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hey guys welcome back to our channel so this channel every data science is all about trying to learn the different concepts involved data science were practicing a lot of questions in this video I am going to solve this question on lead code regarding reformat Department triple and try to walk you through how we can develop solutions to such problems the difficulty level of this question is easy and this question has been asked in Amazon interviews over the past six months a couple of times right okay lets Jump Right In we are given a table called Department with three different columns ID Revenue month and these are the data types the combined columns ID month is the primary key of this table the table has information about revenue of each department per month okay the month has values Jan Feb March up till December okay we are asked to write a SQL query to reformat the table such that there is the department ID column and a revenue column for each month okay order of the result doe