ABAP Select data from SAP table PDRHGB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDRHGB
*  INTO TABLE @DATA(IT_PDRHGB2).
*--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_PDRHGB INDEX 1 INTO DATA(WA_PDRHGB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDRHGB>-ORG_SHORT = 1.
<PDRHGB>-ORG_STEXT = 1.
<PDRHGB>-ORG_UNIT = 1.
<PDRHGB>-ED_PERIOD = 1.
<PDRHGB>-B_TO_E = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDRHGB-FROM_TO, sy-vline,
  WA_PDRHGB-JOB_CREATE, sy-vline,
  WA_PDRHGB-JOB_SEL, sy-vline,
  WA_PDRHGB-POS_CREATE, sy-vline,
  WA_PDRHGB-POS_COUNT, sy-vline,
  WA_PDRHGB-POS_VAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDRHGB 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_PDRHGB 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_PDRHGB INTO WA_PDRHGB.


*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_PDRHGB_STR, 
ORG_SHORT TYPE STRING,
ORG_STEXT TYPE STRING,
ORG_UNIT TYPE STRING,
ED_PERIOD TYPE STRING,
B_TO_E TYPE STRING,
FROM_TO TYPE STRING,
JOB_CREATE TYPE STRING,
JOB_SEL TYPE STRING,
POS_CREATE TYPE STRING,
POS_COUNT TYPE STRING,
POS_VAL TYPE STRING,
FROM_TO1 TYPE STRING,
HOLDER TYPE STRING,
NSEARK TYPE STRING,
NTYPE TYPE STRING,
HOL_ASSIGN TYPE STRING,
LEADER_REL TYPE STRING,
PD_VIEW TYPE STRING,
GENERAL TYPE STRING,
HR_BUSINSS TYPE STRING,
REPL TYPE STRING,
STAT_USE TYPE STRING,
STAT_NUSE TYPE STRING,
STATUS TYPE STRING,
BASEDATA TYPE STRING,
POSHIE TYPE STRING,
MOREATTR TYPE STRING,
COSTASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDRHGB_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_PDRHGB_STR-ORG_SHORT sy-vline 
WA_PDRHGB_STR-ORG_STEXT sy-vline 
WA_PDRHGB_STR-ORG_UNIT sy-vline 
WA_PDRHGB_STR-ED_PERIOD sy-vline 
WA_PDRHGB_STR-B_TO_E sy-vline 
WA_PDRHGB_STR-FROM_TO sy-vline 
WA_PDRHGB_STR-JOB_CREATE sy-vline 
WA_PDRHGB_STR-JOB_SEL sy-vline 
WA_PDRHGB_STR-POS_CREATE sy-vline 
WA_PDRHGB_STR-POS_COUNT sy-vline 
WA_PDRHGB_STR-POS_VAL sy-vline 
WA_PDRHGB_STR-FROM_TO1 sy-vline 
WA_PDRHGB_STR-HOLDER sy-vline 
WA_PDRHGB_STR-NSEARK sy-vline 
WA_PDRHGB_STR-NTYPE sy-vline 
WA_PDRHGB_STR-HOL_ASSIGN sy-vline 
WA_PDRHGB_STR-LEADER_REL sy-vline 
WA_PDRHGB_STR-PD_VIEW sy-vline 
WA_PDRHGB_STR-GENERAL sy-vline 
WA_PDRHGB_STR-HR_BUSINSS sy-vline 
WA_PDRHGB_STR-REPL sy-vline 
WA_PDRHGB_STR-STAT_USE sy-vline 
WA_PDRHGB_STR-STAT_NUSE sy-vline 
WA_PDRHGB_STR-STATUS sy-vline 
WA_PDRHGB_STR-BASEDATA sy-vline 
WA_PDRHGB_STR-POSHIE sy-vline 
WA_PDRHGB_STR-MOREATTR sy-vline 
WA_PDRHGB_STR-COSTASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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