I have an end_date
column that I need to map, the problem is that it has some null values and I would like to have the last day of the month in case it's null.
This is what I've been trying but for some reason it doesn't allow me to:
IFNULL(CAST(end_date) AS STRING, LAST_DAY(CURRENT_DATE(), month))
What am I might be doing wrong?
CodePudding user response:
@Jaytiger end_date is DATE type,
Below is more concise one if you want the result as DATE type, I guess.
IFNULL(DATE(end_date), LAST_DAY(CURRENT_DATE(), month))
Example:
SELECT IFNULL(DATE '2022-08-26', LAST_DAY(CURRENT_DATE(), month)) not_null,
IFNULL(NULL, LAST_DAY(CURRENT_DATE(), month)) `null`,
CodePudding user response:
I managed to solve it, I was using the CAST syntax wrong and I also needed to CAST the last day of the current month as a string too so I could use the IFNULL.
This is how the correct query would look like:
DATE(
IFNULL(
CAST(end_date AS STRING),
CAST(LAST_DAY(CURRENT_DATE(), month) AS STRING)
)
)