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I have an SQL-query where I use Oracle CASE to compare if a date column is less than or greater than current date. But how do I use that CASE -statement in a GROUP BY -statement? I would like to count the records in each case.
27 lis 2013 · You can either use the case as is in the group by, like this: SELECT SOME_TABLE_ALIAS.COLUMN1, OTHER_TABLE_ALIAS.COLUMN2, CASE WHEN SOME_TABLE_ALIAS.COLUMN3 IS NOT NULL THEN 'A' ELSE 'B' END AS CASE_COLUMN FROM SOME_TABLE SOME_TABLE_ALIAS ...
In your query when you are using the GROUP BY it is using the individual values for each row. You'd need to use a subquery to get the result: select stops, count(*) Total. from. (. select. CASE. when Stops in ('1Stop', '1 Stop', '1 stop') then '1-Stop'. ELSE Stops.
30 mar 2023 · Learn how you can combine SQL CASE WHEN and GROUP BY to create custom categories in your SQL queries. Raw data, by its very nature, is not always human readable. Many times, the data you’re querying is in its most unformatted form.
11 cze 2018 · How to use conditional case with aggregate function. WHEN CH.TCN_DATE BETWEEN TO_DATE ('01-JAN-2016','DD/MM/YYYY') AND TO_DATE ('30-JUN-2016','DD/MM/YYYY') THEN ROUND (SUM (CH.PAID_AMOUNT)/COUNT (DISTINCT CH.MBR_IDENTIFIER),2) Can an aggregate function be used in the THEN and then grouped? Please help!
The GROUP BY clause is used in a SELECT statement to group rows into a set of summary rows by values of columns or expressions. The GROUP BY clause returns one row per group. The GROUP BY clause is often used with aggregate functions such as AVG(), COUNT(), MAX(), MIN() and SUM().
Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. The CASE expression evaluates a list of conditions and returns one of the multiple possible results. You can use a CASE expression in any statement or clause that accepts a valid expression.
