Sorting a table or column in Python and SQLite

When you're working with data, sorting does tend to come up a lot. You may need to sort your students alphabetically (by name), or perhaps you would like to sort them by points, ascending or descending, to see who has come out on top.

Code

import sqlite3

#This functions demonstrates how to sort using the ORDER BY clause
#data can be sorted in ascending or descending order based on one or more columns

def sorting():
    conn=sqlite3.connect('test.db')
    #change the ASC at the end to DESC and ...yes, it will sort by descending order instead!
    myrows=conn.execute("SELECT * from STUDENT ORDER BY POINTS ASC;")
    print("Sorting from the least points to the most")
    print("===========================")
    for row in myrows:
        print(row)
        
def search_for_phrase():
    conn=sqlite3.connect('test.db')
    myrows=conn.execute("SELECT * from STUDENT WHERE POINTS GLOB '*00*'")
    for row in myrows:
        print(row)

def the_where_clause():
    conn=sqlite3.connect('test.db')
    myrows=conn.execute("SELECT * from STUDENT WHERE POINTS >= 19000;")
    print("The students who have achieved points above 19000 are:")
    print("=======================================")
    for row in myrows:
        print(row)
    conn.close()

def deleting():
    conn=sqlite3.connect('test.db')
    conn.execute("DELETE from STUDENT where ID = 3;")
    conn.commit()
    print("Total number of rows deleted :", conn.total_changes)

    cursor = conn.execute("SELECT id, name, comment, points from STUDENT")
    for row in cursor:
     print("ID = ", row[0])
     print("NAME = ", row[1])
     print("COMMENTS = ", row[2])
     print("POINTS = ", row[3], "\n")
     print("====Your request to delete has been completed=====")
    conn.close()

def update_database():
    conn = sqlite3.connect('test.db')
    conn.execute("UPDATE STUDENT set POINTS = 99000.00 where ID = 4")
    conn.commit
    print("Total number of rows updated :", conn.total_changes)

    cursor = conn.execute("SELECT id, name, comment, points from STUDENT")
    for row in cursor:
       print ("ID = ", row[0])
       print ("NAME = ", row[1])
       print ("COMMENT = ", row[2])
       print ("POINTS = ", row[3], "\n")

    print("===Request complete===")
    conn.close()

def create_table():
    conn = sqlite3.connect('test.db')
    print("Opened database")
    conn.execute('''CREATE TABLE STUDENT
         (ID INT PRIMARY KEY     NOT NULL,
         NAME           TEXT    NOT NULL,
         AGE            INT     NOT NULL,
         COMMENT        CHAR(50),
         POINTS         REAL);''')
    print("A database table has been created now")
    conn.close()

def add_records():
    conn=sqlite3.connect('test.db')
    
    conn.execute("INSERT INTO STUDENT (ID,NAME,AGE,COMMENT,POINTS) \
          VALUES (1, 'Jonathan', 14, 'One of our top students!', 20000.00 )");

    conn.execute("INSERT INTO STUDENT (ID,NAME,AGE,COMMENT,POINTS) \
          VALUES (2, 'Ruth', 15, 'An all rounder - wonderful!', 15000.00 )");

    conn.execute("INSERT INTO STUDENT (ID,NAME,AGE,COMMENT,POINTS) \
          VALUES (3, 'Nick', 14, 'Lacks drive and motivation. Rude.', 2.00 )");

    conn.execute("INSERT INTO STUDENT (ID,NAME,AGE,COMMENT,POINTS) \
          VALUES (4, 'Pigachee', 15, 'No.1 at everything.Simply Amazing!', 65000.00 )");

    conn.commit()
    print("Records have been created")
    conn.close()

def fetch_display():
    conn = sqlite3.connect('test.db')
    cursor = conn.execute("SELECT id, name, comment, points from STUDENT")
    for row in cursor:
       print ("ID=" ,row[0])
       print ("NAME = ", row[1])
       print ("COMMENT = ", row[2])
       print ("POINTS = ", row[3], "\n")

    print ("Operation has been completed as per your request")
    conn.close()

sorting()