fixing not equals

Author: James Cor

enginetest/queries/script_queries.go

@@ -7831,6 +7831,12 @@ where
 					{123},
 				},
 			},
+			{
+				Query:    "select * from t where i != (false or i);",
+				Expected: []sql.Row{
+					{123},
+				},
+			},
 		},
 	},
 	{

sql/analyzer/optimization_rules.go

@@ -246,11 +246,11 @@ func simplifyFilters(ctx *sql.Context, a *Analyzer, node sql.Node, scope *plan.S
 					return e.RightChild, transform.NewTree, nil
 				}
 
-				if isFalse(e.LeftChild) {
+				if isFalse(e.LeftChild) && types.IsBoolean(e.RightChild.Type()) {
 					return e.RightChild, transform.NewTree, nil
 				}
 
-				if isFalse(e.RightChild) {
+				if isFalse(e.RightChild) && types.IsBoolean(e.LeftChild.Type()) {
 					return e.LeftChild, transform.NewTree, nil
 				}