ABAP Select data from SAP table POM_OH_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP POM_OH_DATA 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_OH_DATA. 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_OH_DATA 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_OH_DATA TYPE STANDARD TABLE OF POM_OH_DATA,
      WA_POM_OH_DATA TYPE POM_OH_DATA,
      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_OH_DATA> TYPE POM_OH_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POM_OH_DATA
*  INTO TABLE @DATA(IT_POM_OH_DATA2).
*--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_OH_DATA INDEX 1 INTO DATA(WA_POM_OH_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POM_OH_DATA>-ENAME = 1.
<POM_OH_DATA>-PERNR = 1.
<POM_OH_DATA>-EMAIL = 1.
<POM_OH_DATA>-PLSTX = 1.
<POM_OH_DATA>-BUTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POM_OH_DATA-BSSAY, sy-vline,
  WA_POM_OH_DATA-BSSTX, sy-vline,
  WA_POM_OH_DATA-ACCDCR, sy-vline,
  WA_POM_OH_DATA-ACCSUM, sy-vline,
  WA_POM_OH_DATA-PRACC, sy-vline,
  WA_POM_OH_DATA-PASIC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POM_OH_DATA 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_OH_DATA 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_OH_DATA INTO WA_POM_OH_DATA.


*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_OH_DATA_STR, 
ENAME TYPE STRING,
PERNR TYPE STRING,
EMAIL TYPE STRING,
PLSTX TYPE STRING,
BUTXT TYPE STRING,
BSSAY TYPE STRING,
BSSTX TYPE STRING,
ACCDCR TYPE STRING,
ACCSUM TYPE STRING,
PRACC TYPE STRING,
PASIC TYPE STRING,
PASIE TYPE STRING,
PASIN TYPE STRING,
SITYP TYPE STRING,
PASIV TYPE STRING,
ERPASIN TYPE STRING,
SINAME TYPE STRING,
SIPH TYPE STRING,
SIEMAIL TYPE STRING,
ERADDR TYPE STRING,
EEADDR TYPE STRING,
TELNR TYPE STRING,
CITY TYPE STRING,
ACDAT TYPE STRING,
ACTIM TYPE STRING,
ACTYP TYPE STRING,
ACRPT TYPE STRING,
ACPLC TYPE STRING,
HSDTL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POM_OH_DATA_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_OH_DATA_STR-ENAME sy-vline 
WA_POM_OH_DATA_STR-PERNR sy-vline 
WA_POM_OH_DATA_STR-EMAIL sy-vline 
WA_POM_OH_DATA_STR-PLSTX sy-vline 
WA_POM_OH_DATA_STR-BUTXT sy-vline 
WA_POM_OH_DATA_STR-BSSAY sy-vline 
WA_POM_OH_DATA_STR-BSSTX sy-vline 
WA_POM_OH_DATA_STR-ACCDCR sy-vline 
WA_POM_OH_DATA_STR-ACCSUM sy-vline 
WA_POM_OH_DATA_STR-PRACC sy-vline 
WA_POM_OH_DATA_STR-PASIC sy-vline 
WA_POM_OH_DATA_STR-PASIE sy-vline 
WA_POM_OH_DATA_STR-PASIN sy-vline 
WA_POM_OH_DATA_STR-SITYP sy-vline 
WA_POM_OH_DATA_STR-PASIV sy-vline 
WA_POM_OH_DATA_STR-ERPASIN sy-vline 
WA_POM_OH_DATA_STR-SINAME sy-vline 
WA_POM_OH_DATA_STR-SIPH sy-vline 
WA_POM_OH_DATA_STR-SIEMAIL sy-vline 
WA_POM_OH_DATA_STR-ERADDR sy-vline 
WA_POM_OH_DATA_STR-EEADDR sy-vline 
WA_POM_OH_DATA_STR-TELNR sy-vline 
WA_POM_OH_DATA_STR-CITY sy-vline 
WA_POM_OH_DATA_STR-ACDAT sy-vline 
WA_POM_OH_DATA_STR-ACTIM sy-vline 
WA_POM_OH_DATA_STR-ACTYP sy-vline 
WA_POM_OH_DATA_STR-ACRPT sy-vline 
WA_POM_OH_DATA_STR-ACPLC sy-vline 
WA_POM_OH_DATA_STR-HSDTL sy-vline      INTO ld_text SEPARATED BY SPACE.

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