Is it possible to write a result of query to a CLOB field in another table

Question

Hi all,
I have a table with 50 columns which will ideally have around 250,000 rows. I want to select all the rows from this table and insert the result in to another
table's CLOB or BLOB column. ( I think CLOB is preferred for strings !!)
f.i
Table1 : SELECT ID, COL1||','||COL2||','||COL3||','||COL4||','||COL5 FROM TF_TEMPREP
ORDER BY COL1
will have the output
A001, 1,ABN LAYOUT,01-APR-11,30-APR-11,REMARK1
A001, 2,CTS ,01-APR-11,10-APR-11,REMARK2
A001, 3,BTS,01-APR-11,20-APR-11,REMARK3
A001, 4,CWWS,01-JAN-11,31-JAN-11,REMARK4
A001, 5,ZYNC,01-MAR-11,31-MAR-11,REMARK5
I would like to store these rows into another table (TF_TEMPREP_OUTPUT) CLOB/BLOB column ,
so the table TF_TEMPREP_OUTPUT will have one row with all the rows from TF_TEMPREP in the CLOB/BLOB column.
TF_TEMPREP_OUTPUT will have column OUTPUTID (VARCHAR2) , OUTPUTDATA (CLOB DATATYPE)
Will this be possible !!.
Thanks in advance
Regards
Murali

Answer 1

Hi all
Thanks for your reply,
The reason we would like to store the data in a CLOB file is that,
Currently we are fetching the data from the table TF_TEMPREP and the recordset is passed into a function and writing the ouput to a CSV file in the local drive using the VB (front end application). once the process is completed, the temporary table will be deleted. this is used only for printing purpose.
we are using the VB function
Public Function RecordsetToCSV(rsData As ADODB.Recordset, pFileSeparator As String, Optional ShowColumnNames As Boolean = True, Optional NULLStr As String = "") As String
Dim k As Long
Dim RetStr As String
On Error GoTo Errh
If ShowColumnNames Then
For k = 0 To rsData.Fields.Count - 1
RetStr = RetStr & pFileSeparator & """" & rsData.Fields(k).Name & """"
Next k
RetStr = Mid(RetStr, 2) & vbNewLine
End If
rsData.MoveFirst
RetStr = RetStr & """" & rsData.GetString(adClipString, -1, """" & pFileSeparator & """", """" & vbNewLine & """", NULLStr)
RetStr = Left(RetStr, Len(RetStr) - 3)
RecordsetToCSV = RetStr
Exit Function
Errh:
RecordsetToCSV = ""
Exit Function
End Function
But in this operation, as the number of records is more the system often throws out with the message "Not enough storage is available to complete this operation.". The Local HD is having around 50GB of free space. when we have less number of records (say around 30-40K), the above process works perfectly.
Storing the File in the database server will be an issue, as the database server will be in a different location and it will not be possible/advisable to access the
local directory thru mapped directory in the database server.
our plan was if the data is available in a clob field, then we could try to read the clob and write to a file in the local directory thru our VB application itself. Not sure, will this also gives a same error as it was giving when reading from the table?.
Hope I have clarified what we are aiming at.
Regards
Murali