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  1. 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 there a ...

  2. Using a SELECT statement within a WHERE clause

    SELECT * FROM ScoresTable WHERE Score = (SELECT MAX(Score) FROM ScoresTable AS st WHERE st.Date = ScoresTable.Date) Is there a name to describe using a SELECT statement within a WHERE clause? Is...

  3. Is there an <option> separator for <select> elements?

    Dec 20, 2017 · This Stack Overflow thread discusses the possibility of adding an option separator for select elements in HTML and provides insights from developers.

  4. html select - Get selected value in dropdown list using JavaScript ...

    Jul 6, 2009 · Learn how to retrieve the selected value from a dropdown list using JavaScript.

  5. 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.

  6. How to select data of a table from another database in SQL Server?

    Suppose that I have a database which name is testdb in test server. I also have a database named proddb in prod server. Now I want to select data of a table of testdb database from proddb database....

  7. 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.

  8. plsql - Declaring a variable and setting its value from a SELECT …

    SELECT INTO DECLARE the_variable NUMBER; BEGIN SELECT my_column INTO the_variable FROM my_table; END; Make sure that the query only returns a single row: By default, a SELECT INTO statement must return only one row. Otherwise, PL/SQL raises the predefined exception TOO_MANY_ROWS and the values of the variables in the INTO clause …

  9. 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 based on comparison values.

  10. sql - How do I use ROW_NUMBER ()? - Stack Overflow

    Jun 7, 2009 · For the first question, why not just use? SELECT COUNT(*) FROM myTable to get the count. And for the second question, the primary key of the row is what should be used to identify a particular row. Don't try and use the row number for that.