ABAP Select data from SAP table ISMAM_TXW_JHAGPZ 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_JHAGPZ 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_JHAGPZ. 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_JHAGPZ 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_JHAGPZ TYPE STANDARD TABLE OF ISMAM_TXW_JHAGPZ,
      WA_ISMAM_TXW_JHAGPZ TYPE ISMAM_TXW_JHAGPZ,
      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_JHAGPZ> TYPE ISMAM_TXW_JHAGPZ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMAM_TXW_JHAGPZ
*  INTO TABLE @DATA(IT_ISMAM_TXW_JHAGPZ2).
*--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_JHAGPZ INDEX 1 INTO DATA(WA_ISMAM_TXW_JHAGPZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMAM_TXW_JHAGPZ>-MANDT = 1.
<ISMAM_TXW_JHAGPZ>-AVM_NR = 1.
<ISMAM_TXW_JHAGPZ>-POS_NR = 1.
<ISMAM_TXW_JHAGPZ>-GPROLLE = 1.
<ISMAM_TXW_JHAGPZ>-GPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMAM_TXW_JHAGPZ-PARZA, sy-vline,
  WA_ISMAM_TXW_JHAGPZ-GRUPPABRNR, sy-vline,
  WA_ISMAM_TXW_JHAGPZ-UPOS_NR, sy-vline,
  WA_ISMAM_TXW_JHAGPZ-EIN_NR, sy-vline,
  WA_ISMAM_TXW_JHAGPZ-MOTIV, sy-vline,
  WA_ISMAM_TXW_JHAGPZ-ADRNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMAM_TXW_JHAGPZ 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_JHAGPZ 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_JHAGPZ INTO WA_ISMAM_TXW_JHAGPZ.


*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 AVM_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHAGPZ-AVM_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHAGPZ-AVM_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field GPROLLE
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHAGPZ-GPROLLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHAGPZ-GPROLLE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ADRC_ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISMAM_TXW_JHAGPZ-ADRC_ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISMAM_TXW_JHAGPZ-ADRC_ADDRNUMBER.
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_JHAGPZ_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
POS_NR TYPE STRING,
GPROLLE TYPE STRING,
GPNR TYPE STRING,
PARZA TYPE STRING,
GRUPPABRNR TYPE STRING,
UPOS_NR TYPE STRING,
EIN_NR TYPE STRING,
MOTIV TYPE STRING,
ADRNR TYPE STRING,
LOGADR TYPE STRING,
ADRESSVAR TYPE STRING,
ADR_ANRED TYPE STRING,
INSZ_NR TYPE STRING,
XINSBLANK TYPE STRING,
HERK TYPE STRING,
PARNR TYPE STRING,
X_ADRND TYPE STRING,
X_ADRNP TYPE STRING,
XCPDK TYPE STRING,
SADR_ADRNR TYPE STRING,
POS_ART TYPE STRING,
BELEG_ART TYPE STRING,
BELEG_ANZ TYPE STRING,
BELEG_KOST TYPE STRING,
KORR_ART TYPE STRING,
KORR_ANZ TYPE STRING,
RECH_KOPIE TYPE STRING,
XAUSPOS TYPE STRING,
XAUSUPOS TYPE STRING,
XAUSEINT TYPE STRING,
BE_DRERZ TYPE STRING,
BE_PVA TYPE STRING,
BE_DATUM TYPE STRING,
BE_VBELN TYPE STRING,
BE_POSNR TYPE STRING,
BE_POSEX TYPE STRING,
BE_ADRNR TYPE STRING,
BE_ERROR TYPE STRING,
ADRC_ADDRNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMAM_TXW_JHAGPZ_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_JHAGPZ_STR-MANDT sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-AVM_NR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-POS_NR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-GPROLLE sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-GPNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-PARZA sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-GRUPPABRNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-UPOS_NR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-EIN_NR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-MOTIV sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-ADRNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-LOGADR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-ADRESSVAR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-ADR_ANRED sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-INSZ_NR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-XINSBLANK sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-HERK sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-PARNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-X_ADRND sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-X_ADRNP sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-XCPDK sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-SADR_ADRNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-POS_ART sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BELEG_ART sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BELEG_ANZ sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BELEG_KOST sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-KORR_ART sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-KORR_ANZ sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-RECH_KOPIE sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-XAUSPOS sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-XAUSUPOS sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-XAUSEINT sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_DRERZ sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_PVA sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_DATUM sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_VBELN sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_POSNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_POSEX sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_ADRNR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-BE_ERROR sy-vline 
WA_ISMAM_TXW_JHAGPZ_STR-ADRC_ADDRNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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