Method convertJoin

internal/engine/dolphin/convert.go:1080–1120

(n *pcast.Join)

}

func (c *cc) convertJoin(n *pcast.Join) *ast.List {
	if n == nil {
		return &ast.List{}
	}
	if n.Right != nil && n.Left != nil {
		// MySQL doesn't have a FULL join type
		joinType := ast.JoinType(n.Tp)
		if joinType >= ast.JoinTypeFull {
			joinType++
		}

		// Convert USING clause
		var usingClause *ast.List
		if len(n.Using) > 0 {
			items := make([]ast.Node, len(n.Using))
			for i, col := range n.Using {
				items[i] = &ast.String{Str: col.Name.O}
			}
			usingClause = &ast.List{Items: items}
		}

		return &ast.List{
			Items: []ast.Node{&ast.JoinExpr{
				Jointype:    joinType,
				IsNatural:   n.NaturalJoin,
				Larg:        c.convert(n.Left),
				Rarg:        c.convert(n.Right),
				UsingClause: usingClause,
				Quals:       c.convert(n.On),
			}},
		}
	}
	var tables []ast.Node
	if n.Right != nil {
		tables = append(tables, c.convert(n.Right))
	}
	if n.Left != nil {
		tables = append(tables, c.convert(n.Left))
	}
	return &ast.List{Items: tables}
}

func (c *cc) convertKillStmt(n *pcast.KillStmt) ast.Node {
	return todo(n)