fix(mysql): remove not-allowed frame clause from rank window function

ibis/backends/mysql/compiler.py

@@ -22,7 +22,7 @@
     rewrite_last_to_last_value,
 )
 from ibis.common.patterns import replace
-from ibis.expr.rewrites import p, rewrite_sample
+from ibis.expr.rewrites import p, rewrite_sample, y
 
 MySQL.Generator.TRANSFORMS |= {
     sge.LogicalOr: rename_func("max"),
@@ -56,6 +56,13 @@ def rewrite_limit(_, **kwargs):
     return _
 
 
+@replace(p.WindowFunction(p.MinRank | p.DenseRank, y @ p.WindowFrame(start=None)))
+def exclude_unsupported_window_frame_from_rank(_, y):
+    return ops.Subtract(
+        _.copy(frame=y.copy(start=None, end=0, order_by=y.order_by or (ops.NULL,))), 1
+    )
+
+
 @public
 class MySQLCompiler(SQLGlotCompiler):
     __slots__ = ()
@@ -68,6 +75,7 @@ class MySQLCompiler(SQLGlotCompiler):
         rewrite_first_to_first_value,
         rewrite_last_to_last_value,
         exclude_unsupported_window_frame_from_ops,
+        exclude_unsupported_window_frame_from_rank,
         exclude_unsupported_window_frame_from_row_number,
         rewrite_empty_order_by_window,
         *SQLGlotCompiler.rewrites,