restructuring of files. added 2 new methods(Asc, Desc) to field

pool.go

@@ -7,8 +7,6 @@ import (
 	"context"
 	"errors"
 	"log/slog"
-	"strings"
-	"sync"
 	"sync/atomic"
 	"time"
 
@@ -17,17 +15,8 @@ import (
 )
 
 var (
-	poolPGX           atomic.Pointer[pgxpool.Pool]
-	poolStringBuilder = sync.Pool{
-		New: func() any {
-			return new(strings.Builder)
-		},
-	}
-
+	poolPGX              atomic.Pointer[pgxpool.Pool]
 	ErrConnStringMissing = errors.New("connection string is empty")
-	ErrInitTX            = errors.New("failed to init db.tx")
-	ErrCommitTX          = errors.New("failed to commit db.tx")
-	ErrNoRows            = errors.New("no data found")
 )
 
 type Config struct {
@@ -77,17 +66,6 @@ func InitPool(conf Config) {
 	poolPGX.Store(p)
 }
 
-// get string builder from pool
-func getSB() *strings.Builder {
-	return poolStringBuilder.Get().(*strings.Builder)
-}
-
-// put string builder back to pool
-func putSB(sb *strings.Builder) {
-	sb.Reset()
-	poolStringBuilder.Put(sb)
-}
-
 // GetPool instance
 func GetPool() *pgxpool.Pool {
 	return poolPGX.Load()