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Updating tables in sql from another table

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UPDATE summary_data SET current_category = (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id) WHERE EXISTS (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id); If you want to test your skills using the SQL UPDATE statement, try some of our practice exercises.These exercises allow you to try out your skills with the UPDATE statement.

updating tables in sql from another table-57updating tables in sql from another table-61updating tables in sql from another table-87

Although the question is very interesting, I have seen in many forum sites and made a solution using INNER JOIN with screenshots.The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.There are 3 syntaxes for the UPDATE statement depending on whether you are performing a traditional update or updating one table with data from another table.Thanks [email protected] Doe if you have a performance question ask a new question and supply details of the table sizes, structures, indexes and execution plans.I don't understand what you are asking in point 2 please edit your question and supply example table structures that demonstrate the issue you are asking [email protected] Doe: If you mean by column you mean a column value (in other words, a matching row) – when there is no matching row, no error is raised.You will be given questions that you need to solve.