|Related to : MS-Access SELECT TOP N subquery SQL|
|Trouble with SELECT WHERE NOT IS/EXISTS Subquery (VB.NET, Access)|
I think something is wrong here
WHERE @startDate <= bookingEndDate AND bookingStartDate <=
try changing it to
WHERE bookingStartDate >= @startDate AND bookingEndDate <=
also put in mind to put ".Date" in your parameters..
|can a SELECT Column value be used in a subquery?|
Give Alias name and use it inside correlated Subquery.
UsageCounts =(SELECT Count(ClassXML.value('(/Data/prpID)',
FROM CustomContent A
WHERE ClassXML.value('(/Data/prpID)', 'INT')
FROM Headers H
|Speed up SYS_* table access created during WITH subquery|
In order to use index scan you have to create it first.
If you want to speed up your query, rewrite it without WITH data AS,
because WITH takes a lot of Oracle resources. Here's how:
where not exists (select 1
where object_id between 1 and 100000
and object_id = t2.object_id);
|Syntax for MySQL SELECT statement with a subquery within the IF statement|
You need a something before the subselect:
WHERE Color = 'Black' AND
IF (Item = 'Dresses' ?? (SELECT * FROM Products WHERE Price <
'$300'), 1, 0) = 1
I am not quite sure what, because there are many other problems, such
Using * where a scalar subquery is expected.
Using '$300' to presumably compare against a number. (Or worse, st
|How to change subQuery to Co-related Subquery?|
I think this is what you're looking for. Just move the query into the
FROM section and use a JOIN to filter the results based on the same
conditions you had in the WHERE clause, except this time you reference
the result set (RS) returned by the subquery.
FROM AdventureWorks.Person.Contact a
INNER JOIN [AdventureWorks].[HumanResources].[Employee] b