERT和UPDATE的执行状态- MS SQL Server SQL insert、update存储过程 insert with update的SQL insert触发器 SQL Server存储过程: UPDATE with lowest,else INSERT如果已有值 INSERT IF NOT EXISTS ELSE UPDATE in Spark SQL SQL Server : INSERT INTO的帮助 SQL使用Insert/Upd...