troubleshooting Question

Converting nvarchar columns datatype to varchar datatype thru scripting

Avatar of thumper631
thumper631 asked on
Microsoft SQL Server
11 Comments2 Solutions1926 ViewsLast Modified:
Hello.

I was given a client SQL database that had be converted from Access to SQL 2000.  My problems is that the data was pull in as NVarchar instead of Varchar.  In another example here in EE https://www.experts-exchange.com/Databases/Microsoft_SQL_Server/Q_20869435.html?query=converting+nvarchar+to+varchar&searchType=topic the script seem to work if I follow the converstation however I am expected to set the width to 500 char.  I was wondering if there was a way for the script to automaticly set the width.  Here is an example of the orginal converting script


DECLARE curFixColsGetTables CURSOR
FOR SELECT TABLE_NAME
FROM information_schema.tables
WHERE table_Type = 'Base Table'
AND table_name <> 'dtproperties'

OPEN curFixColsGetTables
FETCH NEXT FROM curFixColsGetTables into @TableName

WHILE @@FETCH_STATUS = 0
BEGIN
 
  DECLARE curFixColsGetCols CURSOR
  FOR SELECT COLUMN_NAME
  FROM information_schema.columns
  WHERE table_name = @TableName AND DATA_TYPE = 'nvarchar'

  OPEN curFixColsGetCols
  FETCH NEXT FROM curFixColsGetCols INTO @ColumnName
 
  WHILE @@FETCH_STATUS = 0
  BEGIN
    SELECT @strSQL = 'ALTER TABLE ' + @TableName
           + ' ALTER COLUMN ' + @ColumnName
           + ' varchar(500)'
    PRINT @strSQL
    EXEC  SP_EXECUTESQL @strSQL

    FETCH NEXT FROM curFixColsGetCols
    INTO @ColumnName
  END
  CLOSE curFixColsGetCols
  DEALLOCATE curFixColsGetCols
 
  FETCH NEXT FROM curFixColsGetTables
  INTO @TableName
  END
CLOSE curFixColsGetTables
DEALLOCATE curFixColsGetTables

So if the NVarchar width is NVarchar(60) then I think that I would like for this to be Varchar(60)

Thanks

James
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