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Editorial Team
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Asked: 2026-05-29T10:51:06+00:00

I have this simple SQL statement: select Expr1.value – Expr2.value FROM (SELECT Expr1 =

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I have this simple SQL statement:

select Expr1.value - Expr2.value FROM
(SELECT
Expr1 = (SELECT COUNT(ID) FROM Table1),
Expr2 = (SELECT COUNT(ID_) FROM Table1 WHERE (UPDATED > CREATED))
)

It throws me the errors:

The multi-part identifier ‘Expr1.value’ could not be bound
The multi-part identifier ‘Expr2.value’ could not be bound

Where is my mistake ?

I read in Stackoverflow but many topics refer to INNER JOIN statements only. I am looking for to do difference between Expr1 and Expr2. (and show the result)

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1 Answer

  1. Editorial Team

    Try:

    select Expr1 - Expr2 FROM
(
    SELECT
    Expr1 = (SELECT COUNT(ID) FROM Table1),
    Expr2 = (SELECT COUNT(ID_) FROM Table1 WHERE (UPDATED > CREATED))
) as t

    This:

    SELECT
    Expr1 = (SELECT COUNT(ID) FROM Table1),
    Expr2 = (SELECT COUNT(ID_) FROM Table1 WHERE (UPDATED > CREATED))

    returns result set with columns named Expr1 and Expr2 and this way you should refer to them. Anyway I prefer as for aliasing columns:

    select Expr1 - Expr2 FROM
(
    SELECT
    (SELECT COUNT(ID) FROM Table1) as Expr1,
    (SELECT COUNT(ID_) FROM Table1 WHERE (UPDATED > CREATED)) Expr2
) as t
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