ABAP Select data from SAP table AM61Y into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AM61Y 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 AM61Y. 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 AM61Y 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_AM61Y TYPE STANDARD TABLE OF AM61Y,
      WA_AM61Y TYPE AM61Y,
      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: <AM61Y> TYPE AM61Y.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AM61Y.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AM61Y
  INTO TABLE IT_AM61Y.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AM61Y
*  INTO TABLE @DATA(IT_AM61Y2).
*--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_AM61Y INDEX 1 INTO DATA(WA_AM61Y2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AM61Y ASSIGNING <AM61Y>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AM61Y>-PLAKZ = 1.
<AM61Y>-PLANR = 1.
<AM61Y>-DAT00 = 1.
<AM61Y>-DAT03 = 1.
<AM61Y>-MNG01 = 1.

ENDLOOP.

LOOP AT IT_AM61Y INTO WA_AM61Y.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AM61Y-MNG02, sy-vline,
  WA_AM61Y-MNG03, sy-vline,
  WA_AM61Y-FLD01, sy-vline,
  WA_AM61Y-FLG01, sy-vline,
  WA_AM61Y-FLG02, sy-vline,
  WA_AM61Y-ALINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AM61Y 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_AM61Y 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_AM61Y INTO WA_AM61Y.


*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_AM61Y_STR, 
PLAKZ TYPE STRING,
PLANR TYPE STRING,
DAT00 TYPE STRING,
DAT03 TYPE STRING,
MNG01 TYPE STRING,
MNG02 TYPE STRING,
MNG03 TYPE STRING,
FLD01 TYPE STRING,
FLG01 TYPE STRING,
FLG02 TYPE STRING,
ALINE TYPE STRING,
BLINE TYPE STRING,
FKDAY TYPE STRING,
FKDIF TYPE STRING,
GKDAY TYPE STRING,
SGDAY TYPE STRING,
FWEEK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AM61Y_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_AM61Y_STR-PLAKZ sy-vline 
WA_AM61Y_STR-PLANR sy-vline 
WA_AM61Y_STR-DAT00 sy-vline 
WA_AM61Y_STR-DAT03 sy-vline 
WA_AM61Y_STR-MNG01 sy-vline 
WA_AM61Y_STR-MNG02 sy-vline 
WA_AM61Y_STR-MNG03 sy-vline 
WA_AM61Y_STR-FLD01 sy-vline 
WA_AM61Y_STR-FLG01 sy-vline 
WA_AM61Y_STR-FLG02 sy-vline 
WA_AM61Y_STR-ALINE sy-vline 
WA_AM61Y_STR-BLINE sy-vline 
WA_AM61Y_STR-FKDAY sy-vline 
WA_AM61Y_STR-FKDIF sy-vline 
WA_AM61Y_STR-GKDAY sy-vline 
WA_AM61Y_STR-SGDAY sy-vline 
WA_AM61Y_STR-FWEEK sy-vline      INTO ld_text SEPARATED BY SPACE.

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