ABAP Select data from SAP table ADJWGT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ADJWGT
*  INTO TABLE @DATA(IT_ADJWGT2).
*--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_ADJWGT INDEX 1 INTO DATA(WA_ADJWGT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ADJWGT>-LGA01 = 1.
<ADJWGT>-BET01 = 1.
<ADJWGT>-ANZ01 = 1.
<ADJWGT>-EIN01 = 1.
<ADJWGT>-OPK01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ADJWGT-LGA02, sy-vline,
  WA_ADJWGT-BET02, sy-vline,
  WA_ADJWGT-ANZ02, sy-vline,
  WA_ADJWGT-EIN02, sy-vline,
  WA_ADJWGT-OPK02, sy-vline,
  WA_ADJWGT-LGA03, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ADJWGT 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_ADJWGT 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_ADJWGT INTO WA_ADJWGT.


*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_ADJWGT_STR, 
LGA01 TYPE STRING,
BET01 TYPE STRING,
ANZ01 TYPE STRING,
EIN01 TYPE STRING,
OPK01 TYPE STRING,
LGA02 TYPE STRING,
BET02 TYPE STRING,
ANZ02 TYPE STRING,
EIN02 TYPE STRING,
OPK02 TYPE STRING,
LGA03 TYPE STRING,
BET03 TYPE STRING,
ANZ03 TYPE STRING,
EIN03 TYPE STRING,
OPK03 TYPE STRING,
LGA04 TYPE STRING,
BET04 TYPE STRING,
ANZ04 TYPE STRING,
EIN04 TYPE STRING,
OPK04 TYPE STRING,
LGA05 TYPE STRING,
BET05 TYPE STRING,
ANZ05 TYPE STRING,
EIN05 TYPE STRING,
OPK05 TYPE STRING,
LGA06 TYPE STRING,
BET06 TYPE STRING,
ANZ06 TYPE STRING,
EIN06 TYPE STRING,
OPK06 TYPE STRING,
LGA07 TYPE STRING,
BET07 TYPE STRING,
ANZ07 TYPE STRING,
EIN07 TYPE STRING,
OPK07 TYPE STRING,
LGA08 TYPE STRING,
BET08 TYPE STRING,
ANZ08 TYPE STRING,
EIN08 TYPE STRING,
OPK08 TYPE STRING,
LGA09 TYPE STRING,
BET09 TYPE STRING,
ANZ09 TYPE STRING,
EIN09 TYPE STRING,
OPK09 TYPE STRING,
LGA10 TYPE STRING,
BET10 TYPE STRING,
ANZ10 TYPE STRING,
EIN10 TYPE STRING,
OPK10 TYPE STRING,
LGA11 TYPE STRING,
BET11 TYPE STRING,
ANZ11 TYPE STRING,
EIN11 TYPE STRING,
OPK11 TYPE STRING,
LGA12 TYPE STRING,
BET12 TYPE STRING,
ANZ12 TYPE STRING,
EIN12 TYPE STRING,
OPK12 TYPE STRING,
LGA13 TYPE STRING,
BET13 TYPE STRING,
ANZ13 TYPE STRING,
EIN13 TYPE STRING,
OPK13 TYPE STRING,
LGA14 TYPE STRING,
BET14 TYPE STRING,
ANZ14 TYPE STRING,
EIN14 TYPE STRING,
OPK14 TYPE STRING,
LGA15 TYPE STRING,
BET15 TYPE STRING,
ANZ15 TYPE STRING,
EIN15 TYPE STRING,
OPK15 TYPE STRING,
LGA16 TYPE STRING,
BET16 TYPE STRING,
ANZ16 TYPE STRING,
EIN16 TYPE STRING,
OPK16 TYPE STRING,
LGA17 TYPE STRING,
BET17 TYPE STRING,
ANZ17 TYPE STRING,
EIN17 TYPE STRING,
OPK17 TYPE STRING,
LGA18 TYPE STRING,
BET18 TYPE STRING,
ANZ18 TYPE STRING,
EIN18 TYPE STRING,
OPK18 TYPE STRING,
LGA19 TYPE STRING,
BET19 TYPE STRING,
ANZ19 TYPE STRING,
EIN19 TYPE STRING,
OPK19 TYPE STRING,
LGA20 TYPE STRING,
BET20 TYPE STRING,
ANZ20 TYPE STRING,
EIN20 TYPE STRING,
OPK20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ADJWGT_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_ADJWGT_STR-LGA01 sy-vline 
WA_ADJWGT_STR-BET01 sy-vline 
WA_ADJWGT_STR-ANZ01 sy-vline 
WA_ADJWGT_STR-EIN01 sy-vline 
WA_ADJWGT_STR-OPK01 sy-vline 
WA_ADJWGT_STR-LGA02 sy-vline 
WA_ADJWGT_STR-BET02 sy-vline 
WA_ADJWGT_STR-ANZ02 sy-vline 
WA_ADJWGT_STR-EIN02 sy-vline 
WA_ADJWGT_STR-OPK02 sy-vline 
WA_ADJWGT_STR-LGA03 sy-vline 
WA_ADJWGT_STR-BET03 sy-vline 
WA_ADJWGT_STR-ANZ03 sy-vline 
WA_ADJWGT_STR-EIN03 sy-vline 
WA_ADJWGT_STR-OPK03 sy-vline 
WA_ADJWGT_STR-LGA04 sy-vline 
WA_ADJWGT_STR-BET04 sy-vline 
WA_ADJWGT_STR-ANZ04 sy-vline 
WA_ADJWGT_STR-EIN04 sy-vline 
WA_ADJWGT_STR-OPK04 sy-vline 
WA_ADJWGT_STR-LGA05 sy-vline 
WA_ADJWGT_STR-BET05 sy-vline 
WA_ADJWGT_STR-ANZ05 sy-vline 
WA_ADJWGT_STR-EIN05 sy-vline 
WA_ADJWGT_STR-OPK05 sy-vline 
WA_ADJWGT_STR-LGA06 sy-vline 
WA_ADJWGT_STR-BET06 sy-vline 
WA_ADJWGT_STR-ANZ06 sy-vline 
WA_ADJWGT_STR-EIN06 sy-vline 
WA_ADJWGT_STR-OPK06 sy-vline 
WA_ADJWGT_STR-LGA07 sy-vline 
WA_ADJWGT_STR-BET07 sy-vline 
WA_ADJWGT_STR-ANZ07 sy-vline 
WA_ADJWGT_STR-EIN07 sy-vline 
WA_ADJWGT_STR-OPK07 sy-vline 
WA_ADJWGT_STR-LGA08 sy-vline 
WA_ADJWGT_STR-BET08 sy-vline 
WA_ADJWGT_STR-ANZ08 sy-vline 
WA_ADJWGT_STR-EIN08 sy-vline 
WA_ADJWGT_STR-OPK08 sy-vline 
WA_ADJWGT_STR-LGA09 sy-vline 
WA_ADJWGT_STR-BET09 sy-vline 
WA_ADJWGT_STR-ANZ09 sy-vline 
WA_ADJWGT_STR-EIN09 sy-vline 
WA_ADJWGT_STR-OPK09 sy-vline 
WA_ADJWGT_STR-LGA10 sy-vline 
WA_ADJWGT_STR-BET10 sy-vline 
WA_ADJWGT_STR-ANZ10 sy-vline 
WA_ADJWGT_STR-EIN10 sy-vline 
WA_ADJWGT_STR-OPK10 sy-vline 
WA_ADJWGT_STR-LGA11 sy-vline 
WA_ADJWGT_STR-BET11 sy-vline 
WA_ADJWGT_STR-ANZ11 sy-vline 
WA_ADJWGT_STR-EIN11 sy-vline 
WA_ADJWGT_STR-OPK11 sy-vline 
WA_ADJWGT_STR-LGA12 sy-vline 
WA_ADJWGT_STR-BET12 sy-vline 
WA_ADJWGT_STR-ANZ12 sy-vline 
WA_ADJWGT_STR-EIN12 sy-vline 
WA_ADJWGT_STR-OPK12 sy-vline 
WA_ADJWGT_STR-LGA13 sy-vline 
WA_ADJWGT_STR-BET13 sy-vline 
WA_ADJWGT_STR-ANZ13 sy-vline 
WA_ADJWGT_STR-EIN13 sy-vline 
WA_ADJWGT_STR-OPK13 sy-vline 
WA_ADJWGT_STR-LGA14 sy-vline 
WA_ADJWGT_STR-BET14 sy-vline 
WA_ADJWGT_STR-ANZ14 sy-vline 
WA_ADJWGT_STR-EIN14 sy-vline 
WA_ADJWGT_STR-OPK14 sy-vline 
WA_ADJWGT_STR-LGA15 sy-vline 
WA_ADJWGT_STR-BET15 sy-vline 
WA_ADJWGT_STR-ANZ15 sy-vline 
WA_ADJWGT_STR-EIN15 sy-vline 
WA_ADJWGT_STR-OPK15 sy-vline 
WA_ADJWGT_STR-LGA16 sy-vline 
WA_ADJWGT_STR-BET16 sy-vline 
WA_ADJWGT_STR-ANZ16 sy-vline 
WA_ADJWGT_STR-EIN16 sy-vline 
WA_ADJWGT_STR-OPK16 sy-vline 
WA_ADJWGT_STR-LGA17 sy-vline 
WA_ADJWGT_STR-BET17 sy-vline 
WA_ADJWGT_STR-ANZ17 sy-vline 
WA_ADJWGT_STR-EIN17 sy-vline 
WA_ADJWGT_STR-OPK17 sy-vline 
WA_ADJWGT_STR-LGA18 sy-vline 
WA_ADJWGT_STR-BET18 sy-vline 
WA_ADJWGT_STR-ANZ18 sy-vline 
WA_ADJWGT_STR-EIN18 sy-vline 
WA_ADJWGT_STR-OPK18 sy-vline 
WA_ADJWGT_STR-LGA19 sy-vline 
WA_ADJWGT_STR-BET19 sy-vline 
WA_ADJWGT_STR-ANZ19 sy-vline 
WA_ADJWGT_STR-EIN19 sy-vline 
WA_ADJWGT_STR-OPK19 sy-vline 
WA_ADJWGT_STR-LGA20 sy-vline 
WA_ADJWGT_STR-BET20 sy-vline 
WA_ADJWGT_STR-ANZ20 sy-vline 
WA_ADJWGT_STR-EIN20 sy-vline 
WA_ADJWGT_STR-OPK20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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