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so before we go over all the ways data analysts use sql to clean data i want to formally introduce you to sql weamp;#39;ve talked about sql a lot already youamp;#39;ve seen some databases and some basic functions in sql and youamp;#39;ve even seen how sql can be used to process data but now letamp;#39;s actually define sql sql is structured query language that analysts use to work with databases data analysts usually use sql to do with large data sets because it can handle huge amounts of data and i mean trillions of rows thatamp;#39;s a lot of rows to wrap your head around so let me give you an idea about how much data that really is imagine a data set that contains the name of all 8 billion people in the world it would take the average person 101 years to read all 8 billion names sql can process this in seconds personally i think thatamp;#39;s pretty cool other tools like spreadsheets might take a really long time to process that much data which is one of the main reasons data