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SELECT e.ID, e.Name, e.Boss, (SELECT top 1 Name FROM Employees b where b.ID = e.Boss) as BossName FROM Employees e
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.
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.
9 wrz 2014 · There may be a better way but as a simple one off query I would probably do it like: SELECT athleteID, eventName, sum(CASE WHEN meetName='Snowflake' THEN score ELSE 0 END) as SnowScore, sum(CASE WHEN meetName='Valentine' THEN score ELSE 0 END) as ValScore. FROM performances.
Using the technique of querying the table twice against the same field can create this matrix quickly and easily.
24 lut 2021 · I have the following join statement, which shows all the columns, and shows the Secretary's name and number, as well as the Manager Number , but I can't get the Manager Name to show up, or not repeat the same info as Secretary Name. What I have so far: SELECT. SECRETARY.SECRETARY_NUMBER, SECRETARY.EMPLOYEE_NUMBER AS SECRETARY_EMPLOYEE,
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. SELECT dT.SourceField_A.
