Decode function in where clause

i am developing an sql code that includes decode keyword and in keyword :
SELECT
NAME
FROM T
WHERE NO_ID IN
DECODE ( var,
1,1,
2,(SELECT ID FROM A))
when, var variable is equal to 2, there will be an error :
ora-14027 single row subquery returns more than one row.
how can i fix it?

Hi,
The answer to "how can i fix it?" depends on what you want to do. First explain that, and someone will help you.
For example, "If var = 1, then I want to test if no_id is 1. If var = 2, then I want to see if no_id is equal to any id in table a."
If that happens to be the problem:
WHERE   (   var     = 1
        AND no_id   = 1
OR      (   var     = 2
        AND no_id  IN (SELECT id FROM a)
        )

Similar Messages

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    >
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  • Case function in where clause

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  • Clarification on using function in where clause of oracle sql query

    I have an issue in regarding function using where clause of sql query..
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  • Problem with DECODE block in WHERE clause

    Hi,
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    The value returned by SELECT DECODE(1, 1, '''sample1'', ''sample2'', ''sample3''',2, '''sample4'', ''sample5'', ''sample6''') FROM DUAL;
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  • Can't have aggregate function in WHERE clause clause

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    Hi,
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  • Help:alternate for calling function in where clause

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  • Using function in where clause

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  • Decode/Case in Where clause

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    Scott: Did you try running that SQL statement in SQL Workshop in Apex? You can run it as it is, it will popup a window asking you to enter values for the bind variables.
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    http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:110612348061

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