Question

I have two SELECT statements that return a number each, and I’d like to divide one by the other.
Something like the following, if it would work:

SELECT
    SELECT
        SUM(SIZE)
    FROM
        GLOBAL_STATS_V_M
    WHERE
        ID IN ("DuplicatedRule", "OldRule", "RevRule", "TmpRule")
/
    SELECT
        SUM(SIZE)
    FROM
        GLOBAL_STATS_V_M
    WHERE
        ID IN ("Total")

That gets a ‘Query Error: near “SELECT”: syntax error Unable to execute statement’.

Adding parenthesis does not help.

How to do this?

I’m using Sqliteman

Answer 1

You need to add parenthesis:

SELECT
    (SELECT
        SUM(SIZE)
    FROM
        GLOBAL_STATS_V_M
    WHERE
        ID IN ("DuplicatedRule", "OldRule", "RevRule", "TmpRule")
    )
    /
    (SELECT
        SUM(SIZE)
    FROM
        GLOBAL_STATS_V_M
    WHERE
        ID IN ("Total")
    )