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I have tried to use Case and SET NOEXEC ON but get the following errors:

Syntax Error: unexpected 'SET' (set)
Syntax Error: missing 'closing parenthesis'

INSERT INTO tag (table, repr, tag, value)
    SELECT 'product' AS table,
           @Id AS repr,
           'product_code' AS tag,
           CASE @Code       
             WHEN NOT null THEN @Code
             ELSE SET NOEXEC ON
           END AS value`

@Id and @Code are declared parameters in the script

  • 1
    please tag your question with the DBMS you're using. Also 'null' <> NULL – Max Vernon Mar 21 '18 at 17:38
  • 1
    Is there a reason you can't simply define the value column as NOT NULL? The insert would fail if you tried to INSERT a null value into that column. Also, when you say you want to stop the script, do you mean terminate with an error or simply silently do nothing? – Scott Hodgin Mar 21 '18 at 18:24
  • I cannot alter the column to be NOT NULL. And I want to terminate with an error message if possible – DBNewbie Mar 21 '18 at 18:26
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SET NOEXEC ON is not MySQL syntax.

The thing to do is to avoid selecting it:

INSERT INTO tag (table, repr, tag, value)
    SELECT 'product' AS table,
            @Id AS repr,
            'product_code' AS tag,
            @Code AS value`        -- The WHERE will prevent nulls
        WHERE @Code IS NOT NULL;   -- avoid generating anything to insert when NULL
  • But this will not stop execution of script, right? – DBNewbie Mar 27 '18 at 23:40
  • @DBNewbie - If you need that, we need to see the rest of the Stored Procedure. – Rick James Mar 28 '18 at 2:12
  • There are more insert statements after this hence would need to stop script execution. Can I use BEGIN and END with exception or catch? – DBNewbie Mar 28 '18 at 22:09
  • Maybe something like IF ( SELECT ROWS_AFFECTED() ) > 0 ) THEN ... (do rest of proc) END; – Rick James Mar 29 '18 at 0:43
  • Whenever I use IF, it throws an error: – DBNewbie Mar 30 '18 at 21:10

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