Reading a SQL file

Interacting with a SQL database through pandas requires the sqlalchemy dependency to be installed.

First, let's define the engine from which connection parameters can be obtained:

engine = create_engine('sqlite:///:memory:')

Now, let's read the data_sql table from the SQL database:

with engine.connect() as conn, conn.begin():
    print(pd.read_sql_table('data_sql', conn))

This results in the following output:

Output of read_sql_table

The read_sql_table() function reads an entire table for the given table name. A specific column can be set as the index when reading:

pd.read_sql_table('data_sql', engine, index_col='index')

This results in the following output:

Output of read_sql_table with indexing

The columns argument lets us choose specific columns when reading data by passing the column names as a list. Any...