ABAP Select data from SAP table FMAVCA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMAVCA 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 FMAVCA. 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 FMAVCA 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_FMAVCA TYPE STANDARD TABLE OF FMAVCA,
      WA_FMAVCA TYPE FMAVCA,
      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: <FMAVCA> TYPE FMAVCA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMAVCA
*  INTO TABLE @DATA(IT_FMAVCA2).
*--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_FMAVCA INDEX 1 INTO DATA(WA_FMAVCA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMAVCA>-RCLNT = 1.
<FMAVCA>-GL_SIRID = 1.
<FMAVCA>-RLDNR = 1.
<FMAVCA>-RRCTY = 1.
<FMAVCA>-RVERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMAVCA-RYEAR, sy-vline,
  WA_FMAVCA-RTCUR, sy-vline,
  WA_FMAVCA-DRCRK, sy-vline,
  WA_FMAVCA-POPER, sy-vline,
  WA_FMAVCA-DOCCT, sy-vline,
  WA_FMAVCA-DOCNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMAVCA 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_FMAVCA 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_FMAVCA INTO WA_FMAVCA.


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

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

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

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

*Conversion exit FMCIL, internal->external for field RCMMTITEM
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMAVCA-RCMMTITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCA-RCMMTITEM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field CEFFYEAR_9
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMAVCA-CEFFYEAR_9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCA-CEFFYEAR_9.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMAVCA-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCA-REFRYEAR.
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_FMAVCA_STR, 
RCLNT TYPE STRING,
GL_SIRID TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
RFIKRS TYPE STRING,
RFUND TYPE STRING,
RFUNDSCTR TYPE STRING,
RCMMTITEM TYPE STRING,
RFUNCAREA TYPE STRING,
RUSERDIM TYPE STRING,
RGRANT_NBR TYPE STRING,
RMEASURE TYPE STRING,
RCVRGRP_9 TYPE STRING,
BUDGET_PD_9 TYPE STRING,
CEFFYEAR_9 TYPE STRING,
WFSTATE_9 TYPE STRING,
ALLOCTYPE_9 TYPE STRING,
LOGSYS TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
SGTXT TYPE STRING,
DOCTY TYPE STRING,
ACTIV TYPE STRING,
BUDAT TYPE STRING,
WSDAT TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMAVCA_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_FMAVCA_STR-RCLNT sy-vline 
WA_FMAVCA_STR-GL_SIRID sy-vline 
WA_FMAVCA_STR-RLDNR sy-vline 
WA_FMAVCA_STR-RRCTY sy-vline 
WA_FMAVCA_STR-RVERS sy-vline 
WA_FMAVCA_STR-RYEAR sy-vline 
WA_FMAVCA_STR-RTCUR sy-vline 
WA_FMAVCA_STR-DRCRK sy-vline 
WA_FMAVCA_STR-POPER sy-vline 
WA_FMAVCA_STR-DOCCT sy-vline 
WA_FMAVCA_STR-DOCNR sy-vline 
WA_FMAVCA_STR-DOCLN sy-vline 
WA_FMAVCA_STR-RFIKRS sy-vline 
WA_FMAVCA_STR-RFUND sy-vline 
WA_FMAVCA_STR-RFUNDSCTR sy-vline 
WA_FMAVCA_STR-RCMMTITEM sy-vline 
WA_FMAVCA_STR-RFUNCAREA sy-vline 
WA_FMAVCA_STR-RUSERDIM sy-vline 
WA_FMAVCA_STR-RGRANT_NBR sy-vline 
WA_FMAVCA_STR-RMEASURE sy-vline 
WA_FMAVCA_STR-RCVRGRP_9 sy-vline 
WA_FMAVCA_STR-BUDGET_PD_9 sy-vline 
WA_FMAVCA_STR-CEFFYEAR_9 sy-vline 
WA_FMAVCA_STR-WFSTATE_9 sy-vline 
WA_FMAVCA_STR-ALLOCTYPE_9 sy-vline 
WA_FMAVCA_STR-LOGSYS sy-vline 
WA_FMAVCA_STR-TSL sy-vline 
WA_FMAVCA_STR-HSL sy-vline 
WA_FMAVCA_STR-KSL sy-vline 
WA_FMAVCA_STR-SGTXT sy-vline 
WA_FMAVCA_STR-DOCTY sy-vline 
WA_FMAVCA_STR-ACTIV sy-vline 
WA_FMAVCA_STR-BUDAT sy-vline 
WA_FMAVCA_STR-WSDAT sy-vline 
WA_FMAVCA_STR-REFDOCNR sy-vline 
WA_FMAVCA_STR-REFRYEAR sy-vline 
WA_FMAVCA_STR-REFDOCLN sy-vline 
WA_FMAVCA_STR-REFDOCCT sy-vline 
WA_FMAVCA_STR-REFACTIV sy-vline 
WA_FMAVCA_STR-CPUDT sy-vline 
WA_FMAVCA_STR-CPUTM sy-vline 
WA_FMAVCA_STR-USNAM sy-vline 
WA_FMAVCA_STR-AWTYP sy-vline 
WA_FMAVCA_STR-AWORG sy-vline      INTO ld_text SEPARATED BY SPACE.

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