diff --git a/toolkit/dbvendor/ivendor.go b/toolkit/dbvendor/ivendor.go
index bb91586e..350f5bc7 100644
--- a/toolkit/dbvendor/ivendor.go
+++ b/toolkit/dbvendor/ivendor.go
@@ -76,13 +76,16 @@ type Column struct {
 
 // Table defines a table
 type Table struct {
-	Name       string
-	Columns    []Column
-	BizColumns []Column
-	Pk         string
-	Joins      []string
+	TablePrefix string
+	Name        string
+	Columns     []Column
+	BizColumns  []Column
+	Pk          string
+	Joins       []string
 	// 父表
 	Inherited string
+	// 该表是否仅用于同步/复制数据
+	IsCopy bool
 }
 
 func String(tmplname, tmpl string, data interface{}, pf PlaceholderFormat) (string, error) {
diff --git a/toolkit/dbvendor/postgres/template.go b/toolkit/dbvendor/postgres/template.go
index 354f802e..44345aef 100644
--- a/toolkit/dbvendor/postgres/template.go
+++ b/toolkit/dbvendor/postgres/template.go
@@ -1,16 +1,16 @@
 package postgres
 
 var (
-	createTable = `CREATE TABLE "{{.Name}}" (
+	createTable = `CREATE TABLE IF NOT EXISTS {{if .TablePrefix }}"{{.TablePrefix}}".{{end}}"{{.Name}}" (
 {{- range $co := .Columns }}
-"{{$co.Name}}" {{$co.Type}} {{if $co.Nullable}}NULL{{else}}NOT NULL{{end}}{{if $co.Default}} DEFAULT {{$co.Default}}{{end}},
+"{{$co.Name}}" {{$co.Type}} {{if $co.Nullable}}NULL{{else}}NOT NULL{{end}}{{if $co.Default}} DEFAULT '{{$co.Default}}'{{end}},
 {{- end }}
 PRIMARY KEY ("{{.Pk}}"))
 {{- if .Inherited }}
 INHERITS ({{.Inherited}})
 {{- end }};
 
-{{- if not .Inherited }}
+{{- if and (not .Inherited) (not .IsCopy) }}
 CREATE OR REPLACE FUNCTION update_updated_at_column()
 RETURNS TRIGGER AS $$
 BEGIN
diff --git a/version/version.go b/version/version.go
index 0ebed9fd..3acdf7db 100644
--- a/version/version.go
+++ b/version/version.go
@@ -1,3 +1,3 @@
 package version
 
-const Release = "v2.2.2"
+const Release = "v2.2.3"