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sql.py
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232 lines (135 loc) · 5.92 KB
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import mysql.connector as connector
def create_db(dbname):
db = connector.connect(host="localhost", user="root", password="root")
cursor = db.cursor()
cursor.execute("CREATE DATABASE IF NOT EXISTS %s" %dbname)
db.commit()
db.close()
def create_table(dbname, table_name, structure):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("CREATE TABLE IF NOT EXISTS %s (%s);" %(table_name, structure))
db.commit()
db.close()
def drop_column(dbname, table_name, column_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("ALTER TABLE %s DROP COLUMN %s;" %(table_name, column_name))
db.commit()
db.close()
def create_column(dbname, table_name, column_name, column_type):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("ALTER TABLE %s ADD %s %s;" %(table_name, column_name, column_type))
db.commit()
db.close()
def insert_data(dbname, table_name, values):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("INSERT INTO %s VALUES (%s);" %(table_name, values))
db.commit()
db.close()
def update_data(dbname, table_name, value, where):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
if where == -1:
cursor.execute("UPDATE %s SET %s;" %(table_name, value))
else:
cursor.execute("UPDATE %s SET %s WHERE %s;" %(table_name, value, where))
db.commit()
db.close()
def show_databases():
db = connector.connect(host="localhost", user="root", password="root")
cursor = db.cursor()
cursor.execute("SHOW DATABASES")
result = cursor.fetchall()
db.close()
return result
def show_table(dbname):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("SHOW TABLES")
result = cursor.fetchall()
db.close()
return result
def describe(dbname, table_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("DESCRIBE %s" %table_name)
result = cursor.fetchall()
db.close()
return result
def delete_data(dbname, table_name, where):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("DELETE FROM %s WHERE %s;" %(table_name, where))
db.commit()
db.close()
def add_primary_key(dbname, table_name, column_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("ALTER TABLE %s ADD PRIMARY KEY (%s);" %table_name, column_name)
db.commit()
db.close()
def delete_primary_key(dbname, table_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("ALTER TABLE %s DROP PRIMARY KEY;" %table_name)
db.commit()
db.close()
def aggregate(dbname, table_name, column_name, function):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("SELECT %s(%s) FROM %s;" %(function, column_name, table_name))
result = cursor.fetchall()
db.close()
return result
def drop_db(dbname):
db = connector.connect(host="localhost", user="root", password="root")
cursor = db.cursor()
cursor.execute("DROP DATABASE IF EXISTS %s" %dbname)
db.commit()
db.close()
def drop_table(dbname, table_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("DROP TABLE IF EXISTS %s" %table_name)
db.commit()
db.close()
def drop_column(dbname, table_name, column_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("ALTER TABLE %s DROP COLUMN %s" %(table_name, column_name))
db.commit()
db.close()
def select(dbname, table_name, column_name, where):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
if where == "":
cursor.execute("SELECT %s FROM %s;" %(column_name, table_name))
else:
cursor.execute("SELECT %s FROM %s WHERE %s;" %(column_name, table_name, where))
result = cursor.fetchall()
db.close()
return result
def truncate_table(dbname, table_name):
db = connector.connect(host="localhost", user="root", password="root", database=dbname)
cursor = db.cursor()
cursor.execute("USE %s" %dbname)
cursor.execute("TRUNCATE TABLE %s" %table_name)
db.commit()
db.close()