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  • 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
  • How to do a Select in a Select - Stack Overflow
    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 dataset that doesn't exi
  • 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
  • Is there an lt;option gt; separator for lt;select gt; elements?
    This Stack Overflow thread discusses the possibility of adding an option separator for select elements in HTML and provides insights from developers
  • sql - Case in Select Statement - Stack Overflow
    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
  • How to select unique records by SQL - Stack Overflow
    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 dupped) So how co
  • mysql - SELECT * WHERE NOT EXISTS - Stack Overflow
    SELECT * from employees WHERE NOT EXISTS ( SELECT name FROM eotm_dyn WHERE eotm_dyn employeeid = employees employeeid ) assuming that the two tables are linked by a foreign key relationship At this point you could use a variety of other options including a LEFT JOIN The optimizer will typically handle them the same in most cases, however
  • sql server - Select with (nolock) - Stack Overflow
    SELECT statements do indeed apply locks unless there is a statement at the top of the query SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED By all means use WITH (NOLOCK) in SELECT statement on tables that have a clustered index, but it would be wiser to only do so if there's a need to




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