ABAP Select data from SAP table MOB01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MOB01 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 MOB01. 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 MOB01 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_MOB01 TYPE STANDARD TABLE OF MOB01,
      WA_MOB01 TYPE MOB01,
      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: <MOB01> TYPE MOB01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MOB01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MOB01
  INTO TABLE IT_MOB01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MOB01
*  INTO TABLE @DATA(IT_MOB012).
*--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_MOB01 INDEX 1 INTO DATA(WA_MOB012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MOB01 ASSIGNING <MOB01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MOB01>-MANDT = 1.
<MOB01>-XDARK = 1.
<MOB01>-TRTYP = 1.
<MOB01>-LVORM = 1.
<MOB01>-UCMAO = 1.

ENDLOOP.

LOOP AT IT_MOB01 INTO WA_MOB01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MOB01-UCWRK, sy-vline,
  WA_MOB01-UCMAT, sy-vline,
  WA_MOB01-UCCHA, sy-vline,
  WA_MOB01-ORCHA, sy-vline,
  WA_MOB01-UCMCH, sy-vline,
  WA_MOB01-UCTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MOB01 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_MOB01 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_MOB01 INTO WA_MOB01.


*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 MATN1, internal->external for field UCMAO
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-UCMAO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-UCMAO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UCMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-UCMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-UCMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-AJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-AJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BSTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-BSTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-BSTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field REF_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MOB01-REF_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MOB01-REF_MATNR.
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_MOB01_STR, 
MANDT TYPE STRING,
XDARK TYPE STRING,
TRTYP TYPE STRING,
LVORM TYPE STRING,
UCMAO TYPE STRING,
UCWRK TYPE STRING,
UCMAT TYPE STRING,
UCCHA TYPE STRING,
ORCHA TYPE STRING,
UCMCH TYPE STRING,
UCTXT TYPE STRING,
AJAHR TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
VERID TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BSTNR TYPE STRING,
BSTPO TYPE STRING,
DATUM TYPE STRING,
UCREF TYPE STRING,
REF_WERKS TYPE STRING,
REF_MATNR TYPE STRING,
REF_CHARG TYPE STRING,
UCEXT TYPE STRING,
UCOKAY TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
PLANT_NAME TYPE STRING,
ATRKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MOB01_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_MOB01_STR-MANDT sy-vline 
WA_MOB01_STR-XDARK sy-vline 
WA_MOB01_STR-TRTYP sy-vline 
WA_MOB01_STR-LVORM sy-vline 
WA_MOB01_STR-UCMAO sy-vline 
WA_MOB01_STR-UCWRK sy-vline 
WA_MOB01_STR-UCMAT sy-vline 
WA_MOB01_STR-UCCHA sy-vline 
WA_MOB01_STR-ORCHA sy-vline 
WA_MOB01_STR-UCMCH sy-vline 
WA_MOB01_STR-UCTXT sy-vline 
WA_MOB01_STR-AJAHR sy-vline 
WA_MOB01_STR-AUFNR sy-vline 
WA_MOB01_STR-POSNR sy-vline 
WA_MOB01_STR-VERID sy-vline 
WA_MOB01_STR-MATNR sy-vline 
WA_MOB01_STR-WERKS sy-vline 
WA_MOB01_STR-BSTNR sy-vline 
WA_MOB01_STR-BSTPO sy-vline 
WA_MOB01_STR-DATUM sy-vline 
WA_MOB01_STR-UCREF sy-vline 
WA_MOB01_STR-REF_WERKS sy-vline 
WA_MOB01_STR-REF_MATNR sy-vline 
WA_MOB01_STR-REF_CHARG sy-vline 
WA_MOB01_STR-UCEXT sy-vline 
WA_MOB01_STR-UCOKAY sy-vline 
WA_MOB01_STR-AENAM sy-vline 
WA_MOB01_STR-AEDAT sy-vline 
WA_MOB01_STR-PLANT_NAME sy-vline 
WA_MOB01_STR-ATRKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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