sql - How to do a Select in a Select - Stack Overflow
Apr 17, 2009 · I have a table containing a unique ID field. Another field (REF) contains a reference to another dataset's ID field. Now I have to select all datasets where REF points to a …
sql - Case in Select Statement - Stack Overflow
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 …
sql - MySQL SELECT only not null values - Stack Overflow
Is it possible to do a select statement that takes only NOT NULL values? Right now I am using this: SELECT * FROM table And then I have to filter out the null values with a php loop. Is …
sql server - SQL select from a select query - Stack Overflow
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 …
What does it mean `SELECT 1 FROM table`? - Stack Overflow
Jun 13, 2024 · select 1 from table will return the constant 1 for every row of the table. It's useful when you want to cheaply determine if record matches your where clause and/or join.
Is there an onSelect event or equivalent for HTML <select>?
There is no onSelect event for HTML select elements, but you can use other events like change or input to achieve similar functionality.
Change Select List Option background colour on hover
Learn how to change the background color of a select list option on hover using CSS.
How can I set the default value for an HTML <select> element?
Aug 19, 2010 · The function first tries to find the <select> with the id, then it will search for the value_selected in the <select> options and if it finds it, it will set the selected attribute returning …
Change <select>'s option and trigger events with JavaScript
Oct 12, 2013 · How can I change an HTML <select> 's option with JavaScript (without any libraries like jQuery), while triggering the same events as if a user had made the change? For …
How do I make a placeholder for a 'select' box? - Stack Overflow
Apr 27, 2011 · Learn how to create a placeholder for a 'select' box using HTML and JavaScript on Stack Overflow.