ABAP Select data from SAP table ISMAM_TXW_JHTVAABK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISMAM_TXW_JHTVAABK 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 ISMAM_TXW_JHTVAABK. 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 ISMAM_TXW_JHTVAABK 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_ISMAM_TXW_JHTVAABK TYPE STANDARD TABLE OF ISMAM_TXW_JHTVAABK,
      WA_ISMAM_TXW_JHTVAABK TYPE ISMAM_TXW_JHTVAABK,
      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: <ISMAM_TXW_JHTVAABK> TYPE ISMAM_TXW_JHTVAABK.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMAM_TXW_JHTVAABK
*  INTO TABLE @DATA(IT_ISMAM_TXW_JHTVAABK2).
*--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_ISMAM_TXW_JHTVAABK INDEX 1 INTO DATA(WA_ISMAM_TXW_JHTVAABK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMAM_TXW_JHTVAABK>-MANDT = 1.
<ISMAM_TXW_JHTVAABK>-VTNR = 1.
<ISMAM_TXW_JHTVAABK>-ABRGNR = 1.
<ISMAM_TXW_JHTVAABK>-VKORG = 1.
<ISMAM_TXW_JHTVAABK>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMAM_TXW_JHTVAABK-SPART, sy-vline,
  WA_ISMAM_TXW_JHTVAABK-VKBUR, sy-vline,
  WA_ISMAM_TXW_JHTVAABK-VKGRP, sy-vline,
  WA_ISMAM_TXW_JHTVAABK-ABRECHK, sy-vline,
  WA_ISMAM_TXW_JHTVAABK-JHABRDAT, sy-vline,
  WA_ISMAM_TXW_JHTVAABK-R_DATUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMAM_TXW_JHTVAABK 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_ISMAM_TXW_JHTVAABK 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_ISMAM_TXW_JHTVAABK INTO WA_ISMAM_TXW_JHTVAABK.


*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 CUNIT, internal->external for field EINH1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHTVAABK-EINH1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHTVAABK-EINH1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EINH2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHTVAABK-EINH2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHTVAABK-EINH2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINHABRM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHTVAABK-MEINHABRM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHTVAABK-MEINHABRM.
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_ISMAM_TXW_JHTVAABK_STR, 
MANDT TYPE STRING,
VTNR TYPE STRING,
ABRGNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
ABRECHK TYPE STRING,
JHABRDAT TYPE STRING,
R_DATUM TYPE STRING,
ABS_TYP1 TYPE STRING,
XBEST_PR TYPE STRING,
MENGE1 TYPE STRING,
EINH1 TYPE STRING,
AB_ZIEL1 TYPE STRING,
AB_WEINH TYPE STRING,
MENGE2 TYPE STRING,
EINH2 TYPE STRING,
PR_BASIS TYPE STRING,
AB_PREIS TYPE STRING,
AB_KPREIS TYPE STRING,
AB_VPREIS TYPE STRING,
RKNUMV TYPE STRING,
RABATT TYPE STRING,
VRABATT TYPE STRING,
BKNUMV TYPE STRING,
AKTBONUS TYPE STRING,
VBONUS TYPE STRING,
FREITEXT TYPE STRING,
MNGABRM TYPE STRING,
MEINHABRM TYPE STRING,
UMSABRM TYPE STRING,
WEINHABRM TYPE STRING,
FAKSP TYPE STRING,
DATEAAFS TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMAM_TXW_JHTVAABK_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_ISMAM_TXW_JHTVAABK_STR-MANDT sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VTNR sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ABRGNR sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VKORG sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VTWEG sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-SPART sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VKBUR sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VKGRP sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ABRECHK sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-JHABRDAT sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-R_DATUM sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ABS_TYP1 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-XBEST_PR sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-MENGE1 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-EINH1 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AB_ZIEL1 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AB_WEINH sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-MENGE2 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-EINH2 sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-PR_BASIS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AB_PREIS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AB_KPREIS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AB_VPREIS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-RKNUMV sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-RABATT sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VRABATT sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-BKNUMV sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AKTBONUS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-VBONUS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-FREITEXT sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-MNGABRM sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-MEINHABRM sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-UMSABRM sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-WEINHABRM sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-FAKSP sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-DATEAAFS sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ERFUSER sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ERFDATE sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-ERFTIME sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AENUSER sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AENDATE sy-vline 
WA_ISMAM_TXW_JHTVAABK_STR-AENTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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