SQL COPY TABLE Syntax. The basic syntax for copying one table to another is as follows. SELECT * INTO <destination_table> from <source_table>; HERE, <destination_table> – Where you want to copy the data. <source_table> – The source table from where you want to copy.How to count duplicates in SQL?
To find duplicate values in SQL, you must first define your criteria for duplicates and then write the query to support the search. Our sample table, called users, shows our Facebook friends and their relevant information. This information includes first and last names, gender and the date when the friend request was accepted.