Enhance query tests for comprehensive enum zero validation coverage

- Add SQL mode setup (STRICT_TRANS_TABLES vs non-strict)
- Test multiple row scenarios with proper row numbering
- Test enum with explicit empty string handling
- Add non-strict mode comparison testing
- Reproduce exact GitHub issue #9425 scenarios

Author: elianddb

enginetest/queries/script_queries.go

@@ -9029,23 +9029,62 @@ where
 		},
 	},
 	{
-		// This is with STRICT_TRANS_TABLES or STRICT_ALL_TABLES in sql_mode
+		// Test enum validation with zero values in strict mode - GitHub issue #9425
 		Skip:    false,
-		Name:    "enums with zero",
+		Name:    "enums with zero strict mode",
 		Dialect: "mysql",
 		SetUpScript: []string{
+			"set sql_mode = 'STRICT_TRANS_TABLES';",
 			"create table t (e enum('a', 'b', 'c'));",
+			"create table t_empty (e enum('', 'a', 'b'));", // enum with explicit empty string
 		},
 		Assertions: []ScriptTestAssertion{
 			{
 				Query: "insert into t values (0);",
-				// Fixed: should now be truncated error in strict mode
+				ExpectedErrStr: "Data truncated for column 'e' at row 1",
+			},
+			{
+				Query: "insert into t values (1), (0);",
+				ExpectedErrStr: "Data truncated for column 'e' at row 2",
+			},
+			{
+				Query: "insert into t values (0), (0);",
 				ExpectedErrStr: "Data truncated for column 'e' at row 1",
 			},
 			{
 				Query:       "create table tt (e enum('a', 'b', 'c') default 0)",
 				ExpectedErr: sql.ErrInvalidColumnDefaultValue,
 			},
+			{
+				// Test enum with explicit empty string - should allow 0
+				Query:    "insert into t_empty values (0);",
+				Expected: []sql.Row{{}},
+			},
+			{
+				Query:    "select e from t_empty;",
+				Expected: []sql.Row{{""}},
+			},
+		},
+	},
+	{
+		// Test enum zero behavior in non-strict mode for comparison
+		Skip:    false,
+		Name:    "enums with zero non-strict mode",
+		Dialect: "mysql",
+		SetUpScript: []string{
+			"set sql_mode = '';", // non-strict mode
+			"create table t (e enum('a', 'b', 'c'));",
+		},
+		Assertions: []ScriptTestAssertion{
+			{
+				// In non-strict mode, 0 should be allowed and convert to empty string
+				Query:    "insert into t values (0);",
+				Expected: []sql.Row{{}},
+			},
+			{
+				Query:    "select e from t;",
+				Expected: []sql.Row{{""}},
+			},
 		},
 	},
 	{