add dialect for different database

readme.md

@@ -111,11 +111,15 @@ var rose = gorose.Open(
 ```
 
 ## 驱动支持
-- MySQL
-- MsSQL
-- Postgresql
-- Oracle
-- Sqlite3
+- mysql : https://github.com/go-sql-driver/mysql  
+- sqlite3 : https://github.com/mattn/go-sqlite3  
+- postgres : https://github.com/lib/pq  
+- oracle : https://github.com/mattn/go-oci8  
+- mssql : https://github.com/denisenkom/go-mssqldb  
+
+目前实现了以上5中数据库的支持, 通用数据库,只需要添加更多的 `gorose/driver/dialect.IDialect` 接口即可  
+非通用数据库,只要实现了 gorose/driver.IDriver 接口,理论上可以支持任意数据库,包括 redis,mongo 等都可以通过这个接口来实现  
+所有的 orm 链式操作都在 `gorose/builder.Context` 中, 直接可以拿到最原始的数据  
 
 ## 事务
 ```go
@@ -125,7 +129,7 @@ db().Transaction(func(tx gorose.TxHandler) error {
     tx().Insert(&user)
     tx().Update(&user)
     tx().To(&user)
-}
+})
 
 // 手动事务
 tx = db().Begin()
@@ -269,6 +273,7 @@ db().Table(User{}).Where("id",">", 1).Where(func(wh builder.IWhere) {
     wh.Where("sex", 1).OrWhere("sex", 2)
 })
 ```
+这里的 Where 等同于 WhereNested
 ```go
 // where id>1 and (sex=1 or sex=2)
 db().Table(User{}).Where("id",">", 1).WhereNested(func(wh builder.IWhere) {
@@ -386,9 +391,6 @@ db().Table("users").MinTo("age", &min)
 ## 日志
 默认采用 官方库的 slog debug level, 如果不想显示sql日志, 只需要设置slog的level到debug以上即可, 如: Info, Warn, Error
 
-## 驱动
-只要实现了 gorose/driver.IDriver 接口即可,理论上可以支持任意数据库, 目前实现了mysql的支持, 可以开发更多接口的支持  
-
 ## 数据库字段为null的处理
 ```go
 type User struct {
@@ -475,7 +477,8 @@ if age.Valid {
 
 - [x] Pluck  
 - [x] List  
-- [x] Value  
+- [x] Value
+- [x] Paginate
 
 - [x] Increment  
 - [x] Decrement  
@@ -508,3 +511,4 @@ if age.Valid {
 - [x] MaxTo  
 - [x] UnionTo  
 - [x] UnionAllTo  
+

sugar.go

@@ -53,7 +53,6 @@ func (db *Database) Paginate(obj ...any) (result Pagination, err error) {
 	return
 }
 
-
 func (db *Database) WhereSub(column string, operation string, sub builder.WhereSubHandler) *Database {
 	db.Context.WhereClause.WhereSub(column, operation, sub)
 	return db
@@ -113,6 +112,7 @@ func (db *Database) OrWhereLike(column, value string) *Database {
 	db.Context.WhereClause.OrWhereLike(column, value)
 	return db
 }
+
 //func (db *Database) WhereNotIn(column string, value any) *Database {
 //	db.Context.WhereClause.WhereNotIn(column, value)
 //	return db
@@ -148,6 +148,7 @@ func (db *Database) OrWhereLike(column, value string) *Database {
 //	db.Context.WhereClause.whereLike("OR", column, value, true)
 //	return db
 //}
+
 func (db *Database) WhereNot(column any, args ...any) *Database {
 	db.Context.WhereClause.WhereNot(column, args...)
 	return db

toSql_test.go

@@ -11,10 +11,10 @@ type User struct {
 }
 
 // var dbg = Open("mysql") // just test toSql
-// var dbg = Open("postgresql") // just test toSql
+var dbg = Open("postgresql") // just test toSql
 // var dbg = Open("mssql") // just test toSql
 // var dbg = Open("oracle") // just test toSql
-var dbg = Open("sqlite3") // just test toSql
+//var dbg = Open("sqlite3") // just test toSql
 
 func db() *Database {
 	return dbg.NewDatabase()
@@ -63,12 +63,15 @@ func TestDatabase_ToSqlInsert(t *testing.T) {
 	driver.AssertsEqual(t, expectValues, values)
 }
 func TestDatabase_ToSqlInserts(t *testing.T) {
-	var user = []User{{Name: "John"}, {Name: "Alice"}}
+	var user = []User{{Id: 1, Name: "John"}, {Id: 2, Name: "Alice"}}
 	prepare, values, err := db().ToSqlInsert(&user)
 	driver.AssertsError(t, err)
-	var expect = "INSERT INTO `User` (`name`) VALUES (?),(?)"
-	driver.AssertsEqual(t, expect, prepare)
-	var expectValues = []string{"John", "Alice"}
+	var expect = map[string]string{
+		"mysql":      "INSERT INTO `User` (`id`,`name`) VALUES (?,?),(?,?)",
+		"postgresql": `INSERT INTO "User" ("id","name") VALUES ($1,$2),($3,$4)`,
+	}
+	driver.AssertsEqual(t, expect[dbg.driver], prepare)
+	var expectValues = []interface{}{1, "John", 2, "Alice"}
 	driver.AssertsEqual(t, expectValues, values)
 }
 func TestDatabase_ToSqlUpdate(t *testing.T) {

util.go

@@ -2,11 +2,8 @@ package gorose
 
 import (
 	"database/sql"
-	"fmt"
 	"github.com/gohouse/gorose/v3/builder"
 	"math/rand"
-	"regexp"
-	"strings"
 	"time"
 )
 
@@ -23,32 +20,33 @@ func As(table any, alias string) builder.TableClause {
 func GetRandomInt(num int) int {
 	return rand.Intn(num)
 }
-func GetRandomWeightedIndex(weights []int) int {
-	if len(weights) == 0 {
-		return 0
-	}
-	if len(weights) == 1 {
-		return 0
-	}
-	totalWeight := 0
-	for _, w := range weights {
-		totalWeight += w
-	}
-	if totalWeight == 0 {
-		return rand.Intn(len(weights))
-	}
 
-	rnd := rand.Intn(totalWeight)
-
-	currentWeight := 0
-	for i, w := range weights {
-		currentWeight += w
-		if rnd < currentWeight {
-			return i
-		}
-	}
-	return -1 // 如果权重都为 0，或者总权重为 0，则返回 -1
-}
+//func GetRandomWeightedIndex(weights []int) int {
+//	if len(weights) == 0 {
+//		return 0
+//	}
+//	if len(weights) == 1 {
+//		return 0
+//	}
+//	totalWeight := 0
+//	for _, w := range weights {
+//		totalWeight += w
+//	}
+//	if totalWeight == 0 {
+//		return rand.Intn(len(weights))
+//	}
+//
+//	rnd := rand.Intn(totalWeight)
+//
+//	currentWeight := 0
+//	for i, w := range weights {
+//		currentWeight += w
+//		if rnd < currentWeight {
+//			return i
+//		}
+//	}
+//	return -1 // 如果权重都为 0，或者总权重为 0，则返回 -1
+//}
 
 //////////// struct field ptr 4 orm helpers ////////////
 
@@ -61,7 +59,3 @@ func Ptr[T any](arg T) *T {
 func Null[T any](arg T) sql.Null[T] {
 	return sql.Null[T]{V: arg, Valid: true}
 }
-
-func NamedSprintf(format string, a ...any) string {
-	return strings.TrimSpace(regexp.MustCompile(`\s{2,}`).ReplaceAllString(fmt.Sprintf(regexp.MustCompile(`:\w+`).ReplaceAllString(format, "%s"), a...), " "))
-}