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MySQL 8.0 Reference Manual  /  ...  /  Cursor DECLARE Syntax

Pre-General Availability Draft: 2017-05-29

14.6.6.2 Cursor DECLARE Syntax

DECLARE cursor_name CURSOR FOR select_statement

This statement declares a cursor and associates it with a SELECT statement that retrieves the rows to be traversed by the cursor. To fetch the rows later, use a FETCH statement. The number of columns retrieved by the SELECT statement must match the number of output variables specified in the FETCH statement.

The SELECT statement cannot have an INTO clause.

Cursor declarations must appear before handler declarations and after variable and condition declarations.

A stored program may contain multiple cursor declarations, but each cursor declared in a given block must have a unique name. For an example, see Section 14.6.6, “Cursors”.

For information available through SHOW statements, it is possible in many cases to obtain equivalent information by using a cursor with an INFORMATION_SCHEMA table.


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