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29 lines
758 B
Python
29 lines
758 B
Python
# 10/28/2013 Sebastian Raschka
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# Syntax basics for querying sqlite3 data bases
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import sqlite3
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# open existing database
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conn = sqlite3.connect('zinc_db1.db')
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c = conn.cursor()
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# print all lines ordered by number of non_rot_bonds
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for row in c.execute('SELECT * FROM zinc_db1 ORDER BY non_rot_bonds'):
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print row
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# print all lines that are purchasable and have <= 7 rotatable bonds
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t = ('YES',7,)
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for row in c.execute('SELECT * FROM zinc_db1 WHERE purchasable=? AND non_rot_bonds <= ?', t):
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print row
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# print all lines that are purchasable and have <= 7 rotatable bonds
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t = ('YES',7,)
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c.execute('SELECT * FROM zinc_db1 WHERE purchasable=? AND non_rot_bonds <= ?', t)
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rows = c.fetchall()
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for r in rows:
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print r
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# close connection
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conn.close()
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