ABAP Select data from SAP table /BEV1/EM0LGMTX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BEV1/EM0LGMTX 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 /BEV1/EM0LGMTX. 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 /BEV1/EM0LGMTX 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_/BEV1/EM0LGMTX TYPE STANDARD TABLE OF /BEV1/EM0LGMTX,
      WA_/BEV1/EM0LGMTX TYPE /BEV1/EM0LGMTX,
      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: </BEV1/EM0LGMTX> TYPE /BEV1/EM0LGMTX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BEV1/EM0LGMTX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BEV1/EM0LGMTX
  INTO TABLE IT_/BEV1/EM0LGMTX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BEV1/EM0LGMTX
*  INTO TABLE @DATA(IT_/BEV1/EM0LGMTX2).
*--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_/BEV1/EM0LGMTX INDEX 1 INTO DATA(WA_/BEV1/EM0LGMTX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BEV1/EM0LGMTX ASSIGNING </BEV1/EM0LGMTX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BEV1/EM0LGMTX>-MANDT = 1.
</BEV1/EM0LGMTX>-LGFELD = 1.
</BEV1/EM0LGMTX>-FELD1 = 1.
</BEV1/EM0LGMTX>-OP1 = 1.
</BEV1/EM0LGMTX>-FELD2 = 1.

ENDLOOP.

LOOP AT IT_/BEV1/EM0LGMTX INTO WA_/BEV1/EM0LGMTX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BEV1/EM0LGMTX-OP2, sy-vline,
  WA_/BEV1/EM0LGMTX-FELD3, sy-vline,
  WA_/BEV1/EM0LGMTX-OP3, sy-vline,
  WA_/BEV1/EM0LGMTX-FELD4, sy-vline,
  WA_/BEV1/EM0LGMTX-OP4, sy-vline,
  WA_/BEV1/EM0LGMTX-FELD5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BEV1/EM0LGMTX 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_/BEV1/EM0LGMTX 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_/BEV1/EM0LGMTX INTO WA_/BEV1/EM0LGMTX.


*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_/BEV1/EM0LGMTX_STR, 
MANDT TYPE STRING,
LGFELD TYPE STRING,
FELD1 TYPE STRING,
OP1 TYPE STRING,
FELD2 TYPE STRING,
OP2 TYPE STRING,
FELD3 TYPE STRING,
OP3 TYPE STRING,
FELD4 TYPE STRING,
OP4 TYPE STRING,
FELD5 TYPE STRING,
OP5 TYPE STRING,
FELD6 TYPE STRING,
OP6 TYPE STRING,
FELD7 TYPE STRING,
OP7 TYPE STRING,
FELD8 TYPE STRING,
OP8 TYPE STRING,
FELD9 TYPE STRING,
OP9 TYPE STRING,
FELD10 TYPE STRING,
OP10 TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BEV1/EM0LGMTX_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_/BEV1/EM0LGMTX_STR-MANDT sy-vline 
WA_/BEV1/EM0LGMTX_STR-LGFELD sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD1 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP1 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD2 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP2 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD3 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP3 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD4 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP4 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD5 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP5 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD6 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP6 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD7 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP7 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD8 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP8 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD9 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP9 sy-vline 
WA_/BEV1/EM0LGMTX_STR-FELD10 sy-vline 
WA_/BEV1/EM0LGMTX_STR-OP10 sy-vline 
WA_/BEV1/EM0LGMTX_STR-ERNAM sy-vline 
WA_/BEV1/EM0LGMTX_STR-ERDAT sy-vline 
WA_/BEV1/EM0LGMTX_STR-ERZEIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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