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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
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 - 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
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