Feature model postgresql (#842)

* Support postgresql generate

* Update template Var

* Support to generate postgresql model

* Support to generate postgresql model

* Update template

Co-authored-by: anqiansong <anqiansong@xiaoheiban.cn>

tools/goctl/model/sql/gen/findone.go

@@ -6,7 +6,7 @@ import (
 	"github.com/tal-tech/go-zero/tools/goctl/util/stringx"
 )
 
-func genFindOne(table Table, withCache bool) (string, string, error) {
+func genFindOne(table Table, withCache, postgreSql bool) (string, string, error) {
 	camel := table.Name.ToCamel()
 	text, err := util.LoadTemplate(category, findOneTemplateFile, template.FindOne)
 	if err != nil {
@@ -19,11 +19,12 @@ func genFindOne(table Table, withCache bool) (string, string, error) {
 			"withCache":                 withCache,
 			"upperStartCamelObject":     camel,
 			"lowerStartCamelObject":     stringx.From(camel).Untitle(),
-			"originalPrimaryKey":        wrapWithRawString(table.PrimaryKey.Name.Source()),
+			"originalPrimaryKey":        wrapWithRawString(table.PrimaryKey.Name.Source(), postgreSql),
 			"lowerStartCamelPrimaryKey": stringx.From(table.PrimaryKey.Name.ToCamel()).Untitle(),
 			"dataType":                  table.PrimaryKey.DataType,
 			"cacheKey":                  table.PrimaryCacheKey.KeyExpression,
 			"cacheKeyVariable":          table.PrimaryCacheKey.KeyLeft,
+			"postgreSql":                postgreSql,
 		})
 	if err != nil {
 		return "", "", err