Views can be indexed but CTE can’t. So this is one important point. CTE work excellent on tree hierarchyi.e. recursive Also, consider views when dealing with complex queries. Views being a physical object on database (but does not store data physically) and can be used on multiple queries, thus provide flexibility and centralized approach. CTE, … Read more
Check STR. You need something like SELECT STR([Column_Name],10,0) ** This is SQL Server solution, for other servers check their docs.
You could use Ctrl+Shift+Enter to run everything with semicolon end. For Mac ⌘+shift+return
you could use a cursor: DECLARE @id int DECLARE @pass varchar(100) DECLARE cur CURSOR FOR SELECT Id, Password FROM @temp OPEN cur FETCH NEXT FROM cur INTO @id, @pass WHILE @@FETCH_STATUS = 0 BEGIN EXEC mysp @id, @pass … — call your sp here FETCH NEXT FROM cur INTO @id, @pass END CLOSE cur DEALLOCATE … Read more
Using NULL is preferable, for two reasons: NULL is used to mean that the field has no value, which is exactly what you’re trying to model. If you decide to add some referential integrity constraints in the future, you will have to use NULL.
SELECT DATE_FORMAT(`date`, ‘%Y-%m-%d %H:%i’) AS `formatted_date` FROM `table`;
As your data already in varchar, you have to convert it into date first: select convert(varchar(10), cast(ts as date), 101) from <your table>
declare @S varchar(20) set @S = ‘1,2,3,4,5’ while len(@S) > 0 begin –print left(@S, charindex(‘,’, @S+’,’)-1) exec YourSP left(@S, charindex(‘,’, @S+’,’)-1) set @S = stuff(@S, 1, charindex(‘,’, @S+’,’), ”) end Try on SE Data: Walk the string
The confusion is justified to a degree – and other RDBMS like Oracle do have stored procedure parameters which can be of type IN (input only), OUT (output only), or INOUT (both ways – “pass by reference” type of parameter). SQL Server is a bit sloppy here since it labels the parameter as OUTPUT, but … Read more
‘=’ isn’t valid ANSI SQL, so you’ll have difficulty should you wish to run your application on a different DBMS. (It’s when ANSI form is used but the optional ‘AS’ is omitted I find the results difficult to read, personally.)