сделал db

internal/create_files/db/db.go

@@ -358,6 +358,7 @@ func DeleteFuncTestFind_byExtID(TextDB string, Table1 *types.Table) string {
 	return Otvet
 }
 
+// AddTextOmit - добавляет код для записи null в колонки Nullable
 func AddTextOmit(TextDB string, Table1 *types.Table) string {
 	Otvet := TextDB
 
@@ -370,11 +371,13 @@ func AddTextOmit(TextDB string, Table1 *types.Table) string {
 	TextOmit := ""
 	for _, Column1 := range Table1.MapColumns {
 		TypeGo := Column1.TypeGo
-		if TypeGo != "time.Time" {
+		if Column1.IsNullable == false {
 			continue
 		}
 
 		ColumnNameGo := Column1.NameGo
+
+		if TypeGo == "time.Time" {
 			TextFind := `if m.` + ColumnNameGo + `.IsZero() == true {`
 			pos1 := strings.Index(TextDB, TextFind)
 			if pos1 >= 0 {
@@ -387,9 +390,37 @@ func AddTextOmit(TextDB string, Table1 *types.Table) string {
 	}
 
 `
+		} else if IsNumberType(TypeGo) == true && Column1.TableKey != "" {
+			TextFind := `if m.` + ColumnNameGo + ` == 0 {`
+			pos1 := strings.Index(TextDB, TextFind)
+			if pos1 >= 0 {
+				continue
+			}
+
+			TextOmit = TextOmit + "\t" + `ColumnName = "` + ColumnNameGo + `"
+	if m.` + ColumnNameGo + ` == 0 {
+		MassOmit = append(MassOmit, ColumnName)
+	}
+
+`
+		}
+
 	}
 
 	Otvet = Otvet[:pos1] + TextOmit + Otvet[pos1:]
 
 	return Otvet
 }
+
+func IsNumberType(TypeGo string) bool {
+	Otvet := false
+
+	switch TypeGo {
+	case "int", "int8", "int16", "int32", "int64", "float32", "float64", "uint", "uint8", "uint16", "uint32", "uint64", "byte":
+		{
+			Otvet = true
+		}
+	}
+
+	return Otvet
+}

internal/create_files/model/model.go

@@ -127,7 +127,7 @@ func FindTextColumn(Column1 *types.Column) string {
 	Type_go := SQLMapping1.GoType
 	Column1.TypeGo = Type_go
 	TextDefaultValue := FindTextDefaultValue(Type_go)
-	TextPrimaryKey := FindTextPrimaryKey(Column1.Is_identity)
+	TextPrimaryKey := FindTextPrimaryKey(Column1.IsIdentity)
 	Description := Column1.Description
 	Description = strconv.Quote(Description) //экранирование символов
 

internal/postgres/postgres.go

@@ -19,6 +19,7 @@ type TableColumn struct {
 	ColumnName        string `json:"column_name"   gorm:"column:column_name;default:''"`
 	ColumnType        string `json:"type_name"   gorm:"column:type_name;default:''"`
 	ColumnIsIdentity  string `json:"is_identity"   gorm:"column:is_identity;default:''"`
+	ColumnIsNullable  string `json:"is_nullable"   gorm:"column:is_nullable;default:''"`
 	ColumnDescription string `json:"description"   gorm:"column:description;default:''"`
 	ColumnTableKey    string `json:"table_key"   gorm:"column:table_key;default:''"`
 	ColumnColumnKey   string `json:"column_key"   gorm:"column:column_key;default:''"`
@@ -62,6 +63,7 @@ SELECT
 	c.column_name,
 	c.udt_name as type_name,
 	c.is_identity as is_identity,
+	c.is_nullable as is_nullable, 
 	COALESCE(pgd.description, '') as description,
 	COALESCE(keys.table_to, '') as table_key,
 	COALESCE(keys.column_to, '') as column_key 
@@ -200,7 +202,10 @@ order by
 		Column1.Name = v.ColumnName
 		Column1.Type = v.ColumnType
 		if v.ColumnIsIdentity == "YES" {
-			Column1.Is_identity = true
+			Column1.IsIdentity = true
+		}
+		if v.ColumnIsNullable == "YES" {
+			Column1.IsNullable = true
 		}
 		Column1.Description = v.ColumnDescription
 		Column1.OrderNumber = OrderNumberColumn

internal/types/types.go

@@ -3,7 +3,8 @@ package types
 type Column struct {
 	Name        string `json:"name"   gorm:"column:name;default:''"`
 	Type        string `json:"type_name"   gorm:"column:type_name;default:''"`
-	Is_identity bool   `json:"is_identity"   gorm:"column:is_identity;default:false"`
+	IsIdentity  bool   `json:"is_identity"   gorm:"column:is_identity;default:false"`
+	IsNullable  bool   `json:"is_nullable"   gorm:"column:is_nullable;default:''"`
 	Description string `json:"description"   gorm:"column:description;default:''"`
 	OrderNumber int
 	TableKey    string `json:"table_key"   gorm:"column:table_key;default:''"`