Agility E Services Interview Questions and Answers

Tuples are immutable sequences of elements. A string can be converted to a tuple using the tuple() function.

• Tuples are similar to lists but are immutable

• Elements of a tuple are enclosed in parentheses ()

• A string can be converted to a tuple using the tuple() function

• Each character in the string becomes an element in the tuple

Left join is a type of join operation in SQL that returns all the rows from the left table and matching rows from the right table.

• Left join is performed using the 'left join' keyword in SQL

• In Python, left join can be performed using the 'merge' function from the pandas library

• Syntax: pd.merge(left_dataframe, right_dataframe, how='left', on='key_column')

• Example: pd.merge(df1, df2, how='left', on='id')