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adding some clarifications around pandas #2

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adding some clarifications around pandas #2

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5 changes: 4 additions & 1 deletion _episodes/01-sql-intro2.md
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Expand Up @@ -41,6 +41,9 @@ The data was originated from a real dataset. We have modofied the dataset for th
import sqlite3 as sql
import pandas as pd
```

`sqlite3` will be included within a standard Python installation. `pandas` is not part of the [Python Standard Library](https://docs.python.org/3/library/index.html), but will normally be bundled with Anaconda.

2. in the next cell, create a connection to the database called conn
```
conn = sql.connect('soda.db')
Expand All @@ -51,7 +54,7 @@ q = '''
SELECT * FROM item_info;
'''
```
4. python has a built in function to [read sql](http://pandas.pydata.org/pandas-docs/version/0.20/generated/pandas.read_sql.html)
4. The pandas package in Python has a built in function to [read sql](http://pandas.pydata.org/pandas-docs/version/0.20/generated/pandas.read_sql.html).
The following code will execute the query and assign the result to a DataFrame variable called "df", and show the result (use .head(10) to show first 10 result, you can remove that part to show the full result):
```
df = pd.read_sql(q, conn)
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