https://pysparktutorials.wordpress.com/string-functions/
http://h2database.com/html/functions.html
https://stevestedman.com/2015/05/tsql-join-types-poster-version-4-1/
https://www.javatpoint.com/mysql-tutorial
https://github.com/spark-examples/pyspark-examples
https://docs.microsoft.com/en-us/azure/data-factory/lab-data-flow-data-share
https://ajaytech.co/python-challenges/
https://docs.google.com/document/d/1mjkUvgqMjN0MmOnhsQDgAX1VdKVELVQV/edit
<<<<<<<<<< All the importent question >>>>>>>>>>>>>
1-How to swap the value?
<<<<a=10 b=20 a,b=b,a>>>>
2-Find the occurance in in given string ?
3-Find the second largest value given in list?
4-What is the difference in between the list and tuple ?
5-Find the occurance in the bethout using count and counter and regex ?
6-What is the list, dict string,tuple and it operation?
most importent question : https://www.geeksforgeeks.org/python-element-with-largest-frequency-in-list/?ref=lbp
7-What is largest value in the list?
8-What is class and method and instance ?
9-What is the inheritance and polymorphisam?
10-Give one example
11-What is the palaindrom ?
##HOW TO CONNECT DATA BASE WITH PYTHON
pip install mysql-connector-python
import mysql.connector
mydb = mysql.connector.connect( host="localhost", user="yusername", passwd="password", database="database_name" )
mycursor = mydb.cursor()
mycursor.execute("CREATE TABLE customers (name VARCHAR(255), address VARCHAR(255))")
mycursor.execute("SHOW TABLES")
mycursor.execute("INSERT INTO customers (name, address) VALUES ('John', 'Highway 21')")
mydb.commit() # Use this command after insert, update, delete commands
https://github.com/khanhnamle1994/cracking-the-data-science-interview