1. Create a table:
SQL$>$ desc test;
 Name                      Null?    Type
 ------------------------- -------- --------------
 PIN                                NUMBER
 BALANCE                            NUMBER
 
 | 
2. Create controlfile.txt:
load data
infile 'data.csv'
into table test
fields terminated by "," optionally enclosed by '"'
(
    PIN, BALANCE
)
 | 
3. From the oracle server, run:
sqlldr username/password@ control=controlfile.txt
 
 | 
4. Check the result:
SQL> select * from test;
    PIN     BALANCE    
------- -----------
      1        1000
      2       23456
      3          -1
 | 
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