override public void Assembly(Assembler asm)
{
asm.Begin(this);
asm.SetFlag(Assembler.FLAG_HANA_CONCAT);
asm.Add(LeftExpression);
asm.AddSpace();
asm.Add("||");
asm.AddSpace();
asm.Add(RightExpression);
asm.ClearFlag(Assembler.FLAG_HANA_CONCAT);
asm.End(this);
}