Question

CASE when all_cd = ‘A’ and Summary_cd like ‘%red%’ then summary END as SUMMARY_ALL; So, it returns all rows with red value and the rows that dont have red return value NULL. Is there a way to return only the rows that contain red rows and dont return the rows that DO NOT have red?

Answer 1

The code snippet is using a CASE statement to filter rows based on certain conditions and return the summary column. To only return rows that contain the word 'red' and exclude the rows that don't, you can modify the condition inside CASE statement to check for both 'A' in all_cd and the presence of 'red' in Summary_cd.

Step-by-step explanation:

The given code snippet is using a CASE statement to filter rows based on two conditions: if the value of all_cd is equal to 'A', and if the value of Summary_cd contains the word 'red' anywhere in it. If both conditions are true, the summary column is returned, otherwise, it returns NULL.

To only return rows that contain the word 'red' and exclude the rows that don't, you can modify the condition inside CASE statement to both check for 'A' in all_cd and the presence of 'red' in Summary_cd. This can be done by changing the code snippet to: CASE WHEN all_cd = 'A' AND Summary_cd LIKE '%red%' THEN summary END as SUMMARY_ALL;

This modification ensures that only rows satisfying both conditions will include a value in the SUMMARY_ALL column, while rows that don't meet both conditions will have a NULL value in that column.