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

qry_select.go

@@ -14,6 +14,120 @@ import (
 )
 
 type (
+	SelectClause interface {
+		// Join and Inner Join are same
+		Join(m Table, t1Field, t2Field Field, cond ...Conditioner) SelectClause
+		LeftJoin(m Table, t1Field, t2Field Field, cond ...Conditioner) SelectClause
+		RightJoin(m Table, t1Field, t2Field Field, cond ...Conditioner) SelectClause
+		FullJoin(m Table, t1Field, t2Field Field, cond ...Conditioner) SelectClause
+		CrossJoin(m Table) SelectClause
+		WhereClause
+		OrderByClause
+		GroupByClause
+		LimitClause
+		OffsetClause
+		Query
+		raw(prefixArgs []any) (string, []any)
+	}
+
+	WhereClause interface {
+		Where(cond ...Conditioner) AfterWhere
+	}
+
+	AfterWhere interface {
+		WhereClause
+		GroupByClause
+		OrderByClause
+		LimitClause
+		OffsetClause
+		Query
+	}
+
+	GroupByClause interface {
+		GroupBy(fields ...Field) AfterGroupBy
+	}
+
+	AfterGroupBy interface {
+		HavinClause
+		OrderByClause
+		LimitClause
+		OffsetClause
+		Query
+	}
+
+	HavinClause interface {
+		Having(cond ...Conditioner) AfterHaving
+	}
+
+	AfterHaving interface {
+		OrderByClause
+		LimitClause
+		OffsetClause
+		Query
+	}
+
+	OrderByClause interface {
+		OrderBy(fields ...Field) AfterOrderBy
+	}
+
+	AfterOrderBy interface {
+		LimitClause
+		OffsetClause
+		Query
+	}
+
+	LimitClause interface {
+		Limit(v int) AfterLimit
+	}
+
+	AfterLimit interface {
+		OffsetClause
+		Query
+	}
+
+	OffsetClause interface {
+		Offset(v int) AfterOffset
+	}
+
+	AfterOffset interface {
+		LimitClause
+		Query
+	}
+
+	Do interface {
+		DoNothing() Execute
+		DoUpdate(fields ...Field) Execute
+	}
+
+	Query interface {
+		First
+		All
+		Stringer
+	}
+
+	RowScanner interface {
+		Scan(dest ...any) error
+	}
+
+	RowsCb func(row RowScanner) error
+
+	First interface {
+		First(ctx context.Context, dest ...any) error
+		FirstTx(ctx context.Context, tx pgx.Tx, dest ...any) error
+		Stringer
+	}
+
+	All interface {
+		// Query rows
+		//
+		// don't forget to close() rows
+		All(ctx context.Context, rows RowsCb) error
+		// Query rows
+		//
+		// don't forget to close() rows
+		AllTx(ctx context.Context, tx pgx.Tx, rows RowsCb) error
+	}
+
 	selectQry struct {
 		table   string
 		fields  []Field
@@ -23,9 +137,11 @@ type (
 		groupBy []Field
 		having  []Conditioner
 		orderBy []Field
-		limit   int
-		offset  int
-		debug   bool
+
+		limit  int
+		offset int
+
+		debug bool
 	}
 
 	CondAction uint8
@@ -51,17 +167,6 @@ const (
 	CondActionSubQuery
 )
 
-// Select clause
-func (t Table) Select(field ...Field) SelectClause {
-	qb := &selectQry{
-		table:  t.Name,
-		debug:  t.debug,
-		fields: field,
-	}
-
-	return qb
-}
-
 func (q *selectQry) Join(t Table, t1Field, t2Field Field, cond ...Conditioner) SelectClause {
 	return q.buildJoin(t, "JOIN", t1Field, t2Field, cond...)
 }