If you want to load data from a file into a table, you would use something like:
[tt]
LOAD DATA INFILE 'c:/data/file1.csv'
INTO TABLE tbl1
[/tt]
To insert data directly, you could use something like:
[tt]
INSERT tbl1 (fld1,fld2)
VALUES ('abc',123),('def',456)
However, it's not always that simple, depending on your situation.