ABAP Select data from SAP table POM_HOMPSAC0_DATES 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_DATES 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_DATES. 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_DATES 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_DATES TYPE STANDARD TABLE OF POM_HOMPSAC0_DATES,
      WA_POM_HOMPSAC0_DATES TYPE POM_HOMPSAC0_DATES,
      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_DATES> TYPE POM_HOMPSAC0_DATES.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_POM_HOMPSAC0_DATES.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM POM_HOMPSAC0_DATES
  INTO TABLE IT_POM_HOMPSAC0_DATES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POM_HOMPSAC0_DATES
*  INTO TABLE @DATA(IT_POM_HOMPSAC0_DATES2).
*--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_DATES INDEX 1 INTO DATA(WA_POM_HOMPSAC0_DATES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_POM_HOMPSAC0_DATES ASSIGNING <POM_HOMPSAC0_DATES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POM_HOMPSAC0_DATES>-PERNR = 1.
<POM_HOMPSAC0_DATES>-INFTY = 1.
<POM_HOMPSAC0_DATES>-SUBTY = 1.
<POM_HOMPSAC0_DATES>-OBJPS = 1.
<POM_HOMPSAC0_DATES>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_POM_HOMPSAC0_DATES INTO WA_POM_HOMPSAC0_DATES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POM_HOMPSAC0_DATES-ENDDA, sy-vline,
  WA_POM_HOMPSAC0_DATES-BEGDA, sy-vline,
  WA_POM_HOMPSAC0_DATES-SEQNR, sy-vline,
  WA_POM_HOMPSAC0_DATES-AEDTM, sy-vline,
  WA_POM_HOMPSAC0_DATES-UNAME, sy-vline,
  WA_POM_HOMPSAC0_DATES-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POM_HOMPSAC0_DATES 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_DATES 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_DATES INTO WA_POM_HOMPSAC0_DATES.


*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_DATES_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
DAR01 TYPE STRING,
DAT01 TYPE STRING,
DAR02 TYPE STRING,
DAT02 TYPE STRING,
DAR03 TYPE STRING,
DAT03 TYPE STRING,
DAR04 TYPE STRING,
DAT04 TYPE STRING,
DAR05 TYPE STRING,
DAT05 TYPE STRING,
DAR06 TYPE STRING,
DAT06 TYPE STRING,
DAR07 TYPE STRING,
DAT07 TYPE STRING,
DAR08 TYPE STRING,
DAT08 TYPE STRING,
DAR09 TYPE STRING,
DAT09 TYPE STRING,
DAR10 TYPE STRING,
DAT10 TYPE STRING,
DAR11 TYPE STRING,
DAT11 TYPE STRING,
DAR12 TYPE STRING,
DAT12 TYPE STRING,
DAR13 TYPE STRING,
DAT13 TYPE STRING,
DAR14 TYPE STRING,
DAT14 TYPE STRING,
DAR15 TYPE STRING,
DAT15 TYPE STRING,
DAR16 TYPE STRING,
DAT16 TYPE STRING,
DAR17 TYPE STRING,
DAT17 TYPE STRING,
DAR18 TYPE STRING,
DAT18 TYPE STRING,
DAR19 TYPE STRING,
DAT19 TYPE STRING,
DAR20 TYPE STRING,
DAT20 TYPE STRING,
DAR21 TYPE STRING,
DAT21 TYPE STRING,
DAR22 TYPE STRING,
DAT22 TYPE STRING,
DAR23 TYPE STRING,
DAT23 TYPE STRING,
DAR24 TYPE STRING,
DAT24 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POM_HOMPSAC0_DATES_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_DATES_STR-PERNR sy-vline 
WA_POM_HOMPSAC0_DATES_STR-INFTY sy-vline 
WA_POM_HOMPSAC0_DATES_STR-SUBTY sy-vline 
WA_POM_HOMPSAC0_DATES_STR-OBJPS sy-vline 
WA_POM_HOMPSAC0_DATES_STR-SPRPS sy-vline 
WA_POM_HOMPSAC0_DATES_STR-ENDDA sy-vline 
WA_POM_HOMPSAC0_DATES_STR-BEGDA sy-vline 
WA_POM_HOMPSAC0_DATES_STR-SEQNR sy-vline 
WA_POM_HOMPSAC0_DATES_STR-AEDTM sy-vline 
WA_POM_HOMPSAC0_DATES_STR-UNAME sy-vline 
WA_POM_HOMPSAC0_DATES_STR-HISTO sy-vline 
WA_POM_HOMPSAC0_DATES_STR-ITXEX sy-vline 
WA_POM_HOMPSAC0_DATES_STR-REFEX sy-vline 
WA_POM_HOMPSAC0_DATES_STR-ORDEX sy-vline 
WA_POM_HOMPSAC0_DATES_STR-ITBLD sy-vline 
WA_POM_HOMPSAC0_DATES_STR-PREAS sy-vline 
WA_POM_HOMPSAC0_DATES_STR-FLAG1 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-FLAG2 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-FLAG3 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-FLAG4 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-RESE1 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-RESE2 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-GRPVL sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR01 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT01 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR02 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT02 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR03 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT03 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR04 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT04 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR05 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT05 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR06 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT06 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR07 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT07 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR08 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT08 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR09 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT09 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR10 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT10 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR11 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT11 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR12 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT12 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR13 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT13 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR14 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT14 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR15 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT15 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR16 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT16 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR17 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT17 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR18 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT18 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR19 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT19 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR20 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT20 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR21 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT21 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR22 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT22 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR23 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT23 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAR24 sy-vline 
WA_POM_HOMPSAC0_DATES_STR-DAT24 sy-vline      INTO ld_text SEPARATED BY SPACE.

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