Hello, I'm trying to find the best method to create new tables in SQLite derived from a select statement on an existing SQLite table. I've currently tried the two methods, one in Python and one in the SQLite command shell (both illustrated below). Although I generally prefer to code in Python, I find it much slower. I also find the SQLite command line much slower when I use the INSERT INTO ... SELECT query. What are best coding practices in building derived SQLite tables?
Python example: conn = sqlite3.connect("example.db') c = conn.cursor() query = ''' CREATE TABLE clients ( cust_id int, year int, clerk_id int, sales decimal(30,4) PRIMARY KEY (cust_id, year) );''' c.execute(query) query = ''' ATTACH '%s' AS panel;''' % ( 'panel.db' ) c.execute(query) query = ''' INSERT INTO clients ( cust_id, year, clerk_id, sales) SELECT cust_id, year, clerk_id, sales FROM panel.panel WHERE sales >= 30000;'' c.execute(query) conn.commit() SQLite command shell example: ATTACH 'panel.db' AS panel; .output ../temp/clients.txt SELECT cust_id, year, clerk_id, sales FROM panel.panel WHERE sales >= 30000; CREATE TABLE clients ( cust_id int, year int, clerk_id int, sales decimal(30,4) PRIMARY KEY (cust_id, year) ); .import ../temp/clients.txt clients _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users