Python – thesql LOAD DATA INFILE with auto-increment primary key

importload-data-infileMySQLpython

I am trying to load a data file into mysql table using "LOAD DATA LOCAL INFILE 'filename' INTO TABLE 'tablename'".

The problem is the source data file contains data of every fields but the primary key is missing ('id' column). I add a unique id field while I create the database but now I need to import the data into the table starting from the next field and auto increment the id field while importing. 

def create_table():
            cursor.execute ("""
                    CREATE TABLE variants
                    (
                    id integer(10) auto_increment primary key,
                    study_no CHAR(40),
                    other fields.....


                    )
                    """)

here is my LOAD query

query1= "LOAD DATA LOCAL INFILE '"+currentFile+"' INTO TABLE variants FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n'"

any ideas?

Summary:
create a table with an additional id field that would auto increment
load data (20 columns) into the table of 21 fields skipping the id field
let the id field automatically populate with an auto increment index.

Best Answer

Specify a column list:

By default, when no column list is provided at the end of the LOAD DATA INFILE statement, input lines are expected to contain a field for each table column. If you want to load only some of a table's columns, specify a column list:

LOAD DATA INFILE 'persondata.txt' INTO TABLE persondata (col1,col2,...);

http://dev.mysql.com/doc/refman/5.1/en/load-data.html

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