ABAP Select data from SAP table POM_HOMPSAC0_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP POM_HOMPSAC0_ALV 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 POM_HOMPSAC0_ALV. 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 POM_HOMPSAC0_ALV 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_POM_HOMPSAC0_ALV TYPE STANDARD TABLE OF POM_HOMPSAC0_ALV,
      WA_POM_HOMPSAC0_ALV TYPE POM_HOMPSAC0_ALV,
      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: <POM_HOMPSAC0_ALV> TYPE POM_HOMPSAC0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_POM_HOMPSAC0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM POM_HOMPSAC0_ALV
  INTO TABLE IT_POM_HOMPSAC0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POM_HOMPSAC0_ALV
*  INTO TABLE @DATA(IT_POM_HOMPSAC0_ALV2).
*--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_POM_HOMPSAC0_ALV INDEX 1 INTO DATA(WA_POM_HOMPSAC0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_POM_HOMPSAC0_ALV ASSIGNING <POM_HOMPSAC0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POM_HOMPSAC0_ALV>-PERNR = 1.
<POM_HOMPSAC0_ALV>-FNAME = 1.
<POM_HOMPSAC0_ALV>-ATEXT = 1.
<POM_HOMPSAC0_ALV>-EMAIL = 1.
<POM_HOMPSAC0_ALV>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_POM_HOMPSAC0_ALV INTO WA_POM_HOMPSAC0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POM_HOMPSAC0_ALV-CPNME, sy-vline,
  WA_POM_HOMPSAC0_ALV-JDATE, sy-vline,
  WA_POM_HOMPSAC0_ALV-JOBCD, sy-vline,
  WA_POM_HOMPSAC0_ALV-JBTXT, sy-vline,
  WA_POM_HOMPSAC0_ALV-PSTID, sy-vline,
  WA_POM_HOMPSAC0_ALV-BSSAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POM_HOMPSAC0_ALV 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_POM_HOMPSAC0_ALV 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_POM_HOMPSAC0_ALV INTO WA_POM_HOMPSAC0_ALV.


*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_POM_HOMPSAC0_ALV_STR, 
PERNR TYPE STRING,
FNAME TYPE STRING,
ATEXT TYPE STRING,
EMAIL TYPE STRING,
BUKRS TYPE STRING,
CPNME TYPE STRING,
JDATE TYPE STRING,
JOBCD TYPE STRING,
JBTXT TYPE STRING,
PSTID TYPE STRING,
BSSAY TYPE STRING,
HSALW TYPE STRING,
TSALW TYPE STRING,
OTALW TYPE STRING,
WAERS TYPE STRING,
NATIO TYPE STRING,
BNKSA TYPE STRING,
ZLSCH TYPE STRING,
EMFTX TYPE STRING,
BKPLZ TYPE STRING,
BKORT TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BANKP TYPE STRING,
BKONT TYPE STRING,
WGTYP TYPE STRING,
DATES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POM_HOMPSAC0_ALV_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_POM_HOMPSAC0_ALV_STR-PERNR sy-vline 
WA_POM_HOMPSAC0_ALV_STR-FNAME sy-vline 
WA_POM_HOMPSAC0_ALV_STR-ATEXT sy-vline 
WA_POM_HOMPSAC0_ALV_STR-EMAIL sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BUKRS sy-vline 
WA_POM_HOMPSAC0_ALV_STR-CPNME sy-vline 
WA_POM_HOMPSAC0_ALV_STR-JDATE sy-vline 
WA_POM_HOMPSAC0_ALV_STR-JOBCD sy-vline 
WA_POM_HOMPSAC0_ALV_STR-JBTXT sy-vline 
WA_POM_HOMPSAC0_ALV_STR-PSTID sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BSSAY sy-vline 
WA_POM_HOMPSAC0_ALV_STR-HSALW sy-vline 
WA_POM_HOMPSAC0_ALV_STR-TSALW sy-vline 
WA_POM_HOMPSAC0_ALV_STR-OTALW sy-vline 
WA_POM_HOMPSAC0_ALV_STR-WAERS sy-vline 
WA_POM_HOMPSAC0_ALV_STR-NATIO sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BNKSA sy-vline 
WA_POM_HOMPSAC0_ALV_STR-ZLSCH sy-vline 
WA_POM_HOMPSAC0_ALV_STR-EMFTX sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BKPLZ sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BKORT sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BANKS sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BANKL sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BANKN sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BANKP sy-vline 
WA_POM_HOMPSAC0_ALV_STR-BKONT sy-vline 
WA_POM_HOMPSAC0_ALV_STR-WGTYP sy-vline 
WA_POM_HOMPSAC0_ALV_STR-DATES sy-vline      INTO ld_text SEPARATED BY SPACE.

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