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How to return .T. of .F. from SQL server?
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01568922
Message ID:
01568925
Vues:
37
>>Hi,
>>
>>I want to execute an IF expression against a SQL Server using SQLEXEC() and return some "meaningful" result that will tell me if IF was True or False. For example: Here is the IF expression:
>>
>>
>>cExpr4Sql = "IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.Columns WHERE Table_Name = 'MyTable' 
>>AND COLUMN_NAME = 'MyField1' AND CHARACTER_MAXIMUM_LENGTH = 50 )"
>>
>>
>>When executing the above expression in SSMS it tells me if the column MyField1 has a length of 50 char or not.
>>
>>If I pass the above expression to SQLEXEC() how do I return the result? E.g.
>>
>>
>>xReturn = SQLEXEC( nConn, cExpr4Sql )
>>
>>
>>TIA for any suggestions.
>
>
>TEXT TO cExpr4Sql NOSHOW
>     IF EXISTS(SELECT *
>                      FROM INFORMATION_SCHEMA.Columns WHERE Table_Name = 'MyTable'
>                                                        AND COLUMN_NAME = 'MyField1'
>                                                        AND CHARACTER_MAXIMUM_LENGTH = 50 )
>       SELECT CAST(1 AS bit) AS FieldExists
>     ELSE
>       SELECT CAST(0 AS bit) AS FieldExists
>ENDTEXT
>
>xReturn = SQLEXEC( nConn, cExpr4Sql, "cCursor" )
>WAIT WINDOW cCursor.FieldExists
>
Thank you very much!
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