ABAP Select data from SAP table E2HRTR1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2HRTR1 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 E2HRTR1. 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 E2HRTR1 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_E2HRTR1 TYPE STANDARD TABLE OF E2HRTR1,
      WA_E2HRTR1 TYPE E2HRTR1,
      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: <E2HRTR1> TYPE E2HRTR1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2HRTR1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2HRTR1
  INTO TABLE IT_E2HRTR1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2HRTR1
*  INTO TABLE @DATA(IT_E2HRTR12).
*--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_E2HRTR1 INDEX 1 INTO DATA(WA_E2HRTR12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2HRTR1 ASSIGNING <E2HRTR1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2HRTR1>-ABKRS = 1.
<E2HRTR1>-PERMO = 1.
<E2HRTR1>-PABRP = 1.
<E2HRTR1>-PABRJ = 1.
<E2HRTR1>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_E2HRTR1 INTO WA_E2HRTR1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2HRTR1-ENDDA, sy-vline,
  WA_E2HRTR1-SEQ_IN, sy-vline,
  WA_E2HRTR1-MAP_NAME, sy-vline,
  WA_E2HRTR1-BUDAT, sy-vline,
  WA_E2HRTR1-P_SPACE, sy-vline,
  WA_E2HRTR1-P_BEGIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2HRTR1 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_E2HRTR1 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_E2HRTR1 INTO WA_E2HRTR1.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_E2HRTR1-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2HRTR1-PABRJ.
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_E2HRTR1_STR, 
ABKRS TYPE STRING,
PERMO TYPE STRING,
PABRP TYPE STRING,
PABRJ TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SEQ_IN TYPE STRING,
MAP_NAME TYPE STRING,
BUDAT TYPE STRING,
P_SPACE TYPE STRING,
P_BEGIN TYPE STRING,
P_END TYPE STRING,
SOPER TYPE STRING,
BLDAT TYPE STRING,
T_SPACE TYPE STRING,
T_BEGIN TYPE STRING,
T_END TYPE STRING,
GSBER_AK TYPE STRING,
GSBER_KK TYPE STRING,
KR_SGTXT TYPE STRING,
BLART TYPE STRING,
BL_R TYPE STRING,
BL_P TYPE STRING,
FK_R TYPE STRING,
FK_P TYPE STRING,
AK_R TYPE STRING,
AK_P TYPE STRING,
BEL_SIZE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2HRTR1_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_E2HRTR1_STR-ABKRS sy-vline 
WA_E2HRTR1_STR-PERMO sy-vline 
WA_E2HRTR1_STR-PABRP sy-vline 
WA_E2HRTR1_STR-PABRJ sy-vline 
WA_E2HRTR1_STR-BEGDA sy-vline 
WA_E2HRTR1_STR-ENDDA sy-vline 
WA_E2HRTR1_STR-SEQ_IN sy-vline 
WA_E2HRTR1_STR-MAP_NAME sy-vline 
WA_E2HRTR1_STR-BUDAT sy-vline 
WA_E2HRTR1_STR-P_SPACE sy-vline 
WA_E2HRTR1_STR-P_BEGIN sy-vline 
WA_E2HRTR1_STR-P_END sy-vline 
WA_E2HRTR1_STR-SOPER sy-vline 
WA_E2HRTR1_STR-BLDAT sy-vline 
WA_E2HRTR1_STR-T_SPACE sy-vline 
WA_E2HRTR1_STR-T_BEGIN sy-vline 
WA_E2HRTR1_STR-T_END sy-vline 
WA_E2HRTR1_STR-GSBER_AK sy-vline 
WA_E2HRTR1_STR-GSBER_KK sy-vline 
WA_E2HRTR1_STR-KR_SGTXT sy-vline 
WA_E2HRTR1_STR-BLART sy-vline 
WA_E2HRTR1_STR-BL_R sy-vline 
WA_E2HRTR1_STR-BL_P sy-vline 
WA_E2HRTR1_STR-FK_R sy-vline 
WA_E2HRTR1_STR-FK_P sy-vline 
WA_E2HRTR1_STR-AK_R sy-vline 
WA_E2HRTR1_STR-AK_P sy-vline 
WA_E2HRTR1_STR-BEL_SIZE sy-vline      INTO ld_text SEPARATED BY SPACE.

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