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 …

I was under the impression that I could get the value of a select input by doing this $(this).val(); and applying the onchange parameter to the select field. It would appear it only works if I ref...

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 …

<select onChange="javascript:doSomething();"> <option>A</option> <option>B</option> <option>C</option> </select> Now, doSomething() only gets triggered when the selection …

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 …

This is a sample code to select all records from a table. Can someone show me how to select the last record of that table? select * from table When I use: SELECT * FROM TABLE ORDER BY …

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.

I'm looking for an efficient way to convert rows to columns in SQL Server, I heard that PIVOT is not very fast, and I need to deal with lot of records. This is my example: Id Value ColumnName …

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?

SELECT column1, colum2, column3, etc. FROM TABLE Does the efficiency really matter in this case? I'd think SELECT * would be more optimal internally if you really need all of the data, …