Updating views in mysql

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The name of the view must be distinct from the name of any other view, table, sequence, index or foreign table in the same schema.If specified, the view is created as a temporary view.

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[INTO 'file_name' export_options] [FROM table_references [WHERE where_definition] [GROUP BY [ASC | DESC], ...] [HAVING where_definition] [ORDER BY [ASC | DESC] ,...] [LIMIT [offset,] rows] [PROCEDURE procedure_name] [FOR UPDATE | LOCK IN SHARE MODE is escaped to make it easier to view with some pagers. or INSERT [LOW_PRIORITY | DELAYED] [IGNORE] [INTO] tbl_name [(col_name,...)] SELECT ...

is similar, but if a view of the same name already exists, it is replaced.

The new query must generate the same columns that were generated by the existing view query (that is, the same column names in the same order and with the same data types), but it may add additional columns to the end of the list.

This means that if you kill DELETE [LOW_PRIORITY | QUICK] FROM table_name [WHERE where_definition] [ORDER BY ...] [LIMIT rows] or DELETE [LOW_PRIORITY | QUICK] table_name[.*] [,table_name[.*] ...] FROM table-references [WHERE where_definition] or DELETE [LOW_PRIORITY | QUICK] FROM table_name[.*], [table_name[.*] ...] USING table-references [WHERE where_definition] clause will return zero as the number of affected records.

If you really want to know how many records are deleted when you are deleting all rows, and are willing to suffer a speed penalty, you can use a is faster. The first multi-table delete format is supported starting from My SQL 4.0.0.

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[INTO 'file_name' export_options] [FROM table_references [WHERE where_definition] [GROUP BY [ASC | DESC], ...] [HAVING where_definition] [ORDER BY [ASC | DESC] ,...] [LIMIT [offset,] rows] [PROCEDURE procedure_name] [FOR UPDATE | LOCK IN SHARE MODE]] is escaped to make it easier to view with some pagers. or INSERT [LOW_PRIORITY | DELAYED] [IGNORE] [INTO] tbl_name [(col_name,...)] SELECT ...is similar, but if a view of the same name already exists, it is replaced.The new query must generate the same columns that were generated by the existing view query (that is, the same column names in the same order and with the same data types), but it may add additional columns to the end of the list.This means that if you kill DELETE [LOW_PRIORITY | QUICK] FROM table_name [WHERE where_definition] [ORDER BY ...] [LIMIT rows] or DELETE [LOW_PRIORITY | QUICK] table_name[.*] [,table_name[.*] ...] FROM table-references [WHERE where_definition] or DELETE [LOW_PRIORITY | QUICK] FROM table_name[.*], [table_name[.*] ...] USING table-references [WHERE where_definition] clause will return zero as the number of affected records.If you really want to know how many records are deleted when you are deleting all rows, and are willing to suffer a speed penalty, you can use a is faster. The first multi-table delete format is supported starting from My SQL 4.0.0.

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