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 …

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 …

Dec 20, 2017 · what most of the solutions here that employ optgroup are missing is the fact that a non-empty label attribute is required as per the html specification; therefore I would opt for one …

This Stack Overflow post discusses the differences between HTML form Select-Option and Datalist-Option.

If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory? The network …

Dec 13, 2016 · Is the important thing here to get a distinct list of those values, or to get that list of values into SQL? As @JeppeStigNielsen says, there are other ways to get distinct values from …

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 …

248 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.

Using SELECT SELECT @ModelID = m.modelid FROM MODELS m WHERE m.areaid = 'South Coast' Using SET SET @ModelID = (SELECT m.modelid FROM MODELS m WHERE …