ABAP Select data from SAP table RMXMS_PHASE_REL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMXMS_PHASE_REL
*  INTO TABLE @DATA(IT_RMXMS_PHASE_REL2).
*--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_RMXMS_PHASE_REL INDEX 1 INTO DATA(WA_RMXMS_PHASE_REL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMXMS_PHASE_REL>-PLAB_KEY = 1.
<RMXMS_PHASE_REL>-MANDT = 1.
<RMXMS_PHASE_REL>-PLNTY = 1.
<RMXMS_PHASE_REL>-PLNNR = 1.
<RMXMS_PHASE_REL>-PLNAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMXMS_PHASE_REL-PLNKN, sy-vline,
  WA_RMXMS_PHASE_REL-PLNRN, sy-vline,
  WA_RMXMS_PHASE_REL-ALNRN, sy-vline,
  WA_RMXMS_PHASE_REL-KNNRN, sy-vline,
  WA_RMXMS_PHASE_REL-AOBAR, sy-vline,
  WA_RMXMS_PHASE_REL-MIMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMXMS_PHASE_REL 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_RMXMS_PHASE_REL 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_RMXMS_PHASE_REL INTO WA_RMXMS_PHASE_REL.


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

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

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

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

*Conversion exit AOBAR, internal->external for field AOBAR
CALL FUNCTION 'CONVERSION_EXIT_AOBAR_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_PHASE_REL-AOBAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_PHASE_REL-AOBAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AOBAR, internal->external for field AOBAR
CALL FUNCTION 'CONVERSION_EXIT_AOBAR_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_PHASE_REL-AOBAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_PHASE_REL-AOBAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ZEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_PHASE_REL-ZEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_PHASE_REL-ZEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_PHASE_REL-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_PHASE_REL-AENNR_AUS.
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_RMXMS_PHASE_REL_STR, 
PLAB_KEY TYPE STRING,
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNKN TYPE STRING,
PLNRN TYPE STRING,
ALNRN TYPE STRING,
KNNRN TYPE STRING,
AOBAR TYPE STRING,
MIMAX TYPE STRING,
ZAEHL TYPE STRING,
PLAB_GR TYPE STRING,
AOBAR TYPE STRING,
PLAB_MR TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
ZEINH TYPE STRING,
DAUER TYPE STRING,
DAUKZ TYPE STRING,
VORNC TYPE STRING,
NCVOR TYPE STRING,
LOEKZ TYPE STRING,
KALID TYPE STRING,
PRZNT TYPE STRING,
PROVG TYPE STRING,
ARBID TYPE STRING,
WERKS TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
DAUERMAX TYPE STRING,
VBKZ TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
FLG_SEL TYPE STRING,
RELATED_PHASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMXMS_PHASE_REL_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_RMXMS_PHASE_REL_STR-PLAB_KEY sy-vline 
WA_RMXMS_PHASE_REL_STR-MANDT sy-vline 
WA_RMXMS_PHASE_REL_STR-PLNTY sy-vline 
WA_RMXMS_PHASE_REL_STR-PLNNR sy-vline 
WA_RMXMS_PHASE_REL_STR-PLNAL sy-vline 
WA_RMXMS_PHASE_REL_STR-PLNKN sy-vline 
WA_RMXMS_PHASE_REL_STR-PLNRN sy-vline 
WA_RMXMS_PHASE_REL_STR-ALNRN sy-vline 
WA_RMXMS_PHASE_REL_STR-KNNRN sy-vline 
WA_RMXMS_PHASE_REL_STR-AOBAR sy-vline 
WA_RMXMS_PHASE_REL_STR-MIMAX sy-vline 
WA_RMXMS_PHASE_REL_STR-ZAEHL sy-vline 
WA_RMXMS_PHASE_REL_STR-PLAB_GR sy-vline 
WA_RMXMS_PHASE_REL_STR-AOBAR sy-vline 
WA_RMXMS_PHASE_REL_STR-PLAB_MR sy-vline 
WA_RMXMS_PHASE_REL_STR-DATUV sy-vline 
WA_RMXMS_PHASE_REL_STR-TECHV sy-vline 
WA_RMXMS_PHASE_REL_STR-AENNR sy-vline 
WA_RMXMS_PHASE_REL_STR-ZEINH sy-vline 
WA_RMXMS_PHASE_REL_STR-DAUER sy-vline 
WA_RMXMS_PHASE_REL_STR-DAUKZ sy-vline 
WA_RMXMS_PHASE_REL_STR-VORNC sy-vline 
WA_RMXMS_PHASE_REL_STR-NCVOR sy-vline 
WA_RMXMS_PHASE_REL_STR-LOEKZ sy-vline 
WA_RMXMS_PHASE_REL_STR-KALID sy-vline 
WA_RMXMS_PHASE_REL_STR-PRZNT sy-vline 
WA_RMXMS_PHASE_REL_STR-PROVG sy-vline 
WA_RMXMS_PHASE_REL_STR-ARBID sy-vline 
WA_RMXMS_PHASE_REL_STR-WERKS sy-vline 
WA_RMXMS_PHASE_REL_STR-ANDAT sy-vline 
WA_RMXMS_PHASE_REL_STR-ANNAM sy-vline 
WA_RMXMS_PHASE_REL_STR-AEDAT sy-vline 
WA_RMXMS_PHASE_REL_STR-AENAM sy-vline 
WA_RMXMS_PHASE_REL_STR-DAUERMAX sy-vline 
WA_RMXMS_PHASE_REL_STR-VBKZ sy-vline 
WA_RMXMS_PHASE_REL_STR-DATUB sy-vline 
WA_RMXMS_PHASE_REL_STR-AENNR_AUS sy-vline 
WA_RMXMS_PHASE_REL_STR-FLG_SEL sy-vline 
WA_RMXMS_PHASE_REL_STR-RELATED_PHASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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