How do i sum up value from multiple rows from one table base on a condition and insert the sum up value to different table in mysql?

Question

I am trying to select a value from a table( daily_interest_tbl ) and sum up the value base on the customer ID and insert the sum up value and the customer ID to a different table ( monthly_tbl ).

The query will be call in an event to run end of every month.

Answer 1

try:

INSERT INTO monthly_tbl (NAMES_OF_THE_RESPECTIVE_COLUMNS_COMMA_SEPARATED)
(
  SELECT daily_interest_tbl.customerID, SUM(daily_interest_tbl.NAME_OF_THE_VALUE_YOU_WANT_TO_SUM_UP)
  FROM daily_interest_tbl
  GROUP BY customerID
)