diff --git a/lib/sql/meta.go b/lib/sql/meta.go
new file mode 100644
index 00000000..7ce51f67
--- /dev/null
+++ b/lib/sql/meta.go
@@ -0,0 +1,84 @@
+// Copyright 2024, Shulhan <ms@kilabit.info>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sql
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Meta contains the DML meta data, including driver name, list of column
+// names, list of column holders, and list of values.
+type Meta struct {
+	driver string
+
+	// ListName contains list of column name.
+	ListName []string
+
+	// ListHolder contains list of column holder, as in "?" or "$x",
+	// depends on driver.
+	ListHolder []string
+
+	// ListValue contains list of column values, either for insert or
+	// select.
+	ListValue []any
+
+	// ListWhereValue contains list of values for where condition.
+	ListWhereValue []any
+}
+
+// NewMeta create new Meta using specific driver name.
+// The driver affect the ListHolder value.
+func NewMeta(driverName string) (meta *Meta) {
+	meta = &Meta{
+		driver: driverName,
+	}
+	return meta
+}
+
+// Add column name and variable.
+func (meta *Meta) Add(colName string, val any) {
+	meta.ListName = append(meta.ListName, colName)
+
+	if meta.driver == DriverNamePostgres {
+		meta.ListHolder = append(meta.ListHolder, fmt.Sprintf(`$%d`, len(meta.ListName)))
+	} else {
+		meta.ListHolder = append(meta.ListHolder, DefaultPlaceHolder)
+	}
+
+	meta.ListValue = append(meta.ListValue, val)
+}
+
+// AddWhere add value for where condition.
+// It return the length of ListWhereValue in list after addition.
+func (meta *Meta) AddWhere(val any) int {
+	meta.ListWhereValue = append(meta.ListWhereValue, val)
+	return len(meta.ListWhereValue)
+}
+
+// Names generate string of column names, for example "col1, col2, ...".
+func (meta *Meta) Names() string {
+	return strings.Join(meta.ListName, `,`)
+}
+
+// Holders generate string of holder, for example "$1, $2, ...".
+func (meta *Meta) Holders() string {
+	return strings.Join(meta.ListHolder, `,`)
+}
+
+// UpdateFields generate string of "col1=<holder>, col2=<holder>, ...".
+func (meta *Meta) UpdateFields() string {
+	var (
+		sb strings.Builder
+		x  int
+	)
+	for ; x < len(meta.ListName); x++ {
+		if x > 0 {
+			sb.WriteByte(',')
+		}
+		fmt.Fprintf(&sb, `%s=%s`, meta.ListName[x], meta.ListHolder[x])
+	}
+	return sb.String()
+}
diff --git a/lib/sql/meta_example_test.go b/lib/sql/meta_example_test.go
new file mode 100644
index 00000000..8f85b671
--- /dev/null
+++ b/lib/sql/meta_example_test.go
@@ -0,0 +1,77 @@
+// Copyright 2024, Shulhan <ms@kilabit.info>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sql_test
+
+import (
+	"fmt"
+
+	"github.com/shuLhan/share/lib/sql"
+)
+
+func ExampleMeta_Add_mysql() {
+	type Table struct {
+		Name string
+		ID   int
+	}
+
+	var (
+		meta = sql.NewMeta(sql.DriverNameMysql)
+		t    = Table{}
+	)
+
+	meta.Add(`id`, &t.ID)
+	meta.Add(`name`, &t.Name)
+
+	fmt.Println(meta.Names())
+	fmt.Println(meta.Holders())
+	fmt.Println(meta.UpdateFields())
+	// Output:
+	// id,name
+	// ?,?
+	// id=?,name=?
+}
+
+func ExampleMeta_Add_postgres() {
+	type Table struct {
+		Name string
+		ID   int
+	}
+
+	var (
+		meta = sql.NewMeta(sql.DriverNamePostgres)
+		t    = Table{}
+	)
+
+	meta.Add(`id`, &t.ID)
+	meta.Add(`name`, &t.Name)
+
+	fmt.Println(meta.Names())
+	fmt.Println(meta.Holders())
+	fmt.Println(meta.UpdateFields())
+	// Output:
+	// id,name
+	// $1,$2
+	// id=$1,name=$2
+}
+
+func ExampleMeta_AddWhere() {
+	var (
+		meta = sql.NewMeta(sql.DriverNamePostgres)
+		vals = []any{
+			int(1000),
+			string(`name`),
+		}
+		idx int
+	)
+
+	idx = meta.AddWhere(vals[0])
+	fmt.Println(idx, meta.ListWhereValue)
+
+	idx = meta.AddWhere(vals[1])
+	fmt.Println(idx, meta.ListWhereValue)
+	// Output:
+	// 1 [1000]
+	// 2 [1000 name]
+}
diff --git a/lib/sql/row.go b/lib/sql/row.go
index b992403f..1fdbfb7b 100644
--- a/lib/sql/row.go
+++ b/lib/sql/row.go
@@ -13,8 +13,40 @@ import (
 // The map's key is the column name in database and the map's value is
 // the column's value.
 // This type can be used to create dynamic insert-update fields.
+//
+// DEPRECATED: use [Meta] instead.
 type Row map[string]interface{}
 
+// Meta convert the Row into Meta.
+func (row Row) Meta(driverName string) (meta *Meta) {
+	meta = &Meta{}
+
+	if len(row) == 0 {
+		return meta
+	}
+
+	meta.ListName = make([]string, 0, len(row))
+	meta.ListHolder = make([]string, 0, len(row))
+	meta.ListValue = make([]interface{}, 0, len(row))
+
+	var colName string
+	for colName = range row {
+		meta.ListName = append(meta.ListName, colName)
+	}
+	sort.Strings(meta.ListName)
+
+	var x int
+	for x, colName = range meta.ListName {
+		if driverName == DriverNamePostgres {
+			meta.ListHolder = append(meta.ListHolder, fmt.Sprintf(`$%d`, x+1))
+		} else {
+			meta.ListHolder = append(meta.ListHolder, DefaultPlaceHolder)
+		}
+		meta.ListValue = append(meta.ListValue, row[colName])
+	}
+	return meta
+}
+
 // ExtractSQLFields extract the column's name, column place holder, and column
 // values as slices.
 //
@@ -30,23 +62,7 @@ func (row Row) ExtractSQLFields(driverName string) (names, holders []string, val
 		return nil, nil, nil
 	}
 
-	names = make([]string, 0, len(row))
-	holders = make([]string, 0, len(row))
-	values = make([]interface{}, 0, len(row))
-
-	for k := range row {
-		names = append(names, k)
-	}
-	sort.Strings(names)
-
-	for x, k := range names {
-		if driverName == DriverNamePostgres {
-			holders = append(holders, fmt.Sprintf("$%d", x+1))
-		} else {
-			holders = append(holders, DefaultPlaceHolder)
-		}
-		values = append(values, row[k])
-	}
+	var meta = row.Meta(driverName)
 
-	return names, holders, values
+	return meta.ListName, meta.ListHolder, meta.ListValue
 }