ABAP可以提高效率的小语法

• ADD dobj1 TO dobj2.

  Effect

  This statement has the same effect as the statement

  COMPUTE dobj2 = dobj2 + dobj1.

• SUBTRACT dobj1 FROM dobj2.
  Effect

  This statement has the same effect as the statement

  COMPUTE dobj2 = dobj2 - dobj1.

• The following table lists the relational operators for comparisons between operands (single operands or calculation expressions) of any data type.

  operator	Meaning
  =, EQ	Equal: True if the value of operand1 matches the value of operand2.
  <>, NE	Not Equal: True if the value of operand1 does not match the value of operand2.
  <, LT	Less Than: True if the value of operand1 is less than the value of operand2.
  >, GT	Greater Than: True if the value of operand1 is greater than the value of operand2.
  <=, LE	Less Equal: True if the value of operand1 is less than or equal to the value of operand2.
  >=, GE	Greater Equal: True if the value of operand1 is greater than or equal to the value of operand2