ABAP Select data from SAP table ISU2A_SS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU2A_SS 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_SS. 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_SS 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_SS TYPE STANDARD TABLE OF ISU2A_SS,
      WA_ISU2A_SS TYPE ISU2A_SS,
      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_SS> TYPE ISU2A_SS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU2A_SS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU2A_SS
  INTO TABLE IT_ISU2A_SS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU2A_SS
*  INTO TABLE @DATA(IT_ISU2A_SS2).
*--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_SS INDEX 1 INTO DATA(WA_ISU2A_SS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU2A_SS ASSIGNING <ISU2A_SS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU2A_SS>-CSNO = 1.
<ISU2A_SS>-LSNO = 1.
<ISU2A_SS>-AB = 1.
<ISU2A_SS>-BIS = 1.
<ISU2A_SS>-TARIFNR = 1.

ENDLOOP.

LOOP AT IT_ISU2A_SS INTO WA_ISU2A_SS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU2A_SS-TARLFDNR, sy-vline,
  WA_ISU2A_SS-OPTIONAL, sy-vline,
  WA_ISU2A_SS-TIMECONTRL, sy-vline,
  WA_ISU2A_SS-STTARIF, sy-vline,
  WA_ISU2A_SS-S_TVORG, sy-vline,
  WA_ISU2A_SS-H_TVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU2A_SS 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_SS 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_SS INTO WA_ISU2A_SS.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_ISU2A_SS_STR, 
CSNO TYPE STRING,
LSNO TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
TARIFNR TYPE STRING,
TARLFDNR TYPE STRING,
OPTIONAL TYPE STRING,
TIMECONTRL TYPE STRING,
STTARIF TYPE STRING,
S_TVORG TYPE STRING,
H_TVORG TYPE STRING,
S_ABSTVORG TYPE STRING,
H_ABSTVORG TYPE STRING,
CHNG_SIGN TYPE STRING,
KONZIGR TYPE STRING,
SAISON TYPE STRING,
PROGRAMM TYPE STRING,
EIN01 TYPE STRING,
EIN02 TYPE STRING,
EIN03 TYPE STRING,
EIN04 TYPE STRING,
EIN05 TYPE STRING,
EIN06 TYPE STRING,
EIN07 TYPE STRING,
EIN08 TYPE STRING,
EIN09 TYPE STRING,
EIN10 TYPE STRING,
AUS01 TYPE STRING,
AUS02 TYPE STRING,
AUS03 TYPE STRING,
AUS04 TYPE STRING,
AUS05 TYPE STRING,
VARCONT1 TYPE STRING,
VARCONT2 TYPE STRING,
VARCONT3 TYPE STRING,
VARCONT4 TYPE STRING,
VARCONT5 TYPE STRING,
BELZART1 TYPE STRING,
BELZART2 TYPE STRING,
BELZART3 TYPE STRING,
BELZART4 TYPE STRING,
BELZART5 TYPE STRING,
LRATESTEP TYPE STRING,
STEPINACT TYPE STRING,
BUCHREL TYPE STRING,
BETRSTREL TYPE STRING,
MENGESTREL TYPE STRING,
STGRAMT TYPE STRING,
STGRQNT TYPE STRING,
ERCHV_BW_REL TYPE STRING,
DISCON_FREE TYPE STRING,
PREISZUS TYPE STRING,
GROSSGROUP TYPE STRING,
GROSSPRICE TYPE STRING,
BRUTTOZEILE TYPE STRING,
TAXGROUP TYPE STRING,
LINE_CLASS TYPE STRING,
LINESORT1 TYPE STRING,
LINESORT2 TYPE STRING,
LINESORT3 TYPE STRING,
LINESORT4 TYPE STRING,
LINESORT5 TYPE STRING,
BACKSTART TYPE STRING,
BACKONLY TYPE STRING,
BACKEXEC01 TYPE STRING,
BACKEXEC02 TYPE STRING,
BACKEXEC03 TYPE STRING,
BACKEXEC04 TYPE STRING,
BACKEXEC05 TYPE STRING,
BACKCANC01 TYPE STRING,
BACKCANC02 TYPE STRING,
BACKCANC03 TYPE STRING,
BACKCANC04 TYPE STRING,
BACKCANC05 TYPE STRING,
DYNSTART TYPE STRING,
DYNEXEC01 TYPE STRING,
DYNEXEC02 TYPE STRING,
DYNEXEC03 TYPE STRING,
DYNEXEC04 TYPE STRING,
DYNEXEC05 TYPE STRING,
DYNCANC01 TYPE STRING,
DYNCANC02 TYPE STRING,
DYNCANC03 TYPE STRING,
DYNCANC04 TYPE STRING,
DYNCANC05 TYPE STRING,
TIMESLICEGEN TYPE STRING,
BBINFOLINES TYPE STRING,
DELOPERAND TYPE STRING,
ADVCONTROL TYPE STRING,
NO_ABRZEIT TYPE STRING,
TARIFTYP TYPE STRING,
STATTART TYPE STRING,
KONDIGR TYPE STRING,
SCHEMANR TYPE STRING,
VARTYPE TYPE STRING,
ARTMENGE TYPE STRING,
OPTIONIND TYPE STRING,
SNO TYPE STRING,
PERTYP TYPE STRING,
BACKNO TYPE STRING,
DISCOUNT TYPE STRING,
INACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU2A_SS_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_SS_STR-CSNO sy-vline 
WA_ISU2A_SS_STR-LSNO sy-vline 
WA_ISU2A_SS_STR-AB sy-vline 
WA_ISU2A_SS_STR-BIS sy-vline 
WA_ISU2A_SS_STR-TARIFNR sy-vline 
WA_ISU2A_SS_STR-TARLFDNR sy-vline 
WA_ISU2A_SS_STR-OPTIONAL sy-vline 
WA_ISU2A_SS_STR-TIMECONTRL sy-vline 
WA_ISU2A_SS_STR-STTARIF sy-vline 
WA_ISU2A_SS_STR-S_TVORG sy-vline 
WA_ISU2A_SS_STR-H_TVORG sy-vline 
WA_ISU2A_SS_STR-S_ABSTVORG sy-vline 
WA_ISU2A_SS_STR-H_ABSTVORG sy-vline 
WA_ISU2A_SS_STR-CHNG_SIGN sy-vline 
WA_ISU2A_SS_STR-KONZIGR sy-vline 
WA_ISU2A_SS_STR-SAISON sy-vline 
WA_ISU2A_SS_STR-PROGRAMM sy-vline 
WA_ISU2A_SS_STR-EIN01 sy-vline 
WA_ISU2A_SS_STR-EIN02 sy-vline 
WA_ISU2A_SS_STR-EIN03 sy-vline 
WA_ISU2A_SS_STR-EIN04 sy-vline 
WA_ISU2A_SS_STR-EIN05 sy-vline 
WA_ISU2A_SS_STR-EIN06 sy-vline 
WA_ISU2A_SS_STR-EIN07 sy-vline 
WA_ISU2A_SS_STR-EIN08 sy-vline 
WA_ISU2A_SS_STR-EIN09 sy-vline 
WA_ISU2A_SS_STR-EIN10 sy-vline 
WA_ISU2A_SS_STR-AUS01 sy-vline 
WA_ISU2A_SS_STR-AUS02 sy-vline 
WA_ISU2A_SS_STR-AUS03 sy-vline 
WA_ISU2A_SS_STR-AUS04 sy-vline 
WA_ISU2A_SS_STR-AUS05 sy-vline 
WA_ISU2A_SS_STR-VARCONT1 sy-vline 
WA_ISU2A_SS_STR-VARCONT2 sy-vline 
WA_ISU2A_SS_STR-VARCONT3 sy-vline 
WA_ISU2A_SS_STR-VARCONT4 sy-vline 
WA_ISU2A_SS_STR-VARCONT5 sy-vline 
WA_ISU2A_SS_STR-BELZART1 sy-vline 
WA_ISU2A_SS_STR-BELZART2 sy-vline 
WA_ISU2A_SS_STR-BELZART3 sy-vline 
WA_ISU2A_SS_STR-BELZART4 sy-vline 
WA_ISU2A_SS_STR-BELZART5 sy-vline 
WA_ISU2A_SS_STR-LRATESTEP sy-vline 
WA_ISU2A_SS_STR-STEPINACT sy-vline 
WA_ISU2A_SS_STR-BUCHREL sy-vline 
WA_ISU2A_SS_STR-BETRSTREL sy-vline 
WA_ISU2A_SS_STR-MENGESTREL sy-vline 
WA_ISU2A_SS_STR-STGRAMT sy-vline 
WA_ISU2A_SS_STR-STGRQNT sy-vline 
WA_ISU2A_SS_STR-ERCHV_BW_REL sy-vline 
WA_ISU2A_SS_STR-DISCON_FREE sy-vline 
WA_ISU2A_SS_STR-PREISZUS sy-vline 
WA_ISU2A_SS_STR-GROSSGROUP sy-vline 
WA_ISU2A_SS_STR-GROSSPRICE sy-vline 
WA_ISU2A_SS_STR-BRUTTOZEILE sy-vline 
WA_ISU2A_SS_STR-TAXGROUP sy-vline 
WA_ISU2A_SS_STR-LINE_CLASS sy-vline 
WA_ISU2A_SS_STR-LINESORT1 sy-vline 
WA_ISU2A_SS_STR-LINESORT2 sy-vline 
WA_ISU2A_SS_STR-LINESORT3 sy-vline 
WA_ISU2A_SS_STR-LINESORT4 sy-vline 
WA_ISU2A_SS_STR-LINESORT5 sy-vline 
WA_ISU2A_SS_STR-BACKSTART sy-vline 
WA_ISU2A_SS_STR-BACKONLY sy-vline 
WA_ISU2A_SS_STR-BACKEXEC01 sy-vline 
WA_ISU2A_SS_STR-BACKEXEC02 sy-vline 
WA_ISU2A_SS_STR-BACKEXEC03 sy-vline 
WA_ISU2A_SS_STR-BACKEXEC04 sy-vline 
WA_ISU2A_SS_STR-BACKEXEC05 sy-vline 
WA_ISU2A_SS_STR-BACKCANC01 sy-vline 
WA_ISU2A_SS_STR-BACKCANC02 sy-vline 
WA_ISU2A_SS_STR-BACKCANC03 sy-vline 
WA_ISU2A_SS_STR-BACKCANC04 sy-vline 
WA_ISU2A_SS_STR-BACKCANC05 sy-vline 
WA_ISU2A_SS_STR-DYNSTART sy-vline 
WA_ISU2A_SS_STR-DYNEXEC01 sy-vline 
WA_ISU2A_SS_STR-DYNEXEC02 sy-vline 
WA_ISU2A_SS_STR-DYNEXEC03 sy-vline 
WA_ISU2A_SS_STR-DYNEXEC04 sy-vline 
WA_ISU2A_SS_STR-DYNEXEC05 sy-vline 
WA_ISU2A_SS_STR-DYNCANC01 sy-vline 
WA_ISU2A_SS_STR-DYNCANC02 sy-vline 
WA_ISU2A_SS_STR-DYNCANC03 sy-vline 
WA_ISU2A_SS_STR-DYNCANC04 sy-vline 
WA_ISU2A_SS_STR-DYNCANC05 sy-vline 
WA_ISU2A_SS_STR-TIMESLICEGEN sy-vline 
WA_ISU2A_SS_STR-BBINFOLINES sy-vline 
WA_ISU2A_SS_STR-DELOPERAND sy-vline 
WA_ISU2A_SS_STR-ADVCONTROL sy-vline 
WA_ISU2A_SS_STR-NO_ABRZEIT sy-vline 
WA_ISU2A_SS_STR-TARIFTYP sy-vline 
WA_ISU2A_SS_STR-STATTART sy-vline 
WA_ISU2A_SS_STR-KONDIGR sy-vline 
WA_ISU2A_SS_STR-SCHEMANR sy-vline 
WA_ISU2A_SS_STR-VARTYPE sy-vline 
WA_ISU2A_SS_STR-ARTMENGE sy-vline 
WA_ISU2A_SS_STR-OPTIONIND sy-vline 
WA_ISU2A_SS_STR-SNO sy-vline 
WA_ISU2A_SS_STR-PERTYP sy-vline 
WA_ISU2A_SS_STR-BACKNO sy-vline 
WA_ISU2A_SS_STR-DISCOUNT sy-vline 
WA_ISU2A_SS_STR-INACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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