Sqlite3 tmp.sqlite '.mode line' 'select x, x+1, x*2, x=0, x=1 from t' Sqlite3 tmp.sqlite '.import -csv tmp.csv t' Then import: sqlite3 tmp.sqlite 'create table t(x integer)' but I wanted to make some quick edge case tests to understand better what works and what doesn't: import -csv with pre-existing integer column Other methods might require you delete the header either before or after importing the csv file. If you do it this way, you don't have to worry about headers in csv file being imported as data. SELECT "employee_id", "last_name", "first_name", "hire_date"įinally, we can execute SQL in alterTable.sql and drop the old renamed table $ sqlite3 mydb.sqliteĪt this point, the imported employee data should have the correct data types instead of the default text field.
INSERT INTO employees ("employee_id", "last_name", "first_name", "hire_date") Let's now create a SQL filed called alterTable.sql that would rename the table, create a new table, and copy the data into the new table.ĪLTER TABLE employees RENAME TO _employees_old You should now have employees.sql with the following schema: CREATE TABLE employees( Let's first get the employees schema from the database and save it to can use this to create a new script that would rename the table, create a new table, and copy the data into the new table. # unfortunately, sqlite assumes all fields are text fieldsĪt this point, the data is imported as text. # import data from 'employees.csv' into a SQLite table called 'employees' # create sqlite database called mydb.sqlite employee_id,last_name,first_name,hire_dateįirst, create a SQLite database called mydb.sqlite and import employees.csv into a SQLite table called employees.
So suppose I have an employees.csv file I want to import into SQLite database with the correct data types. Instead, you will need to rename the table, create a new table, and copy the data into the new table. However, it is my understanding that you cannot use the ALTER TABLE statement to modify a column in SQLite. So you need to perform some extra steps in order to set the correct data types. When importing csv files, SQLite assumes all fields are text fields.
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