ABAP Select data from SAP table EM07W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EM07W 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 EM07W. 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 EM07W 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_EM07W TYPE STANDARD TABLE OF EM07W,
      WA_EM07W TYPE EM07W,
      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: <EM07W> TYPE EM07W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EM07W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EM07W
  INTO TABLE IT_EM07W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EM07W
*  INTO TABLE @DATA(IT_EM07W2).
*--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_EM07W INDEX 1 INTO DATA(WA_EM07W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EM07W ASSIGNING <EM07W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EM07W>-MATNR = 1.
<EM07W>-BWKEY = 1.
<EM07W>-BWTAR = 1.
<EM07W>-SOBKZ = 1.
<EM07W>-SKONT = 1.

ENDLOOP.

LOOP AT IT_EM07W INTO WA_EM07W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EM07W-CURTP, sy-vline,
  WA_EM07W-XRUEM, sy-vline,
  WA_EM07W-LBKUM, sy-vline,
  WA_EM07W-SALK3, sy-vline,
  WA_EM07W-SALKV, sy-vline,
  WA_EM07W-VKSAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EM07W 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_EM07W 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_EM07W INTO WA_EM07W.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EM07W-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EM07W-MATNR.
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_EM07W_STR, 
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
SOBKZ TYPE STRING,
SKONT TYPE STRING,
CURTP TYPE STRING,
XRUEM TYPE STRING,
LBKUM TYPE STRING,
SALK3 TYPE STRING,
SALKV TYPE STRING,
VKSAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EM07W_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_EM07W_STR-MATNR sy-vline 
WA_EM07W_STR-BWKEY sy-vline 
WA_EM07W_STR-BWTAR sy-vline 
WA_EM07W_STR-SOBKZ sy-vline 
WA_EM07W_STR-SKONT sy-vline 
WA_EM07W_STR-CURTP sy-vline 
WA_EM07W_STR-XRUEM sy-vline 
WA_EM07W_STR-LBKUM sy-vline 
WA_EM07W_STR-SALK3 sy-vline 
WA_EM07W_STR-SALKV sy-vline 
WA_EM07W_STR-VKSAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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