sql - How to do a Select in a Select - Stack Overflow SELECT * FROM YourTable y WHERE NOT EXISTS (SELECT * FROM OtherTable o WHERE y Ref = o Ref) SELECT * FROM YourTable WHERE Ref NOT IN (SELECT Ref FROM OtherTable WHERE Ref IS NOT NULL) SELECT y * FROM YourTable y LEFT OUTER JOIN OtherTable o ON y Ref = o Ref WHERE o Ref IS NULL
sql server - SQL select from a select query - Stack Overflow I want to do a select request that perform a first select and then use that selection to perform a second select I made a 1st version using a temp table but I would like to know if there is a way to do it without the temporary table my code with the temp table is like :
sql - Case in Select Statement - Stack Overflow Using a SELECT statement with a searched CASE expression Within a SELECT statement, the searched CASE expression allows for values to be replaced in the result set based on comparison values The following example displays the list price as a text comment based on the price range for a product
What does it mean `SELECT 1 FROM table`? - Stack Overflow SELECT * FROM TABLE1 T1 WHERE EXISTS ( SELECT 1 FROM TABLE2 T2 WHERE T1 ID= T2 ID ); Basically, the above will return everything from table 1 which has a corresponding ID from table 2 (This is a contrived example, obviously, but I believe it conveys the idea
database - How to select unique records by SQL - Stack Overflow When I perform SELECT * FROM table I got results like below: 1 item1 data1 2 item1 data2 3 item2 data3 4 item3 data4 As you can see, there are dup records from column2 (item1 are dupped) So how co
sql - Insert into . . . values ( SELECT . . . FROM . . . - Stack Overflow This can be done without specifying the columns in the INSERT INTO part if you are supplying values for all columns in the SELECT part Let's say table1 has two columns This query should work: INSERT INTO table1 SELECT col1, col2 FROM table2 This WOULD NOT work (value for col2 is not specified): INSERT INTO table1 SELECT col1 FROM table2
Manually type in a value in a Select Drop-down HTML list? This almost works In the example which asks a user to select a language So I typed in "C#", but as soon as a click out of the combo-box, my entry goes away I need to be able to write in custom answers Not just ones in the Select List –