ABAP Select data from SAP table /DSD/HH_E1CRE101 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/HH_E1CRE101 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 /DSD/HH_E1CRE101. 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 /DSD/HH_E1CRE101 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_/DSD/HH_E1CRE101 TYPE STANDARD TABLE OF /DSD/HH_E1CRE101,
      WA_/DSD/HH_E1CRE101 TYPE /DSD/HH_E1CRE101,
      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: </DSD/HH_E1CRE101> TYPE /DSD/HH_E1CRE101.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/DSD/HH_E1CRE101.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/HH_E1CRE101
  INTO TABLE IT_/DSD/HH_E1CRE101.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/HH_E1CRE101
*  INTO TABLE @DATA(IT_/DSD/HH_E1CRE1012).
*--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_/DSD/HH_E1CRE101 INDEX 1 INTO DATA(WA_/DSD/HH_E1CRE1012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/HH_E1CRE101 ASSIGNING </DSD/HH_E1CRE101>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/HH_E1CRE101>-KLIMK = 1.
</DSD/HH_E1CRE101>-KNKLI = 1.
</DSD/HH_E1CRE101>-SAUFT = 1.
</DSD/HH_E1CRE101>-SKFOR = 1.
</DSD/HH_E1CRE101>-SSOBL = 1.

ENDLOOP.

LOOP AT IT_/DSD/HH_E1CRE101 INTO WA_/DSD/HH_E1CRE101.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/HH_E1CRE101-UEDAT, sy-vline,
  WA_/DSD/HH_E1CRE101-XCHNG, sy-vline,
  WA_/DSD/HH_E1CRE101-ERNAM, sy-vline,
  WA_/DSD/HH_E1CRE101-ERDAT, sy-vline,
  WA_/DSD/HH_E1CRE101-CTLPC, sy-vline,
  WA_/DSD/HH_E1CRE101-DTREV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/HH_E1CRE101 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_/DSD/HH_E1CRE101 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_/DSD/HH_E1CRE101 INTO WA_/DSD/HH_E1CRE101.


*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_/DSD/HH_E1CRE101_STR, 
KLIMK TYPE STRING,
KNKLI TYPE STRING,
SAUFT TYPE STRING,
SKFOR TYPE STRING,
SSOBL TYPE STRING,
UEDAT TYPE STRING,
XCHNG TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
CTLPC TYPE STRING,
DTREV TYPE STRING,
CRBLB TYPE STRING,
SBGRP TYPE STRING,
NXTRV TYPE STRING,
KRAUS TYPE STRING,
PAYDB TYPE STRING,
DBRAT TYPE STRING,
REVDB TYPE STRING,
AEDAT TYPE STRING,
AETXT TYPE STRING,
GRUPP TYPE STRING,
AENAM TYPE STRING,
SBDAT TYPE STRING,
KDGRP TYPE STRING,
CASHD TYPE STRING,
CASHA TYPE STRING,
CASHC TYPE STRING,
DBPAY TYPE STRING,
DBRTG TYPE STRING,
DBEKR TYPE STRING,
DBWAE TYPE STRING,
DBMON TYPE STRING,
ABSBT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/HH_E1CRE101_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_/DSD/HH_E1CRE101_STR-KLIMK sy-vline 
WA_/DSD/HH_E1CRE101_STR-KNKLI sy-vline 
WA_/DSD/HH_E1CRE101_STR-SAUFT sy-vline 
WA_/DSD/HH_E1CRE101_STR-SKFOR sy-vline 
WA_/DSD/HH_E1CRE101_STR-SSOBL sy-vline 
WA_/DSD/HH_E1CRE101_STR-UEDAT sy-vline 
WA_/DSD/HH_E1CRE101_STR-XCHNG sy-vline 
WA_/DSD/HH_E1CRE101_STR-ERNAM sy-vline 
WA_/DSD/HH_E1CRE101_STR-ERDAT sy-vline 
WA_/DSD/HH_E1CRE101_STR-CTLPC sy-vline 
WA_/DSD/HH_E1CRE101_STR-DTREV sy-vline 
WA_/DSD/HH_E1CRE101_STR-CRBLB sy-vline 
WA_/DSD/HH_E1CRE101_STR-SBGRP sy-vline 
WA_/DSD/HH_E1CRE101_STR-NXTRV sy-vline 
WA_/DSD/HH_E1CRE101_STR-KRAUS sy-vline 
WA_/DSD/HH_E1CRE101_STR-PAYDB sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBRAT sy-vline 
WA_/DSD/HH_E1CRE101_STR-REVDB sy-vline 
WA_/DSD/HH_E1CRE101_STR-AEDAT sy-vline 
WA_/DSD/HH_E1CRE101_STR-AETXT sy-vline 
WA_/DSD/HH_E1CRE101_STR-GRUPP sy-vline 
WA_/DSD/HH_E1CRE101_STR-AENAM sy-vline 
WA_/DSD/HH_E1CRE101_STR-SBDAT sy-vline 
WA_/DSD/HH_E1CRE101_STR-KDGRP sy-vline 
WA_/DSD/HH_E1CRE101_STR-CASHD sy-vline 
WA_/DSD/HH_E1CRE101_STR-CASHA sy-vline 
WA_/DSD/HH_E1CRE101_STR-CASHC sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBPAY sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBRTG sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBEKR sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBWAE sy-vline 
WA_/DSD/HH_E1CRE101_STR-DBMON sy-vline 
WA_/DSD/HH_E1CRE101_STR-ABSBT sy-vline      INTO ld_text SEPARATED BY SPACE.

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