ABAP Select data from SAP table RMXTT_TRIAL_MR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMXTT_TRIAL_MR
*  INTO TABLE @DATA(IT_RMXTT_TRIAL_MR2).
*--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_RMXTT_TRIAL_MR INDEX 1 INTO DATA(WA_RMXTT_TRIAL_MR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMXTT_TRIAL_MR>-MANDT = 1.
<RMXTT_TRIAL_MR>-TRIALID = 1.
<RMXTT_TRIAL_MR>-COUNTER = 1.
<RMXTT_TRIAL_MR>-PRODUCT = 1.
<RMXTT_TRIAL_MR>-VERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMXTT_TRIAL_MR-PLNGRP, sy-vline,
  WA_RMXTT_TRIAL_MR-PLCNT, sy-vline,
  WA_RMXTT_TRIAL_MR-STLAL, sy-vline,
  WA_RMXTT_TRIAL_MR-STLAN, sy-vline,
  WA_RMXTT_TRIAL_MR-AENNR, sy-vline,
  WA_RMXTT_TRIAL_MR-GENKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMXTT_TRIAL_MR 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_RMXTT_TRIAL_MR 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_RMXTT_TRIAL_MR INTO WA_RMXTT_TRIAL_MR.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMXTT_TRIAL_MR-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXTT_TRIAL_MR-AENNR.
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_RMXTT_TRIAL_MR_STR, 
MANDT TYPE STRING,
TRIALID TYPE STRING,
COUNTER TYPE STRING,
PRODUCT TYPE STRING,
VERID TYPE STRING,
PLNGRP TYPE STRING,
PLCNT TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
AENNR TYPE STRING,
GENKZ TYPE STRING,
DEL_STAT TYPE STRING,
TRF_RGUID TYPE STRING,
TRF_ICNT TYPE STRING,
TRF_RCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMXTT_TRIAL_MR_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_RMXTT_TRIAL_MR_STR-MANDT sy-vline 
WA_RMXTT_TRIAL_MR_STR-TRIALID sy-vline 
WA_RMXTT_TRIAL_MR_STR-COUNTER sy-vline 
WA_RMXTT_TRIAL_MR_STR-PRODUCT sy-vline 
WA_RMXTT_TRIAL_MR_STR-VERID sy-vline 
WA_RMXTT_TRIAL_MR_STR-PLNGRP sy-vline 
WA_RMXTT_TRIAL_MR_STR-PLCNT sy-vline 
WA_RMXTT_TRIAL_MR_STR-STLAL sy-vline 
WA_RMXTT_TRIAL_MR_STR-STLAN sy-vline 
WA_RMXTT_TRIAL_MR_STR-AENNR sy-vline 
WA_RMXTT_TRIAL_MR_STR-GENKZ sy-vline 
WA_RMXTT_TRIAL_MR_STR-DEL_STAT sy-vline 
WA_RMXTT_TRIAL_MR_STR-TRF_RGUID sy-vline 
WA_RMXTT_TRIAL_MR_STR-TRF_ICNT sy-vline 
WA_RMXTT_TRIAL_MR_STR-TRF_RCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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