sql - How to do a Select in a Select - Stack Overflow
Dec 18, 2014 · 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 - 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 …
Is there an <option> separator for <select> elements?
This Stack Overflow thread discusses the possibility of adding an option separator for select elements in HTML and provides insights from developers.
How can I set the default value for an HTML <select> element?
Aug 19, 2010 · Learn how to set the default value for an HTML <select> element using JavaScript or HTML techniques.
Is there an onSelect event or equivalent for HTML <select>?
<select onChange="javascript:doSomething();"> <option>A</option> <option>B</option> <option>C</option> </select> Now, doSomething() only gets triggered when the selection …
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 …
Oracle SQL - select within a select (on the same table!)
Oracle SQL - select within a select (on the same table!) Asked 15 years, 3 months ago Modified 9 years, 2 months ago Viewed 142k times
What does it mean `SELECT 1 FROM table`? - Stack Overflow
SELECT 1 FROM table What does this 1 mean, how will it be executed, and what will it return? Also, in what type of scenarios can this be used?
mysql - SELECT * WHERE NOT EXISTS - Stack Overflow
SELECT * from employees WHERE NOT EXISTS (SELECT name FROM eotm_dyn) So basically I have one table with a list of employees and their details. Then another table with some other …
What does SQL Select symbol || mean? - Stack Overflow
Oct 14, 2017 · What does SQL Select symbol || mean? Asked 11 years, 7 months ago Modified 11 months ago Viewed 187k times