July 25, 2008 03:17pm pdt

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05.05.2008 at 04:20AM PDT, ID: 23376114

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9.8

A Union query output issue with NULL data problem... I think?

Zones: SQL Query Syntax, MySQL

I'm successfully running a UNION query (aka - it works) but having problems with the output of a field (Usage_Billed) that should be DOUBLE coming out as TEXT and I need to know how to fix it.

SELECT
IIF(A.Site_Number IS NULL, B.Site_Number, A.Site_Number) AS Site_Number,
IIF(B.Usage_Billed IS NULL, '', B.Usage_Billed) AS LY_ELEC_Usage_Billed,
IIF(A.Usage_Billed IS NULL, '', A.Usage_Billed) AS TY_ELEC_Usage_Billed

FROM
Summarized_Electric_TY A
LEFT JOIN Summarized_Electric_LY B ON B.Site_Number = A.Site_Number
WHERE (A.Usage_Billed IS NULL or B.Usage_Billed IS NULL)

UNION SELECT
IIF(A.Site_Number IS NULL, B.Site_Number, A.Site_Number) AS Site_Number,
IIF(B.Usage_Billed IS NULL, '', B.Usage_Billed) AS LY_ELEC_Usage_Billed,
IIF(A.Usage_Billed IS NULL, '', A.Usage_Billed) AS TY_ELEC_Usage_Billed

FROM
Summarized_Electric_TY A
RIGHT JOIN Summarized_Electric_LY B ON B.Site_Number = A.Site_Number

WHERE (A.Usage_Billed IS NULL or B.Usage_Billed IS NULL)

I think I found the problem by creating a table from these results and noticed that the field (Usage_Billed) was coming out as TEXT and not as a DOUBLE probably due to the IIF statement needed, so how do I output a DOUBLE and not TEXT in the field TY_ELEC_Usage_Billed and LY_ELEC_Usage_Billed?

Thanks,

NG

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Question Stats

Zone: Programming

Question Asked By: nike_golf

Solution Provided By: angelIII

Participating Experts: 2

Solution Grade: A

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