Hello all trying to update a table with utl input file

Question

Hi all
please kindly help me with the below :
i have a table having 100 rows ,where i have to update the vxxx_DESC column from teh input file ,when the xxx_CODE is equal to vxxx_CODE from teh input file which is 3 didgit numeric format like the below :
exmp csv nput fie: where i have some duplicate records in it.
238,FKP
208,DKK
242,FJD
978,EUR
978,EUR
978,EUR
953,XPF
978,EUR
950,XAF
from the below script, in the log file its writing for me like -
Total Records present in Input file : 275
Total Records updated sucessfully in table : 186
But the update count is wrong whihc is more than the existing records. how do i get the exact update count avoiding the duplicates from the input file.
Please kindly help.
DECLARE
finfile UTL_FILE.file_type;
flogfile UTL_FILE.file_type;
vglobal_name VARCHAR2 (300) := NULL;
vlogfile_PATH VARCHAR2 (500) := NULL;
vINFILE_PATH VARCHAR2(100) := NULL;
vinfile_name VARCHAR2 (400) := 'INPUTFILE.csv';
vlogfile_name VARCHAR2 (500) := 'INPUTFILE.log';
vxxx_CODE CUN_CODE.xxx_CODE%TYPE :=NULL;
vxxx_DESC CUN_CODE.xxx_DESC%TYPE :=NULL;
vinput_rec VARCHAR2 (500) := NULL;
ntotal_rec NUMBER (20) := 0;
nUPD_rec NUMBER (20) := 0;
BEGIN
DBMS_OUTPUT.ENABLE (50000);
IF INSTR(vGlobal_name,'RAMAN') > 0
THEN
vLOGFILE_PATH := '/home/log/';
vINFILE_PATH := '/home/rpts/';
ELSE
DBMS_OUTPUT.PUT_LINE('Incorrect DB instance, so exiting from: ' || vGlobal_name);
RETURN;
END IF;
BEGIN
flogfile := UTL_FILE.fopen (vlogfile_PATH, vlogfile_name, 'W');
EXCEPTION
WHEN OTHERS
THEN
DBMS_OUTPUT.put_line ( 'ERROR WHILE OPENENING LOG FILE : '
|| SUBSTR (SQLERRM, 1, 200)
END;
BEGIN
finfile := UTL_FILE.fopen (vINFILE_PATH ,vinfile_name, 'R');
LOOP
vxxx_CODE :=null;
vxxx_DESC :=null;
BEGIN
UTL_FILE.get_line (finfile, vinput_rec);
vinput_rec:=TRIM(vinput_rec);
ntotal_rec := ntotal_rec + 1;
vxxx_CODE := SUBSTR(vinput_rec,1,INSTR(vinput_rec,',',1,1)-1);
vxxx_DESC := SUBSTR(vinput_rec, INSTR(vinput_rec,',',1,1)+1);
BEGIN
UPDATE CUN_CODE
SET xxx_CODE= vxxx_CODE
WHERE xxx_DESC= vxxx_DESC ;
nUPD_rec := nUPD_rec+SQL%ROWCOUNT;
EXCEPTION
WHEN OTHERS
THEN
UTL_FILE.put_line
(flogfile,
'ERROR FOR WHILE UPDATING : '
|| vxxx_CODE
|| SUBSTR (SQLERRM, 1, 250)
END;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
UTL_FILE.put_line
(flogfile,
'No more records in the input file.So Exiting the update :'
EXIT;
WHEN OTHERS
THEN
UTL_FILE.put_line
(flogfile,
'ERROR WHILE READING FROM INFILE. '
|| SUBSTR (SQLERRM, 1, 250)
EXIT;
END;
END LOOP;
UTL_FILE.put_line (flogfile,
'Total Records present in Input file : ' || ntotal_rec
UTL_FILE.put_line (flogfile,
'Total Records updated sucessfully in table : ' || nUPD_rec
DBMS_OUTPUT.PUT_LINE('Total Records updated in table : ' || nUPD_rec);
DBMS_OUTPUT.PUT_LINE('Total Records present in Input file : ' || ntotal_rec);
EXCEPTION
WHEN OTHERS
THEN
UTL_FILE.put_line (flogfile,
'ERROR WHILE OPENING INFILE '
|| vinfile_name
END;
EXCEPTION
WHEN OTHERS
THEN
DBMS_OUTPUT.put_line ( 'ERROR WHILE GETTING GLOBAL NAME'
|| SUBSTR (SQLERRM, 1, 250)
END;
<<skip_loop>>
IF UTL_FILE.is_open (finfile)
THEN
UTL_FILE.fclose (finfile);
END IF;
IF UTL_FILE.is_open (flogfile)
THEN
UTL_FILE.fclose (flogfile);
END IF;
EXCEPTION
WHEN OTHERS
THEN
DBMS_OUTPUT.put_line ( 'ERROR WHILE ACCESSING DB '
|| SUBSTR (SQLERRM, 1, 250)
END;
/

Answer 1

975482 wrote:
i have a table having 100 rows ,where i have to update the vxxx_DESC column from teh input file ,when the xxx_CODE is equal to vxxx_CODE from teh input file which is 3 didgit numeric format Looks like your code does exactly the opposite :
UPDATE CUN_CODE
SET xxx_CODE= vxxx_CODE
WHERE xxx_DESC= vxxx_DESC ;Additional suggestions :
1) create a directory object pointing to the location of your input file
2) create an external table to read the file
3) use a single UPDATE or MERGE statement to do the job, instead of this mess