ABAP Select data from SAP table EWM_MU3_I01_AOI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EWM_MU3_I01_AOI 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 EWM_MU3_I01_AOI. 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 EWM_MU3_I01_AOI 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_EWM_MU3_I01_AOI TYPE STANDARD TABLE OF EWM_MU3_I01_AOI,
      WA_EWM_MU3_I01_AOI TYPE EWM_MU3_I01_AOI,
      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: <EWM_MU3_I01_AOI> TYPE EWM_MU3_I01_AOI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EWM_MU3_I01_AOI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EWM_MU3_I01_AOI
  INTO TABLE IT_EWM_MU3_I01_AOI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWM_MU3_I01_AOI
*  INTO TABLE @DATA(IT_EWM_MU3_I01_AOI2).
*--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_EWM_MU3_I01_AOI INDEX 1 INTO DATA(WA_EWM_MU3_I01_AOI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EWM_MU3_I01_AOI ASSIGNING <EWM_MU3_I01_AOI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWM_MU3_I01_AOI>-FLAG_ORDER = 1.
<EWM_MU3_I01_AOI>-AUFNR = 1.
<EWM_MU3_I01_AOI>-QMNUM = 1.
<EWM_MU3_I01_AOI>-KUNUM = 1.
<EWM_MU3_I01_AOI>-VKONT = 1.

ENDLOOP.

LOOP AT IT_EWM_MU3_I01_AOI INTO WA_EWM_MU3_I01_AOI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWM_MU3_I01_AOI-HVORG, sy-vline,
  WA_EWM_MU3_I01_AOI-TVORG, sy-vline,
  WA_EWM_MU3_I01_AOI-VTEXT, sy-vline,
  WA_EWM_MU3_I01_AOI-FAEDN, sy-vline,
  WA_EWM_MU3_I01_AOI-SPART, sy-vline,
  WA_EWM_MU3_I01_AOI-BETRW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWM_MU3_I01_AOI 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_EWM_MU3_I01_AOI 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_EWM_MU3_I01_AOI INTO WA_EWM_MU3_I01_AOI.


*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_EWM_MU3_I01_AOI-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I01_AOI-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I01_AOI-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I01_AOI-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I01_AOI-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I01_AOI-KUNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I01_AOI-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I01_AOI-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWM_MU3_I01_AOI-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWM_MU3_I01_AOI-OPBEL.
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_EWM_MU3_I01_AOI_STR, 
FLAG_ORDER TYPE STRING,
AUFNR TYPE STRING,
QMNUM TYPE STRING,
KUNUM TYPE STRING,
VKONT TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
VTEXT TYPE STRING,
FAEDN TYPE STRING,
SPART TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWM_MU3_I01_AOI_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_EWM_MU3_I01_AOI_STR-FLAG_ORDER sy-vline 
WA_EWM_MU3_I01_AOI_STR-AUFNR sy-vline 
WA_EWM_MU3_I01_AOI_STR-QMNUM sy-vline 
WA_EWM_MU3_I01_AOI_STR-KUNUM sy-vline 
WA_EWM_MU3_I01_AOI_STR-VKONT sy-vline 
WA_EWM_MU3_I01_AOI_STR-HVORG sy-vline 
WA_EWM_MU3_I01_AOI_STR-TVORG sy-vline 
WA_EWM_MU3_I01_AOI_STR-VTEXT sy-vline 
WA_EWM_MU3_I01_AOI_STR-FAEDN sy-vline 
WA_EWM_MU3_I01_AOI_STR-SPART sy-vline 
WA_EWM_MU3_I01_AOI_STR-BETRW sy-vline 
WA_EWM_MU3_I01_AOI_STR-WAERS sy-vline 
WA_EWM_MU3_I01_AOI_STR-OPBEL sy-vline 
WA_EWM_MU3_I01_AOI_STR-OPUPK sy-vline      INTO ld_text SEPARATED BY SPACE.

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