ABAP Select data from SAP table E1ACA1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1ACA1 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 E1ACA1. 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 E1ACA1 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_E1ACA1 TYPE STANDARD TABLE OF E1ACA1,
      WA_E1ACA1 TYPE E1ACA1,
      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: <E1ACA1> TYPE E1ACA1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1ACA1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1ACA1
  INTO TABLE IT_E1ACA1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1ACA1
*  INTO TABLE @DATA(IT_E1ACA12).
*--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_E1ACA1 INDEX 1 INTO DATA(WA_E1ACA12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1ACA1 ASSIGNING <E1ACA1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1ACA1>-HKONT = 1.
<E1ACA1>-SHKZG = 1.
<E1ACA1>-KSTAT = 1.
<E1ACA1>-XREF1 = 1.
<E1ACA1>-XREF2 = 1.

ENDLOOP.

LOOP AT IT_E1ACA1 INTO WA_E1ACA1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1ACA1-MWSKZ, sy-vline,
  WA_E1ACA1-KTOSL, sy-vline,
  WA_E1ACA1-TXJCD, sy-vline,
  WA_E1ACA1-XSKRL, sy-vline,
  WA_E1ACA1-ZUONR, sy-vline,
  WA_E1ACA1-SGTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1ACA1 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_E1ACA1 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_E1ACA1 INTO WA_E1ACA1.


*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_E1ACA1_STR, 
HKONT TYPE STRING,
SHKZG TYPE STRING,
KSTAT TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
MWSKZ TYPE STRING,
KTOSL TYPE STRING,
TXJCD TYPE STRING,
XSKRL TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
MATNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
PPRCTR TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
FIKRS TYPE STRING,
FIPOS TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
EPRCTR TYPE STRING,
FKART TYPE STRING,
VTWEG TYPE STRING,
KUNAG TYPE STRING,
SPART TYPE STRING,
VKORG TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
FKIMG TYPE STRING,
VRKME TYPE STRING,
FKLMG TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
MATNR_EXTERNAL TYPE STRING,
MATNR_VERSION TYPE STRING,
MATNR_GUID TYPE STRING,
BUDGET_PERIOD TYPE STRING,
MATNR_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1ACA1_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_E1ACA1_STR-HKONT sy-vline 
WA_E1ACA1_STR-SHKZG sy-vline 
WA_E1ACA1_STR-KSTAT sy-vline 
WA_E1ACA1_STR-XREF1 sy-vline 
WA_E1ACA1_STR-XREF2 sy-vline 
WA_E1ACA1_STR-MWSKZ sy-vline 
WA_E1ACA1_STR-KTOSL sy-vline 
WA_E1ACA1_STR-TXJCD sy-vline 
WA_E1ACA1_STR-XSKRL sy-vline 
WA_E1ACA1_STR-ZUONR sy-vline 
WA_E1ACA1_STR-SGTXT sy-vline 
WA_E1ACA1_STR-GSBER sy-vline 
WA_E1ACA1_STR-KOSTL sy-vline 
WA_E1ACA1_STR-AUFNR sy-vline 
WA_E1ACA1_STR-MATNR sy-vline 
WA_E1ACA1_STR-MENGE sy-vline 
WA_E1ACA1_STR-MEINS sy-vline 
WA_E1ACA1_STR-WERKS sy-vline 
WA_E1ACA1_STR-PRCTR sy-vline 
WA_E1ACA1_STR-PPRCTR sy-vline 
WA_E1ACA1_STR-PS_PSP_PNR sy-vline 
WA_E1ACA1_STR-NPLNR sy-vline 
WA_E1ACA1_STR-FIKRS sy-vline 
WA_E1ACA1_STR-FIPOS sy-vline 
WA_E1ACA1_STR-FISTL sy-vline 
WA_E1ACA1_STR-GEBER sy-vline 
WA_E1ACA1_STR-KDAUF sy-vline 
WA_E1ACA1_STR-KDPOS sy-vline 
WA_E1ACA1_STR-EPRCTR sy-vline 
WA_E1ACA1_STR-FKART sy-vline 
WA_E1ACA1_STR-VTWEG sy-vline 
WA_E1ACA1_STR-KUNAG sy-vline 
WA_E1ACA1_STR-SPART sy-vline 
WA_E1ACA1_STR-VKORG sy-vline 
WA_E1ACA1_STR-VKBUR sy-vline 
WA_E1ACA1_STR-VKGRP sy-vline 
WA_E1ACA1_STR-FKIMG sy-vline 
WA_E1ACA1_STR-VRKME sy-vline 
WA_E1ACA1_STR-FKLMG sy-vline 
WA_E1ACA1_STR-NTGEW sy-vline 
WA_E1ACA1_STR-BRGEW sy-vline 
WA_E1ACA1_STR-GEWEI sy-vline 
WA_E1ACA1_STR-VOLUM sy-vline 
WA_E1ACA1_STR-VOLEH sy-vline 
WA_E1ACA1_STR-MATNR_EXTERNAL sy-vline 
WA_E1ACA1_STR-MATNR_VERSION sy-vline 
WA_E1ACA1_STR-MATNR_GUID sy-vline 
WA_E1ACA1_STR-BUDGET_PERIOD sy-vline 
WA_E1ACA1_STR-MATNR_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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