ABAP Select data from SAP table E1ACH3 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1ACH3 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 E1ACH3. 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 E1ACH3 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_E1ACH3 TYPE STANDARD TABLE OF E1ACH3,
      WA_E1ACH3 TYPE E1ACH3,
      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: <E1ACH3> TYPE E1ACH3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1ACH3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1ACH3
  INTO TABLE IT_E1ACH3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1ACH3
*  INTO TABLE @DATA(IT_E1ACH32).
*--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_E1ACH3 INDEX 1 INTO DATA(WA_E1ACH32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1ACH3 ASSIGNING <E1ACH3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1ACH3>-AWKEY = 1.
<E1ACH3>-AWSYS = 1.
<E1ACH3>-USNAM = 1.
<E1ACH3>-BKTXT = 1.
<E1ACH3>-AWKEY_REV = 1.

ENDLOOP.

LOOP AT IT_E1ACH3 INTO WA_E1ACH3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1ACH3-BUKRS, sy-vline,
  WA_E1ACH3-BELNR, sy-vline,
  WA_E1ACH3-GJAHR, sy-vline,
  WA_E1ACH3-BLDAT, sy-vline,
  WA_E1ACH3-BUDAT, sy-vline,
  WA_E1ACH3-WWERT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1ACH3 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_E1ACH3 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_E1ACH3 INTO WA_E1ACH3.


*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_E1ACH3_STR, 
AWKEY TYPE STRING,
AWSYS TYPE STRING,
USNAM TYPE STRING,
BKTXT TYPE STRING,
AWKEY_REV TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WWERT TYPE STRING,
MONAT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
CONFIR TYPE STRING,
LANGU TYPE STRING,
AMOUNT TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1ACH3_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_E1ACH3_STR-AWKEY sy-vline 
WA_E1ACH3_STR-AWSYS sy-vline 
WA_E1ACH3_STR-USNAM sy-vline 
WA_E1ACH3_STR-BKTXT sy-vline 
WA_E1ACH3_STR-AWKEY_REV sy-vline 
WA_E1ACH3_STR-BUKRS sy-vline 
WA_E1ACH3_STR-BELNR sy-vline 
WA_E1ACH3_STR-GJAHR sy-vline 
WA_E1ACH3_STR-BLDAT sy-vline 
WA_E1ACH3_STR-BUDAT sy-vline 
WA_E1ACH3_STR-WWERT sy-vline 
WA_E1ACH3_STR-MONAT sy-vline 
WA_E1ACH3_STR-BLART sy-vline 
WA_E1ACH3_STR-XBLNR sy-vline 
WA_E1ACH3_STR-CONFIR sy-vline 
WA_E1ACH3_STR-LANGU sy-vline 
WA_E1ACH3_STR-AMOUNT sy-vline 
WA_E1ACH3_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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