SQL Server

CSV Append New Row

Demonstrates how to append a new row to 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

    -- Let's say we want to append the following row:
    -- yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a

    -- If we have the row as-is, we could do this:
    DECLARE @csvTemp int
    EXEC @hr = sp_OACreate 'Chilkat.Csv', @csvTemp OUT

    EXEC sp_OAMethod @csvTemp, 'LoadFromString', @success OUT, 'yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a'
    DECLARE @numCols int
    EXEC sp_OAGetProperty @csvTemp, 'NumColumns', @numCols OUT
    DECLARE @i int
    SELECT @i = 0
    DECLARE @row int
    EXEC sp_OAGetProperty @csv, 'NumRows', @row OUT
    WHILE @i < @numCols
      BEGIN
        EXEC sp_OAMethod @csvTemp, 'GetCell', @sTmp0 OUT, 0, @i
        EXEC sp_OAMethod @csv, 'SetCell', @success OUT, @row, @i, @sTmp0
        SELECT @i = @i + 1
      END

    -- Show the updated CSV:
    EXEC sp_OAMethod @csv, 'SaveToString', @sTmp0 OUT
    PRINT @sTmp0

    -- Output should be:
    -- 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
    -- yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a

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


END
GO