DBF SQL standard to escape column names?

Question

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VB

SQLInsertCommand = "INSERT INTO " & strFileName2 & "_ 
 (TRANDATE,[HOUR],SALES,TRANCNT,TENTNAME,TERMNUM) " & _
 " VALUES('" & Format(CDate(dr("dateid")), "Short Date").ToString & _
 "','" & "" & dr("dhour") & "'," & _
 Format(dr("amt"), "########0.00;-########0.00") & "," _
 & Val("" & dr("ctrno")) & ",'" & _
 LeftX(TenantCode & "-" & TerminalNumber, 15) & "'," & _
 "" & dr("tenantcode") & ")"
                
Dim cmd1 As New OleDb.OleDbCommand(SQLInsertCommand, dBaseConnectionB)
                
cmd1.ExecuteNonQuery()

Error:

The INSERT INTO statement contains the following unknown field name: 'HOUR'. Make sure you have typed the name correctly, and try the operation again.

What I have tried:

I had used also the backticks(`), but still I got the same error.

Posted 1-Nov-23 17:10pm

ramderf.0326

Updated 4-Nov-23 4:46am

Deeksha Shenoy

v2

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M Imran Ansari · Answer 1 · 2023-11-01T20:52:00

The error message is clear that tha column name 'HOUR' is not being recognized in the table or not spelled correctly, you are trying to insert data into.
The INSERT INTO statement contains the following unknown field name: 'HOUR'. Make sure you have typed the name correctly
Try to use parameterized queries will help mitigate SQL injection risks and make the code more readable and maintainable instead of string concatenation.

Dave Kreskowiak · Answer 2 · 2023-11-04T05:32:00

Just to reinforce the point that may have been missing, that is some horrifyingly bad code. It's near impossible for a newb to debug, isn't supportable n any environment, and would give code and security reviewers heart attacks.

Google for "Sql injection attack" to find out why your code is so bad and what can be done about it.

Use parameterized queries and you get closer to solving all of those problems. Google for "VB.NET Parameterized queries" for more information on how to do this.

DBF SQL standard to escape column names?

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