ABAP Select data from SAP table /MRSS/T_AAFVU into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MRSS/T_AAFVU 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 /MRSS/T_AAFVU. 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 /MRSS/T_AAFVU 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_/MRSS/T_AAFVU TYPE STANDARD TABLE OF /MRSS/T_AAFVU,
      WA_/MRSS/T_AAFVU TYPE /MRSS/T_AAFVU,
      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: </MRSS/T_AAFVU> TYPE /MRSS/T_AAFVU.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MRSS/T_AAFVU
  INTO TABLE IT_/MRSS/T_AAFVU.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_AAFVU
*  INTO TABLE @DATA(IT_/MRSS/T_AAFVU2).
*--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_/MRSS/T_AAFVU INDEX 1 INTO DATA(WA_/MRSS/T_AAFVU2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MRSS/T_AAFVU ASSIGNING </MRSS/T_AAFVU>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_AAFVU>-MANDT = 1.
</MRSS/T_AAFVU>-AUFPL = 1.
</MRSS/T_AAFVU>-APLZL = 1.
</MRSS/T_AAFVU>-SLWID = 1.
</MRSS/T_AAFVU>-USR00 = 1.

ENDLOOP.

LOOP AT IT_/MRSS/T_AAFVU INTO WA_/MRSS/T_AAFVU.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_AAFVU-USR01, sy-vline,
  WA_/MRSS/T_AAFVU-USR02, sy-vline,
  WA_/MRSS/T_AAFVU-USR03, sy-vline,
  WA_/MRSS/T_AAFVU-USR04, sy-vline,
  WA_/MRSS/T_AAFVU-USE04, sy-vline,
  WA_/MRSS/T_AAFVU-USR05, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_AAFVU 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_/MRSS/T_AAFVU 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_/MRSS/T_AAFVU INTO WA_/MRSS/T_AAFVU.


*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 CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-USE05.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit OPROB, internal->external for field /MRSS/ORDER_PROB
CALL FUNCTION 'CONVERSION_EXIT_OPROB_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-/MRSS/ORDER_PROB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-/MRSS/ORDER_PROB.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSTLC, internal->external for field /MRSS/REFF_E_BEG
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-/MRSS/REFF_E_BEG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-/MRSS/REFF_E_BEG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field /MRSS/REFF_E_END
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-/MRSS/REFF_E_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-/MRSS/REFF_E_END.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field /MRSS/REFF_L_BEG
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-/MRSS/REFF_L_BEG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-/MRSS/REFF_L_BEG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field /MRSS/REFF_L_END
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-/MRSS/REFF_L_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-/MRSS/REFF_L_END.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field FERC_IND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_AAFVU-FERC_IND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_AAFVU-FERC_IND.
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_/MRSS/T_AAFVU_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
SLWID TYPE STRING,
USR00 TYPE STRING,
USR01 TYPE STRING,
USR02 TYPE STRING,
USR03 TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
USR06 TYPE STRING,
USE06 TYPE STRING,
USR07 TYPE STRING,
USE07 TYPE STRING,
USR08 TYPE STRING,
USR09 TYPE STRING,
USR10 TYPE STRING,
USR11 TYPE STRING,
VNAME TYPE STRING,
RECID TYPE STRING,
ETYPE TYPE STRING,
JV_OTYPE TYPE STRING,
JV_JIBCL TYPE STRING,
JV_JIBSA TYPE STRING,
JV_OCO TYPE STRING,
DUMMY_CI_AFVU TYPE STRING,
SPARAMETER1 TYPE STRING,
SPARAMETER2 TYPE STRING,
SPARAMETER3 TYPE STRING,
/MRSS/ID_PROFILE TYPE STRING,
/MRSS/PROF_KEY TYPE STRING,
/MRSS/PROF_GUID TYPE STRING,
/MRSS/ACT_TYPE TYPE STRING,
/MRSS/ORDER_PROB TYPE STRING,
/MRSS/INIT_DONE TYPE STRING,
/MRSS/DATACHANGE TYPE STRING,
/MRSS/DEM_COUNT TYPE STRING,
/MRSS/SUPERV_CNT TYPE STRING,
/MRSS/RULE_ID TYPE STRING,
/MRSS/SALES_ORG TYPE STRING,
/MRSS/REFF_RCNT TYPE STRING,
/MRSS/REFF_E_BEG TYPE STRING,
/MRSS/REFF_E_END TYPE STRING,
/MRSS/REFF_L_BEG TYPE STRING,
/MRSS/REFF_L_END TYPE STRING,
/MRSS/RELEVANT TYPE STRING,
/MRSS/TEAM_PLAN TYPE STRING,
/MRSS/SINGL_RES TYPE STRING,
/MRSS/TO_BEGDAT TYPE STRING,
/MRSS/TO_BEGTIM TYPE STRING,
/MRSS/TO_ENDDAT TYPE STRING,
/MRSS/TO_ENDTIM TYPE STRING,
/MRSS/TO_DURAT TYPE STRING,
/MRSS/TO_DUNIT TYPE STRING,
/MRSS/TO_DISTAN TYPE STRING,
/MRSS/TO_MANUAL TYPE STRING,
/MRSS/FR_BEGDAT TYPE STRING,
/MRSS/FR_BEGTIM TYPE STRING,
/MRSS/FR_ENDDAT TYPE STRING,
/MRSS/FR_ENDTIM TYPE STRING,
/MRSS/FR_DURAT TYPE STRING,
/MRSS/FR_DUNIT TYPE STRING,
/MRSS/FR_DISTAN TYPE STRING,
/MRSS/FR_MANUAL TYPE STRING,
ILART_OP TYPE STRING,
FERC_IND TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_AAFVU_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_/MRSS/T_AAFVU_STR-MANDT sy-vline 
WA_/MRSS/T_AAFVU_STR-AUFPL sy-vline 
WA_/MRSS/T_AAFVU_STR-APLZL sy-vline 
WA_/MRSS/T_AAFVU_STR-SLWID sy-vline 
WA_/MRSS/T_AAFVU_STR-USR00 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR01 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR02 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR03 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR04 sy-vline 
WA_/MRSS/T_AAFVU_STR-USE04 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR05 sy-vline 
WA_/MRSS/T_AAFVU_STR-USE05 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR06 sy-vline 
WA_/MRSS/T_AAFVU_STR-USE06 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR07 sy-vline 
WA_/MRSS/T_AAFVU_STR-USE07 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR08 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR09 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR10 sy-vline 
WA_/MRSS/T_AAFVU_STR-USR11 sy-vline 
WA_/MRSS/T_AAFVU_STR-VNAME sy-vline 
WA_/MRSS/T_AAFVU_STR-RECID sy-vline 
WA_/MRSS/T_AAFVU_STR-ETYPE sy-vline 
WA_/MRSS/T_AAFVU_STR-JV_OTYPE sy-vline 
WA_/MRSS/T_AAFVU_STR-JV_JIBCL sy-vline 
WA_/MRSS/T_AAFVU_STR-JV_JIBSA sy-vline 
WA_/MRSS/T_AAFVU_STR-JV_OCO sy-vline 
WA_/MRSS/T_AAFVU_STR-DUMMY_CI_AFVU sy-vline 
WA_/MRSS/T_AAFVU_STR-SPARAMETER1 sy-vline 
WA_/MRSS/T_AAFVU_STR-SPARAMETER2 sy-vline 
WA_/MRSS/T_AAFVU_STR-SPARAMETER3 sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/ID_PROFILE sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/PROF_KEY sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/PROF_GUID sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/ACT_TYPE sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/ORDER_PROB sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/INIT_DONE sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/DATACHANGE sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/DEM_COUNT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/SUPERV_CNT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/RULE_ID sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/SALES_ORG sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/REFF_RCNT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/REFF_E_BEG sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/REFF_E_END sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/REFF_L_BEG sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/REFF_L_END sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/RELEVANT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TEAM_PLAN sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/SINGL_RES sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_BEGDAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_BEGTIM sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_ENDDAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_ENDTIM sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_DURAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_DUNIT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_DISTAN sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/TO_MANUAL sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_BEGDAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_BEGTIM sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_ENDDAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_ENDTIM sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_DURAT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_DUNIT sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_DISTAN sy-vline 
WA_/MRSS/T_AAFVU_STR-/MRSS/FR_MANUAL sy-vline 
WA_/MRSS/T_AAFVU_STR-ILART_OP sy-vline 
WA_/MRSS/T_AAFVU_STR-FERC_IND sy-vline 
WA_/MRSS/T_AAFVU_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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