Mercurial Hosting > traffic-intelligence
changeset 740:867bab9f317a dev
function to check the existence of tables
| author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
|---|---|
| date | Thu, 27 Aug 2015 23:51:18 -0400 |
| parents | 25e78d756823 |
| children | 5b91b8d97cf3 |
| files | python/storage.py |
| diffstat | 1 files changed, 10 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/python/storage.py Thu Aug 20 15:30:19 2015 -0400 +++ b/python/storage.py Thu Aug 27 23:51:18 2015 -0400 @@ -34,6 +34,16 @@ except sqlite3.OperationalError as error: printDBError(error) +def tableExists(filename, tableName): + 'indicates if the table exists in the database' + try: + connection = sqlite3.connect(filename) + cursor = connection.cursor() + cursor.execute('SELECT COUNT(*) FROM SQLITE_MASTER WHERE type = \'table\' AND name = \''+tableName+'\'') + return cursor.fetchone()[0] == 1 + except sqlite3.OperationalError as error: + printDBError(error) + def createIndex(connection, tableName, columnName, unique = False): '''Creates an index for the column in the table I will make querying with a condition on this column faster'''