ABAP Select data from SAP table E3T438M into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3T438M 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 E3T438M. 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 E3T438M 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_E3T438M TYPE STANDARD TABLE OF E3T438M,
      WA_E3T438M TYPE E3T438M,
      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: <E3T438M> TYPE E3T438M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3T438M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3T438M
  INTO TABLE IT_E3T438M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3T438M
*  INTO TABLE @DATA(IT_E3T438M2).
*--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_E3T438M INDEX 1 INTO DATA(WA_E3T438M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3T438M ASSIGNING <E3T438M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3T438M>-MSGFN = 1.
<E3T438M>-WERKS = 1.
<E3T438M>-MTART = 1.
<E3T438M>-BANER = 1.
<E3T438M>-DISER = 1.

ENDLOOP.

LOOP AT IT_E3T438M INTO WA_E3T438M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3T438M-UMTHZ, sy-vline,
  WA_E3T438M-FIXHZ, sy-vline,
  WA_E3T438M-PLAHZ, sy-vline,
  WA_E3T438M-SBDIS, sy-vline,
  WA_E3T438M-LIFKZ, sy-vline,
  WA_E3T438M-GTERM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3T438M 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_E3T438M 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_E3T438M INTO WA_E3T438M.


*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_E3T438M_STR, 
MSGFN TYPE STRING,
WERKS TYPE STRING,
MTART TYPE STRING,
BANER TYPE STRING,
DISER TYPE STRING,
UMTHZ TYPE STRING,
FIXHZ TYPE STRING,
PLAHZ TYPE STRING,
SBDIS TYPE STRING,
LIFKZ TYPE STRING,
GTERM TYPE STRING,
KZDRB TYPE STRING,
XFAT1 TYPE STRING,
XFAT2 TYPE STRING,
VWVOR TYPE STRING,
VWVER TYPE STRING,
PRREG TYPE STRING,
VRMOD TYPE STRING,
VINT1 TYPE STRING,
VINT2 TYPE STRING,
STRGR TYPE STRING,
RESHZ TYPE STRING,
ANDIS TYPE STRING,
AUART TYPE STRING,
AUAR2 TYPE STRING,
PLSEL TYPE STRING,
RVPKZ TYPE STRING,
RESVP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3T438M_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_E3T438M_STR-MSGFN sy-vline 
WA_E3T438M_STR-WERKS sy-vline 
WA_E3T438M_STR-MTART sy-vline 
WA_E3T438M_STR-BANER sy-vline 
WA_E3T438M_STR-DISER sy-vline 
WA_E3T438M_STR-UMTHZ sy-vline 
WA_E3T438M_STR-FIXHZ sy-vline 
WA_E3T438M_STR-PLAHZ sy-vline 
WA_E3T438M_STR-SBDIS sy-vline 
WA_E3T438M_STR-LIFKZ sy-vline 
WA_E3T438M_STR-GTERM sy-vline 
WA_E3T438M_STR-KZDRB sy-vline 
WA_E3T438M_STR-XFAT1 sy-vline 
WA_E3T438M_STR-XFAT2 sy-vline 
WA_E3T438M_STR-VWVOR sy-vline 
WA_E3T438M_STR-VWVER sy-vline 
WA_E3T438M_STR-PRREG sy-vline 
WA_E3T438M_STR-VRMOD sy-vline 
WA_E3T438M_STR-VINT1 sy-vline 
WA_E3T438M_STR-VINT2 sy-vline 
WA_E3T438M_STR-STRGR sy-vline 
WA_E3T438M_STR-RESHZ sy-vline 
WA_E3T438M_STR-ANDIS sy-vline 
WA_E3T438M_STR-AUART sy-vline 
WA_E3T438M_STR-AUAR2 sy-vline 
WA_E3T438M_STR-PLSEL sy-vline 
WA_E3T438M_STR-RVPKZ sy-vline 
WA_E3T438M_STR-RESVP sy-vline      INTO ld_text SEPARATED BY SPACE.

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