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SELECT ID, Name, Boss, (SELECT Name FROM Employees WHERE ID IN (SELECT Boss FROM Employees)) FROM Employees But it gives me an error: "Subquery returned more than 1 value.
I want to grab a value from a table into two different columns for different values from the same table. Use this query as an example (notice how the select is on the same table aliased as 2 different tables): SELECT a.myVal, b.myVal. FROM MyTable a, MyTable b. WHERE.
17 sty 2013 · Join entity twice and give the name column aliases. Remove the last join if additional carrier fields are not needed. select customer_entity.name as customer_name, customer.credit, -- additional customer fields...
The BETWEEN operator selects values within a given range. The values can be numbers, text, or dates. The BETWEEN operator is inclusive: begin and end values are included.
My Items table contains the columns CreateDate, CreatedBy (this is the person's user ID), LastChanged (this is a date), and LastChangedBy (also a user ID, being as the person who entered the item isn't always the same person who created it).
Here is an example that uses date functions. The following query selects all rows with a date_col value from within the last 30 days: . mysql> SELECT something FROM tbl_name-> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col;. The query also selects rows with dates that lie in the future.
18 gru 2017 · You can used a derived table, where this table is defined in the FROM clause. I've given the long code the column aliases SourceField_A and SourceField_B. The derived table is aliased dT. For clarity, the SELECT clause can use the alias in front of the column name. For example, dT.SourceField_A
