ifnotexists(select*fromErrorConfigwhereType='RetryWaitSeconds') begin insertintoErrorConfig(Type,Value1) values('RetryWaitSeconds','3') end 只能用: 1 2 3 insertintoErrorConfig(Type,Value1) select'RetryWaitSeconds','3' wherenotexists(select*fromErrorConfigwhereType='RetryWaitSeconds') 因为SQLite 中...
mssql语法: 代码如下: if not exists (SELECT 1 FROM [t_Table] where [fName] = '张三') insert into [t_Table] ([fName]) values ('张三'); sqlite语法: 代码如下: insert into [t_Table] ([fName]) select '张三' where not exists (SELECT 1 FROM [t_Table] where [fName] = '张三'...
1insertorreplaceintotable_name( id,type)values(1,0);2insertorignoreintotable_name (id,type)values(2,0);3IFNOTEXISTS(SELECT*FROMtable_nameWHERE….)THENINSERTINTO...ELSEUPDATESET... 上面的第一条语句是每次执行时,如果不存在,则添加,如果存在,则更新。 上面的第二条语句是每次执行时,如果不存在,...
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'
复制代码代码如下:if not exists (SELECT 1 FROM [t_Table] where [fName] = '张三')insert into [t_Table] ([fName]) values ('张三');复制代码代码如下:insert into [t_Table] ([fName]) select '张三'where not exists (SELECT 1 FROM [t_Table] where [fName] = '张三');
SQLite实现ifnotexist类似功能的操作 需要实现：if not exists(select * from ErrorConfig where Type='RetryWaitSeconds')begin insert into ErrorConfig(Type,Value1)values('RetryWaitSeconds','3')end 只能⽤：insert into ErrorConfig(Type,Value1)select 'RetryWaitSeconds','3'where not exists(select * from...
使用insert into插入重复数据时,数据库会报错,但是使用insert or ignore into数据库就不会报错了。 insert or replace into table_name( id,type) values (1,0); insert or ignore into table_name (id,type) values (2,0); IF NOT EXISTS(SELECT * FROM table_name WHERE ….) THEN INSERT INTO ......
问SQLite 'IF NOT EXISTS‘语法错误ENtableA |column1 | column1 |column3 | --- tableb |column...
How to do IF NOT EXISTS in SQLite http://stackoverflow.com/questions/531035/how-to-do-if-not-exists-in-sqlite How about this? INSERT OR IGNORE INTO EVENTTYPE (EventTypeName) VALUES 'ANI Received' 1. (Untested as I don't have SQLite... howeverthis linkis quite descriptive.)...
CREATE TABLE IF NOT EXISTS STUDENT(Sno integer primary key, Sname text not null, Ssex text,Sage integer check(Sage>14),Sdept text default 'CS'); 该表的属性就是按照上一节表属性 执行结果: 查看表: 看到STUDENT,说明该表创建好了。【注意】 ...