Ruby ODBC Error 37000 (102) Sql syntax error - sql

Question

I have the following ruby database insert using ODBC. Connection is fine.
dbh.do( "INSERT INTO prowlerRunningResults(ProwlerDriver, SourceURL, Title, DestinationURL, FileSource, FileType, FileName, LastModified, FileSize, HashMD5, HashSHA256, ImageBinary)
VALUES (#{driver}, #{source}, #{title}, 'NA', #{imgSrc}, #{fileType}, #{fileName}, #{lastModified}, #{fileSize}, #{md}, #{sha}, #{binary} )" )
However, I am getting an Error message: 37000 (102) [Microsoft][ODBC SQL Server Driver][SQL Server]Incorrect syntax near ','. Which could be a little more helpful considering the number of commas involved. Nevertheless, having looked and looked I simple can't see the problem !!
So to the questions:
Can you detect the syntax error that is being reported?
I would like to insert NULL instead of 'NA' - but have no idea how to do that in ruby. How is it done?
EDIT:
Could be a problem with the DB Schema.
The physical DB has FileSize as an int. So I updated the code to insert #{fileSize.to_i} but the ImageBinary is a varbinary(MAX) - perhaps I could write the file out as HEX to a string? What do you think?

Answer 1

To debug, try looking at the expanded string. You can puts, log, or raise.
sql = "INSERT INTO prowlerRunningResults(ProwlerDriver, SourceURL, Title, DestinationURL, FileSource, FileType, FileName, LastModified, FileSize, HashMD5, HashSHA256, ImageBinary)
VALUES (#{driver}, #{source}, #{title}, 'NA', #{imgSrc}, #{fileType}, #{fileName}, #{lastModified}, #{fileSize}, #{md}, #{sha}, #{binary} )"
puts sql
logger.info sql
raise sql
You probably forgot some single quotes for some string data.