@@sql_mode = 'NO_BACKSLASH_ESCAPES' causes more headaches than it solves
Fixed MySQL WITH ROLLUP test case.
[#2665] Implement SPI for RenderContext and BindContext listening to
allow for custom SQL transformation

 * INSERT statement refactoring to correctly implement clause events.
[#2665] Added proper clause events for INSERT .. SELECT
[#2665] Added test case for INSERT .. RETURNING
[#2665] Added support for INSERT .. ON DUPLICATE KEY UPDATE