wherenotexists(select*fromErrorConfigwhereType='RetryWaitSeconds') 因为SQLite 中不支持SP 补充:sqlite3中NOT IN 不好用的问题 在用sqlite3熟悉SQL的时候遇到了一个百思不得其解的问题,也没有在google上找到答案。虽然最后用“迂回”的方式碰巧解决了这个问题,但暂时不清楚原理是什么,目前精力有限,所以暂时记录下...
在这个示例中,SQLite的语法更为简洁,只需在CREATE TABLE语句前加上IF NOT EXISTS关键字,如果表已经存在,则不会执行创建操作。 2、使用IF NOT EXISTS添加索引 与MSSQL类似,SQLite中也可以使用IF NOT EXISTS来判断数据库中是否已经存在某个索引,如果不存在,则创建该索引,以下是给"Students"表的"Name"列添加索引的...
在SQLite中,CREATE TABLE IF NOT EXISTS 语句本身就包含了检查表是否存在的逻辑。你不需要显式地编写一个单独的查询来检查表是否存在;这个语句会在尝试创建表之前自动进行这个检查。 2. 如果表不存在,则创建表 这正是 CREATE TABLE IF NOT EXISTS 语句的目的。如果指定的表名在数据库中不存在,SQLite 将执行创建...
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'); 更多信息请查看IT技...
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...
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.)...
68 Check if a column exists in SQLite 0 SQLite query for may not be in condition 0 SQLite Query for rows where value may exist? 1 If exists ... else clause in SQLite 0 SQL EXIST statement in SQLite Hot Network Questions Should I use ChatGPT to create cover letter for assistant...
1 insert into t(sPath) SELECT 'abc' WHERE NOT exists (SELECT * FROM t where sPath = 'abc')
http://stackoverflow.com/questions/531035/how-to-do-if-not-exists-in-sqlite How about this? INSERTORIGNOREINTOEVENTTYPE (EventTypeName)VALUES'ANI Received' (Untested as I don't have SQLite... howeverthis linkis quite descriptive.) Additionally, this should also work: ...
sqlite if not exists应用实例 INSERT or replace INTO [main].[RecordInfo]([WorkID],[bArtificialAttendance],[fThreshold],[Attendance_Time],[PicPath])select'012','1','60.00','2015-11-25 11:59:08.000','123'wherenot exists (SELECT [Attendance_Time] FROM [main].[RecordInfo] WHERE [WorkID...