ABAP Select data from SAP table MAAVC3_OR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP MAAVC3_OR 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 MAAVC3_OR. 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 MAAVC3_OR 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_MAAVC3_OR TYPE STANDARD TABLE OF MAAVC3_OR,
      WA_MAAVC3_OR TYPE MAAVC3_OR,
      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: <MAAVC3_OR> TYPE MAAVC3_OR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MAAVC3_OR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MAAVC3_OR
  INTO TABLE IT_MAAVC3_OR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAAVC3_OR
*  INTO TABLE @DATA(IT_MAAVC3_OR2).
*--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_MAAVC3_OR INDEX 1 INTO DATA(WA_MAAVC3_OR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MAAVC3_OR ASSIGNING <MAAVC3_OR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAAVC3_OR>-AUFNR = 1.
<MAAVC3_OR>-KTEXT = 1.
<MAAVC3_OR>-AUFEX = 1.
<MAAVC3_OR>-OBJNR = 1.
<MAAVC3_OR>-OBJTXT = 1.

ENDLOOP.

LOOP AT IT_MAAVC3_OR INTO WA_MAAVC3_OR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAAVC3_OR-ASSIGNED, sy-vline,
  WA_MAAVC3_OR-DISTABLE, sy-vline,
  WA_MAAVC3_OR-BP_USAGE, sy-vline,
  WA_MAAVC3_OR-CUS_WARN, sy-vline,
  WA_MAAVC3_OR-STATUS, sy-vline,
  WA_MAAVC3_OR-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAAVC3_OR 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_MAAVC3_OR 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_MAAVC3_OR INTO WA_MAAVC3_OR.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAAVC3_OR-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAAVC3_OR-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFEX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAAVC3_OR-AUFEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAAVC3_OR-AUFEX.
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_MAAVC3_OR_STR, 
AUFNR TYPE STRING,
KTEXT TYPE STRING,
AUFEX TYPE STRING,
OBJNR TYPE STRING,
OBJTXT TYPE STRING,
ASSIGNED TYPE STRING,
DISTABLE TYPE STRING,
BP_USAGE TYPE STRING,
CUS_WARN TYPE STRING,
STATUS TYPE STRING,
WAERS TYPE STRING,
AMPEL TYPE STRING,
AVC_CUS_OVERALL TYPE STRING,
AVC_CUS_OBJCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAAVC3_OR_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_MAAVC3_OR_STR-AUFNR sy-vline 
WA_MAAVC3_OR_STR-KTEXT sy-vline 
WA_MAAVC3_OR_STR-AUFEX sy-vline 
WA_MAAVC3_OR_STR-OBJNR sy-vline 
WA_MAAVC3_OR_STR-OBJTXT sy-vline 
WA_MAAVC3_OR_STR-ASSIGNED sy-vline 
WA_MAAVC3_OR_STR-DISTABLE sy-vline 
WA_MAAVC3_OR_STR-BP_USAGE sy-vline 
WA_MAAVC3_OR_STR-CUS_WARN sy-vline 
WA_MAAVC3_OR_STR-STATUS sy-vline 
WA_MAAVC3_OR_STR-WAERS sy-vline 
WA_MAAVC3_OR_STR-AMPEL sy-vline 
WA_MAAVC3_OR_STR-AVC_CUS_OVERALL sy-vline 
WA_MAAVC3_OR_STR-AVC_CUS_OBJCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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