Fixing issue from go-gitea/gitea #5728 (#1192)

* Format boolean values to true/false even when it is returned as byte-slice,
* Fix the sequence generation, the proper sequence name is used (instead of 'table_id_seq'), and fix the next value be max+1 always

Author: gzsombor

engine.go

@@ -527,7 +527,11 @@ func (engine *Engine) dumpTables(tables []*core.Table, w io.Writer, tp ...core.D
 				} else if col.SQLType.IsNumeric() {
 					switch reflect.TypeOf(d).Kind() {
 					case reflect.Slice:
-						temp += fmt.Sprintf(", %s", string(d.([]byte)))
+						if col.SQLType.Name == core.Bool {
+							temp += fmt.Sprintf(", %v", strconv.FormatBool(d.([]byte)[0] != byte('0')))
+						} else {
+							temp += fmt.Sprintf(", %s", string(d.([]byte)))
+						}
 					case reflect.Int16, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Int:
 						if col.SQLType.Name == core.Bool {
 							temp += fmt.Sprintf(", %v", strconv.FormatBool(reflect.ValueOf(d).Int() > 0))
@@ -564,7 +568,7 @@ func (engine *Engine) dumpTables(tables []*core.Table, w io.Writer, tp ...core.D
 
 		// FIXME: Hack for postgres
 		if string(dialect.DBType()) == core.POSTGRES && table.AutoIncrColumn() != nil {
-			_, err = io.WriteString(w, "SELECT setval('table_id_seq', COALESCE((SELECT MAX("+table.AutoIncrColumn().Name+") FROM "+dialect.Quote(table.Name)+"), 1), false);\n")
+			_, err = io.WriteString(w, "SELECT setval('"+table.Name+"_id_seq', COALESCE((SELECT MAX("+table.AutoIncrColumn().Name+") + 1 FROM "+dialect.Quote(table.Name)+"), 1), false);\n")
 			if err != nil {
 				return err
 			}