ABAP Select data from SAP table ISU2A_TERM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU2A_TERM table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ISU2A_TERM. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ISU2A_TERM table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ISU2A_TERM TYPE STANDARD TABLE OF ISU2A_TERM,
      WA_ISU2A_TERM TYPE ISU2A_TERM,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ISU2A_TERM> TYPE ISU2A_TERM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU2A_TERM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU2A_TERM
  INTO TABLE IT_ISU2A_TERM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU2A_TERM
*  INTO TABLE @DATA(IT_ISU2A_TERM2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ISU2A_TERM INDEX 1 INTO DATA(WA_ISU2A_TERM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU2A_TERM ASSIGNING <ISU2A_TERM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU2A_TERM>-CSNO = 1.
<ISU2A_TERM>-AENDDAT = 1.
<ISU2A_TERM>-PREISKLA = 1.
<ISU2A_TERM>-IPRKLA = 1.
<ISU2A_TERM>-ABGGRND1 = 1.

ENDLOOP.

LOOP AT IT_ISU2A_TERM INTO WA_ISU2A_TERM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU2A_TERM-ABGGRND2, sy-vline,
  WA_ISU2A_TERM-ABGGRND3, sy-vline,
  WA_ISU2A_TERM-ABGGRND4, sy-vline,
  WA_ISU2A_TERM-ABGGRND5, sy-vline,
  WA_ISU2A_TERM-ABGGRND6, sy-vline,
  WA_ISU2A_TERM-ABGGRND7, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU2A_TERM you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ISU2A_TERM TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ISU2A_TERM INTO WA_ISU2A_TERM.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field PREISKLA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_TERM-PREISKLA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_TERM-PREISKLA.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISU2A_TERM_STR, 
CSNO TYPE STRING,
AENDDAT TYPE STRING,
PREISKLA TYPE STRING,
IPRKLA TYPE STRING,
ABGGRND1 TYPE STRING,
ABGGRND2 TYPE STRING,
ABGGRND3 TYPE STRING,
ABGGRND4 TYPE STRING,
ABGGRND5 TYPE STRING,
ABGGRND6 TYPE STRING,
ABGGRND7 TYPE STRING,
ABGGRND8 TYPE STRING,
ABGGRND9 TYPE STRING,
ABGGRND10 TYPE STRING,
OPERAND1 TYPE STRING,
OPERAND2 TYPE STRING,
OPERAND3 TYPE STRING,
OPERAND4 TYPE STRING,
OPERAND5 TYPE STRING,
OPERAND6 TYPE STRING,
OPERAND7 TYPE STRING,
OPERAND8 TYPE STRING,
OPERAND9 TYPE STRING,
OPERAND10 TYPE STRING,
OPTYP1 TYPE STRING,
OPTYP2 TYPE STRING,
OPTYP3 TYPE STRING,
OPTYP4 TYPE STRING,
OPTYP5 TYPE STRING,
OPTYP6 TYPE STRING,
OPTYP7 TYPE STRING,
OPTYP8 TYPE STRING,
OPTYP9 TYPE STRING,
OPTYP10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU2A_TERM_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ISU2A_TERM_STR-CSNO sy-vline 
WA_ISU2A_TERM_STR-AENDDAT sy-vline 
WA_ISU2A_TERM_STR-PREISKLA sy-vline 
WA_ISU2A_TERM_STR-IPRKLA sy-vline 
WA_ISU2A_TERM_STR-ABGGRND1 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND2 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND3 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND4 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND5 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND6 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND7 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND8 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND9 sy-vline 
WA_ISU2A_TERM_STR-ABGGRND10 sy-vline 
WA_ISU2A_TERM_STR-OPERAND1 sy-vline 
WA_ISU2A_TERM_STR-OPERAND2 sy-vline 
WA_ISU2A_TERM_STR-OPERAND3 sy-vline 
WA_ISU2A_TERM_STR-OPERAND4 sy-vline 
WA_ISU2A_TERM_STR-OPERAND5 sy-vline 
WA_ISU2A_TERM_STR-OPERAND6 sy-vline 
WA_ISU2A_TERM_STR-OPERAND7 sy-vline 
WA_ISU2A_TERM_STR-OPERAND8 sy-vline 
WA_ISU2A_TERM_STR-OPERAND9 sy-vline 
WA_ISU2A_TERM_STR-OPERAND10 sy-vline 
WA_ISU2A_TERM_STR-OPTYP1 sy-vline 
WA_ISU2A_TERM_STR-OPTYP2 sy-vline 
WA_ISU2A_TERM_STR-OPTYP3 sy-vline 
WA_ISU2A_TERM_STR-OPTYP4 sy-vline 
WA_ISU2A_TERM_STR-OPTYP5 sy-vline 
WA_ISU2A_TERM_STR-OPTYP6 sy-vline 
WA_ISU2A_TERM_STR-OPTYP7 sy-vline 
WA_ISU2A_TERM_STR-OPTYP8 sy-vline 
WA_ISU2A_TERM_STR-OPTYP9 sy-vline 
WA_ISU2A_TERM_STR-OPTYP10 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.