How to read data from text file with comma separated values and insert into temp table using in stored procedure - oracle

Question

FIle name emp.txt - the text file contains data like this:
emp_no,emp_EXPIRY_DATE,STATUS
a123456,2020-07-12,A
a123457,2020-07-12,A
I want to insert data into a temp table using a stored procedure.

Answer 1

Which database do you use? "Oracle" SQL Developer looks like "Oracle" (of course), but - code you posted as a comment isn't Oracle.
Anyway, if it was, then doing what you plan to do would require UTL_FILE package. CSV file should be put into a directory (usually on the database server) which is a source for directory (as an Oracle object); user that is supposed to load data should have read (and write?) privileges on it.
Alternatively, you could use the CSV file as an external table. That option might be simpler as it allows you to write ordinary SELECT statements against it, i.e. read data from it and insert into the target table that resides in an Oracle database. This option also requires the "directory" stuff.
Or, if you want to do that locally, consider using SQL*Loader; create a control file and load data. This option might be extremely fast, way faster than previous options. You won't see any difference for small files, but - for a lot of data - this might be your choice.
A SQL*Loader example:
Test table:
SQL> create table test
2 (emp_no varchar2(10),
3 emp_expiry_date date,
4 status varchar2(1));
Table created.
Control file:
options (skip=1)
LOAD DATA
infile emp.txt
replace
INTO TABLE test
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
emp_no,
emp_expiry_date "to_date(:emp_expiry_date, 'yyyy-dd-mm')",
status
)
Loading session & the result:
SQL> alter session set nls_date_Format = 'yyyy-mm-dd';
Session altered.
SQL> $sqlldr scott/tiger control=test13.ctl log=test13.log
SQL*Loader: Release 11.2.0.2.0 - Production on Sri Pro 11 21:02:44 2019
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Commit point reached - logical record count 1
Commit point reached - logical record count 2
SQL> select * from test;
EMP_NO EMP_EXPIRY S
---------- ---------- -
a123456 2020-12-07 A
a123457 2020-12-07 A
SQL>