SELECT * FROM ( SELECT col1 AS col FROM yourtable UNION SELECT col2 AS col FROM yourtable UNION -- ... UNION SELECT coln AS col FROM yourtable ) T1 WHERE col IS NOT …

Apr 17, 2009 · SELECT * FROM YourTable y WHERE NOT EXISTS (SELECT * FROM OtherTable o WHERE y.Ref = o.Ref) SELECT * FROM YourTable WHERE Ref NOT IN …

Feb 26, 2019 · 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 …

Jan 7, 2013 · 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 …

Mar 3, 2015 · In MS Access, I want to insert a new column into the returned result of a select query. The new column has the same value for every row. For example, my select returns …

Sep 23, 2012 · The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also …

The simple difference between select Into and Insert Into is: --> Select Into don't need existing table. If you want to copy table A data, you just type Select * INTO [tablename] from A. Here, …

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 …

SELECT * FROM (SELECT * FROM ( SELECT id, client_id, create_time, ROW_NUMBER() OVER(PARTITION BY client_id ORDER BY create_time DESC) rn FROM order ) WHERE …

Nov 1, 2017 · Learn how to get the selected value or text from a select element on change event using JavaScript.