Merge branch 'angela/setconversion' of https://github.com/dolthub/go-mysql-server into angela/emptystringset

Author: angelamayxie

enginetest/queries/script_queries.go

@@ -9819,6 +9819,7 @@ where
 				},
 			},
 			{
+				// https://github.com/dolthub/dolt/issues/9510
 				Skip:  true,
 				Query: "select s from t where s like 'a%' order by s;",
 				Expected: []sql.Row{
@@ -9909,6 +9910,7 @@ where
 				},
 			},
 			{
+				// https://github.com/dolthub/dolt/issues/9511
 				Skip:  true,
 				Query: "select s, cast(s as char) from t order by s;",
 				Expected: []sql.Row{
@@ -9918,6 +9920,7 @@ where
 				},
 			},
 			{
+				// https://github.com/dolthub/dolt/issues/9511
 				Skip:  true,
 				Query: "select s, cast(s as binary) from t order by s;",
 				Expected: []sql.Row{

sql/types/conversion.go

@@ -736,6 +736,9 @@ func GeneralizeTypes(a, b sql.Type) sql.Type {
 	return LongText
 }
 
+// TypeAwareConversion converts a value to a specified type, with awareness of the value's original type. This is
+// necessary because some types, such as EnumType and SetType, are stored as ints and require information from the
+// original type to properly convert to strings.
 func TypeAwareConversion(ctx *sql.Context, val interface{}, originalType sql.Type, convertedType sql.Type) (interface{}, error) {
 	if val == nil {
 		return nil, nil