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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BEV1/EMLGFAD
*  INTO TABLE @DATA(IT_/BEV1/EMLGFAD2).
*--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/EMLGFAD INDEX 1 INTO DATA(WA_/BEV1/EMLGFAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BEV1/EMLGFAD>-MANDT = 1.
</BEV1/EMLGFAD>-KTOINH = 1.
</BEV1/EMLGFAD>-ERDAT = 1.
</BEV1/EMLGFAD>-VKORG = 1.
</BEV1/EMLGFAD>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BEV1/EMLGFAD-SPART, sy-vline,
  WA_/BEV1/EMLGFAD-LFDNR, sy-vline,
  WA_/BEV1/EMLGFAD-LGGRP, sy-vline,
  WA_/BEV1/EMLGFAD-MATNR, sy-vline,
  WA_/BEV1/EMLGFAD-VBELN, sy-vline,
  WA_/BEV1/EMLGFAD-FKDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BEV1/EMLGFAD 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/EMLGFAD 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/EMLGFAD INTO WA_/BEV1/EMLGFAD.


*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 ALPHA, internal->external for field KTOINH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/EMLGFAD-KTOINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/EMLGFAD-KTOINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/EMLGFAD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/EMLGFAD-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/EMLGFAD-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/EMLGFAD-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LGVBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/EMLGFAD-LGVBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/EMLGFAD-LGVBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/BEV1/EMLGFAD-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV1/EMLGFAD-MEINS.
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_/BEV1/EMLGFAD_STR, 
MANDT TYPE STRING,
KTOINH TYPE STRING,
ERDAT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
LFDNR TYPE STRING,
LGGRP TYPE STRING,
MATNR TYPE STRING,
VBELN TYPE STRING,
FKDAT TYPE STRING,
LGVBELN TYPE STRING,
LGVDAT TYPE STRING,
ARCHIV TYPE STRING,
Q01 TYPE STRING,
V01 TYPE STRING,
Q02 TYPE STRING,
V02 TYPE STRING,
Q03 TYPE STRING,
V03 TYPE STRING,
Q04 TYPE STRING,
V04 TYPE STRING,
Q05 TYPE STRING,
V05 TYPE STRING,
Q06 TYPE STRING,
V06 TYPE STRING,
Q07 TYPE STRING,
V07 TYPE STRING,
Q08 TYPE STRING,
V08 TYPE STRING,
Q09 TYPE STRING,
V09 TYPE STRING,
Q10 TYPE STRING,
V10 TYPE STRING,
Q11 TYPE STRING,
V11 TYPE STRING,
Q12 TYPE STRING,
V12 TYPE STRING,
Q13 TYPE STRING,
V13 TYPE STRING,
Q14 TYPE STRING,
V14 TYPE STRING,
Q15 TYPE STRING,
V15 TYPE STRING,
Q16 TYPE STRING,
V16 TYPE STRING,
Q17 TYPE STRING,
V17 TYPE STRING,
Q18 TYPE STRING,
V18 TYPE STRING,
Q19 TYPE STRING,
V19 TYPE STRING,
Q20 TYPE STRING,
V20 TYPE STRING,
WAERS TYPE STRING,
MEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BEV1/EMLGFAD_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/EMLGFAD_STR-MANDT sy-vline 
WA_/BEV1/EMLGFAD_STR-KTOINH sy-vline 
WA_/BEV1/EMLGFAD_STR-ERDAT sy-vline 
WA_/BEV1/EMLGFAD_STR-VKORG sy-vline 
WA_/BEV1/EMLGFAD_STR-VTWEG sy-vline 
WA_/BEV1/EMLGFAD_STR-SPART sy-vline 
WA_/BEV1/EMLGFAD_STR-LFDNR sy-vline 
WA_/BEV1/EMLGFAD_STR-LGGRP sy-vline 
WA_/BEV1/EMLGFAD_STR-MATNR sy-vline 
WA_/BEV1/EMLGFAD_STR-VBELN sy-vline 
WA_/BEV1/EMLGFAD_STR-FKDAT sy-vline 
WA_/BEV1/EMLGFAD_STR-LGVBELN sy-vline 
WA_/BEV1/EMLGFAD_STR-LGVDAT sy-vline 
WA_/BEV1/EMLGFAD_STR-ARCHIV sy-vline 
WA_/BEV1/EMLGFAD_STR-Q01 sy-vline 
WA_/BEV1/EMLGFAD_STR-V01 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q02 sy-vline 
WA_/BEV1/EMLGFAD_STR-V02 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q03 sy-vline 
WA_/BEV1/EMLGFAD_STR-V03 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q04 sy-vline 
WA_/BEV1/EMLGFAD_STR-V04 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q05 sy-vline 
WA_/BEV1/EMLGFAD_STR-V05 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q06 sy-vline 
WA_/BEV1/EMLGFAD_STR-V06 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q07 sy-vline 
WA_/BEV1/EMLGFAD_STR-V07 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q08 sy-vline 
WA_/BEV1/EMLGFAD_STR-V08 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q09 sy-vline 
WA_/BEV1/EMLGFAD_STR-V09 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q10 sy-vline 
WA_/BEV1/EMLGFAD_STR-V10 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q11 sy-vline 
WA_/BEV1/EMLGFAD_STR-V11 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q12 sy-vline 
WA_/BEV1/EMLGFAD_STR-V12 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q13 sy-vline 
WA_/BEV1/EMLGFAD_STR-V13 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q14 sy-vline 
WA_/BEV1/EMLGFAD_STR-V14 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q15 sy-vline 
WA_/BEV1/EMLGFAD_STR-V15 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q16 sy-vline 
WA_/BEV1/EMLGFAD_STR-V16 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q17 sy-vline 
WA_/BEV1/EMLGFAD_STR-V17 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q18 sy-vline 
WA_/BEV1/EMLGFAD_STR-V18 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q19 sy-vline 
WA_/BEV1/EMLGFAD_STR-V19 sy-vline 
WA_/BEV1/EMLGFAD_STR-Q20 sy-vline 
WA_/BEV1/EMLGFAD_STR-V20 sy-vline 
WA_/BEV1/EMLGFAD_STR-WAERS sy-vline 
WA_/BEV1/EMLGFAD_STR-MEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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