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SPI_is_cursor_plan
Name
SPI_is_cursor_plan -- return true if a plan prepared bySPI_prepare can be used with SPI_cursor_openDescription
SPI_is_cursor_plan returns true if a plan prepared by SPI_prepare can be passed as an argument to SPI_cursor_open and false if that is not the case. The criteria are that the plan represents one single command and that this command is a SELECT without an INTO clause.
