SQL Server

CSV Set Column Name

Demonstrates how to set the name of a column in a CSV. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- We have the following CSV...

    -- permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
    -- lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
    -- mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
    -- flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
    -- infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
    -- gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

    DECLARE @bCrlf int
    SELECT @bCrlf = 1
    DECLARE @sb int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sb OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round', @bCrlf
    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b', @bCrlf
    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed', @bCrlf
    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a', @bCrlf
    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a', @bCrlf
    EXEC sp_OAMethod @sb, 'AppendLine', @success OUT, 'gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed', @bCrlf

    DECLARE @csv int
    EXEC @hr = sp_OACreate 'Chilkat.Csv', @csv OUT

    EXEC sp_OASetProperty @csv, 'HasColumnNames', 1
    EXEC sp_OAMethod @sb, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @csv, 'LoadFromString', @success OUT, @sTmp0

    -- Get each column name..
    DECLARE @numCols int
    EXEC sp_OAGetProperty @csv, 'NumColumns', @numCols OUT
    DECLARE @i int
    SELECT @i = 0
    WHILE @i < @numCols
      BEGIN
        EXEC sp_OAMethod @csv, 'GetColumnName', @sTmp0 OUT, @i
        PRINT @sTmp0
        SELECT @i = @i + 1
      END

    PRINT '---'

    -- Change the "numEmps" column name to "employeeCount"
    EXEC sp_OAMethod @csv, 'SetColumnName', @success OUT, 2, 'employeeCount'

    EXEC sp_OAGetProperty @csv, 'NumColumns', @numCols OUT
    SELECT @i = 0
    WHILE @i < @numCols
      BEGIN
        EXEC sp_OAMethod @csv, 'GetColumnName', @sTmp0 OUT, @i
        PRINT @sTmp0
        SELECT @i = @i + 1
      END

    -- Use the updated column name...

    PRINT '---'
    EXEC sp_OAMethod @csv, 'GetCellByName', @sTmp0 OUT, 3, 'employeeCount'
    PRINT @sTmp0

    -- Output should be:

    -- permalink
    -- company
    -- numEmps
    -- category
    -- city
    -- state
    -- fundedDate
    -- raisedAmt
    -- raisedCurrency
    -- round
    -- ---
    -- permalink
    -- company
    -- employeeCount
    -- category
    -- city
    -- state
    -- fundedDate
    -- raisedAmt
    -- raisedCurrency
    -- round
    -- ---
    -- 105

    EXEC @hr = sp_OADestroy @sb
    EXEC @hr = sp_OADestroy @csv


END
GO