SAP ABAP

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ABAP provides a rich set of operators to manipulate variables. All ABAP operators are classified into four categories −

  1. Arithmetic Operators
  2. Comparison Operators
  3. Bitwise Operators
  4. Character String Operators

一、Arithmetic Operators

Operators Description
+ Addition
- Subtraction
* Multiplication
/ Division
MOD Modulus

Example

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REPORT YS_SEP_08. 
DATA: A TYPE I VALUE 150, 
      B TYPE I VALUE 50, 
Result TYPE I. 
Result =  A / B. 
WRITE / Result.

Output

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3

二、Comparison Operators

Operators Description
= or EQ Equality
<> or NE Inequality
> or GT Greater than
< or LT Less than
>= or GE Greater than or equals
<= or LE Less than or equals
a1 BETWEEN a2 AND a3 Internal inclusive
IS INITIAL CONTENTS NOT CHANGED AND has been ASSIGNED ITS INITIAL VALUE
IS NOT INITIAL CONTENTS CHANGED

NOTE - If the data type or length of the variables does not match then automatic conversion is performed. Automatic type adjustment is performed for either one or both of the values while comparing two values of different data types. The conversion type is decided by the data type and the preference order of the data type.

  1. If one field is of type I, then the other is converted to type I.
  2. If one field is of type P, then the other is converted to type P.
  3. If one field is of type D, then the other is converted to type D. But C and N types are not converted and they are compared directly. Similar is the case with type T.
  4. If one field is of type N and the other is of type C or X, both the fields are converted to type P.
  5. If one field is of type C and the other is of type X, the X type is converted to type C.

Example 1

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REPORT YS_SEP_08. 
DATA: A TYPE I VALUE 115,
      B TYPE I VALUE 119.
      IF A LT B.
      WRITE: / 'A is less than B'.
      ENDIF

Output1

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A is less than B

Example2

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REPORT YS_SEP_08. 
DATA: A TYPE I.
      IF A IS INITIAL.
      WRITE: / 'A is assigned'.
      ENDIF.

Output2

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A is assigned.

三、Bitwise Operators

Operators Description
BIT-NOT 非
BIT-AND 与
BIT-XOR 与或
BIT-OR 或

四、Character String Operators

Operators Description
CO Contains Only
Checks whether A is solely composed of the characters in B
CN NOT Contains Only
Checks whether A contains characters that are not in B
CA Contains Any
Checks whether A contains at least one character of B
NA NOT Contains Any
Checks whether A does not contain any character of B
CS Contains a String
Checks whether A contains the character string B
NS NOT Contains a String
Checks whether A does not contain the character string B
CP Contains a Pattern
Checks whether A contains the pattern in B
NP NOT Contains a Pattern
Checks whether A does not contain the pattern in B

Example

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TO BE ASSIGNED

Output

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TO BE ASSIGNED