UPSERT *not* INSERT or REPLACE (19 answers) Closed 10 years ago. So I saw some similar questions here but I just could not understand them. My table: 'timestamp' int(30) NOT NULL, 'clientguid' varchar(32) NOT NULL, 'clientip' varchar(32) NOT NULL, 'serverip' varchar(32) NOT ...
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...
SQLite INSERT IF NOT EXISTS ELSE UPDATE 除了使用 REPLACE 语句外,我们还可以使用 INSERT INTO…ON CONFLICT DO UPDATE 语句来实现插入数据时判断是否已存在,如果不存在则插入,如果存在则更新。 语法如下: INSERTINTOtable_name(column1,column2,...)VALUES(value1,value2,...)ONCONFLICT(column_unique_key)DOU...
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');
1 insert into t(sPath) SELECT 'abc' WHERE NOT exists (SELECT * FROM t where sPath = 'abc')
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,则添加,如果存在,则不操作。 在MSSQL中,你可以使用诸如: IFNOTEXISTS(SELECT*FROMBookWHERE….)THENINSERTINTO...ELSEUPDATESET...
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...
> CREATE TABLE IF NOT EXISTS linux ( ...> distro TEXT NOT NULL); 填充一些示例数据,这一次使用小的VALUES快捷方式,因此你可以在一个命令中添加多行。关键字VALUES期望以括号形式列出列表,而用多个逗号分隔多个列表: > INSERT INTO linux (distro) ...
How can I check whether devID already exists and then do the insertion for the following query, if devID does not exist already: INSERT into profiles (devID,alert) VALUES ("ff",1) ; PS: I have already seen this solution in SO, but not sure how to modify the query I have based on...
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.)...