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Within this tutorial, you've figured out how you can use MySQL UPDATE statement to update knowledge within a database table.
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UPDATE returns the amount of rows which were in fact modified. The mysql_info() C API purpose returns the quantity of rows which were matched and updated and the number of warnings that transpired in the UPDATE.
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For those who update a column which has been declared NOT NULL by setting to NULL, an mistake occurs if demanding SQL manner is enabled; otherwise, the column is ready towards the implicit default benefit for your column data form and the warning count is incremented.
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to restrict the scope with the UPDATE. A Restrict clause is really a rows-matched restriction. The statement stops as soon as it's got identified row_count
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