ABAP Select data from SAP table MSAM10_MR_REGISTER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MSAM10_MR_REGISTER 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 MSAM10_MR_REGISTER. 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 MSAM10_MR_REGISTER 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_MSAM10_MR_REGISTER TYPE STANDARD TABLE OF MSAM10_MR_REGISTER,
      WA_MSAM10_MR_REGISTER TYPE MSAM10_MR_REGISTER,
      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: <MSAM10_MR_REGISTER> TYPE MSAM10_MR_REGISTER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MSAM10_MR_REGISTER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MSAM10_MR_REGISTER
  INTO TABLE IT_MSAM10_MR_REGISTER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSAM10_MR_REGISTER
*  INTO TABLE @DATA(IT_MSAM10_MR_REGISTER2).
*--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_MSAM10_MR_REGISTER INDEX 1 INTO DATA(WA_MSAM10_MR_REGISTER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MSAM10_MR_REGISTER ASSIGNING <MSAM10_MR_REGISTER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSAM10_MR_REGISTER>-LOCAL_KEY = 1.
<MSAM10_MR_REGISTER>-EQUNRNEU = 1.
<MSAM10_MR_REGISTER>-EQUNRALT = 1.
<MSAM10_MR_REGISTER>-MATNR = 1.
<MSAM10_MR_REGISTER>-GERAETNEU = 1.

ENDLOOP.

LOOP AT IT_MSAM10_MR_REGISTER INTO WA_MSAM10_MR_REGISTER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSAM10_MR_REGISTER-MATNRALT, sy-vline,
  WA_MSAM10_MR_REGISTER-GERAETALT, sy-vline,
  WA_MSAM10_MR_REGISTER-ZWNUMMERE, sy-vline,
  WA_MSAM10_MR_REGISTER-ZWNUMMERA, sy-vline,
  WA_MSAM10_MR_REGISTER-KENNZIFFE, sy-vline,
  WA_MSAM10_MR_REGISTER-ZWSTANDCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSAM10_MR_REGISTER 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_MSAM10_MR_REGISTER 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_MSAM10_MR_REGISTER INTO WA_MSAM10_MR_REGISTER.


*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 EQUNRNEU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-EQUNRNEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-EQUNRNEU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNRALT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-EQUNRALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-EQUNRALT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAETNEU
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-GERAETNEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-GERAETNEU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNRALT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-MATNRALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-MATNRALT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAETALT
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_MSAM10_MR_REGISTER-GERAETALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSAM10_MR_REGISTER-GERAETALT.
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_MSAM10_MR_REGISTER_STR, 
LOCAL_KEY TYPE STRING,
EQUNRNEU TYPE STRING,
EQUNRALT TYPE STRING,
MATNR TYPE STRING,
GERAETNEU TYPE STRING,
MATNRALT TYPE STRING,
GERAETALT TYPE STRING,
ZWNUMMERE TYPE STRING,
ZWNUMMERA TYPE STRING,
KENNZIFFE TYPE STRING,
ZWSTANDCE TYPE STRING,
ZWSTANDCA TYPE STRING,
ZWDATE TYPE STRING,
ZWTIME TYPE STRING,
GVERRECH TYPE STRING,
TARIFART TYPE STRING,
PREISKLAE TYPE STRING,
KONDIGRE TYPE STRING,
PROPROZE TYPE STRING,
PROFESTE TYPE STRING,
ZEITRAUME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSAM10_MR_REGISTER_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_MSAM10_MR_REGISTER_STR-LOCAL_KEY sy-vline 
WA_MSAM10_MR_REGISTER_STR-EQUNRNEU sy-vline 
WA_MSAM10_MR_REGISTER_STR-EQUNRALT sy-vline 
WA_MSAM10_MR_REGISTER_STR-MATNR sy-vline 
WA_MSAM10_MR_REGISTER_STR-GERAETNEU sy-vline 
WA_MSAM10_MR_REGISTER_STR-MATNRALT sy-vline 
WA_MSAM10_MR_REGISTER_STR-GERAETALT sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWNUMMERE sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWNUMMERA sy-vline 
WA_MSAM10_MR_REGISTER_STR-KENNZIFFE sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWSTANDCE sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWSTANDCA sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWDATE sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZWTIME sy-vline 
WA_MSAM10_MR_REGISTER_STR-GVERRECH sy-vline 
WA_MSAM10_MR_REGISTER_STR-TARIFART sy-vline 
WA_MSAM10_MR_REGISTER_STR-PREISKLAE sy-vline 
WA_MSAM10_MR_REGISTER_STR-KONDIGRE sy-vline 
WA_MSAM10_MR_REGISTER_STR-PROPROZE sy-vline 
WA_MSAM10_MR_REGISTER_STR-PROFESTE sy-vline 
WA_MSAM10_MR_REGISTER_STR-ZEITRAUME sy-vline      INTO ld_text SEPARATED BY SPACE.

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