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Editorial Team
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Asked: 2026-06-09T13:17:29+00:00

SET @sql = ‘Declare ChildTableMigrator CURSOR FOR select [‘+@FieldName+’] , [‘+@FieldName+’Alias] from [‘ +

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SET @sql = 'Declare  ChildTableMigrator  CURSOR FOR  select ['+@FieldName+'] , ['+@FieldName+'Alias] from ['  + @SourceTable + '].[dbo].[Port] where ['  + @SourceTable + '].[dbo].[Port].[' + @FieldName +  '] IS NOT NULL AND ['  + @SourceTable + '].[dbo].[Port].[' + @FieldName +  '] !='''

PRINT @sql
exec sp_executesql @sql

Hi,

How to check NULL and EMPTY with a sql dynamic query ? , as per EMPTY check 

@FieldName +  '] !='''

it thorws the error

Unclosed quotation mark after the character string ”.

How to overcome this ?

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1 Answer

  1. Editorial Team

    You need to replace 

     @FieldName + '] !='''

    with 

     @FieldName + '] !='''''.

    Quotation marks need to be escaped when used inside a string. In your original statement, you escaped only one quotation mark resulting in a string with only one quotation mark.

    But you could do even better by using parametrized sql

     @FieldName + '] !=@EmptyField
 exec sp_executesql @sql, N'@EmptyField VARCHAR(32)', ''
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