ABAP Select data from SAP table FMAVCT 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 FMAVCT 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 FMAVCT. 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 FMAVCT 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_FMAVCT TYPE STANDARD TABLE OF FMAVCT,
      WA_FMAVCT TYPE FMAVCT,
      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: <FMAVCT> TYPE FMAVCT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMAVCT
*  INTO TABLE @DATA(IT_FMAVCT2).
*--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_FMAVCT INDEX 1 INTO DATA(WA_FMAVCT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMAVCT-ROBJNR, sy-vline,
  WA_FMAVCT-COBJNR, sy-vline,
  WA_FMAVCT-SOBJNR, sy-vline,
  WA_FMAVCT-RTCUR, sy-vline,
  WA_FMAVCT-DRCRK, sy-vline,
  WA_FMAVCT-RPMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMAVCT 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_FMAVCT 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_FMAVCT INTO WA_FMAVCT.


*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_FMAVCT-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCT-RLDNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field RGRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMAVCT-RGRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCT-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_FMAVCT-CEFFYEAR_9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCT-CEFFYEAR_9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMAVCT-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMAVCT-LOGSYS.
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_FMAVCT_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
ROBJNR TYPE STRING,
COBJNR TYPE STRING,
SOBJNR TYPE STRING,
RTCUR TYPE STRING,
DRCRK TYPE STRING,
RPMAX 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,
TSLVT TYPE STRING,
TSL01 TYPE STRING,
TSL02 TYPE STRING,
TSL03 TYPE STRING,
TSL04 TYPE STRING,
TSL05 TYPE STRING,
TSL06 TYPE STRING,
TSL07 TYPE STRING,
TSL08 TYPE STRING,
TSL09 TYPE STRING,
TSL10 TYPE STRING,
TSL11 TYPE STRING,
TSL12 TYPE STRING,
TSL13 TYPE STRING,
TSL14 TYPE STRING,
TSL15 TYPE STRING,
TSL16 TYPE STRING,
HSLVT TYPE STRING,
HSL01 TYPE STRING,
HSL02 TYPE STRING,
HSL03 TYPE STRING,
HSL04 TYPE STRING,
HSL05 TYPE STRING,
HSL06 TYPE STRING,
HSL07 TYPE STRING,
HSL08 TYPE STRING,
HSL09 TYPE STRING,
HSL10 TYPE STRING,
HSL11 TYPE STRING,
HSL12 TYPE STRING,
HSL13 TYPE STRING,
HSL14 TYPE STRING,
HSL15 TYPE STRING,
HSL16 TYPE STRING,
KSLVT TYPE STRING,
KSL01 TYPE STRING,
KSL02 TYPE STRING,
KSL03 TYPE STRING,
KSL04 TYPE STRING,
KSL05 TYPE STRING,
KSL06 TYPE STRING,
KSL07 TYPE STRING,
KSL08 TYPE STRING,
KSL09 TYPE STRING,
KSL10 TYPE STRING,
KSL11 TYPE STRING,
KSL12 TYPE STRING,
KSL13 TYPE STRING,
KSL14 TYPE STRING,
KSL15 TYPE STRING,
KSL16 TYPE STRING,
CSPRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMAVCT_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_FMAVCT_STR-RCLNT sy-vline 
WA_FMAVCT_STR-RLDNR sy-vline 
WA_FMAVCT_STR-RRCTY sy-vline 
WA_FMAVCT_STR-RVERS sy-vline 
WA_FMAVCT_STR-RYEAR sy-vline 
WA_FMAVCT_STR-ROBJNR sy-vline 
WA_FMAVCT_STR-COBJNR sy-vline 
WA_FMAVCT_STR-SOBJNR sy-vline 
WA_FMAVCT_STR-RTCUR sy-vline 
WA_FMAVCT_STR-DRCRK sy-vline 
WA_FMAVCT_STR-RPMAX sy-vline 
WA_FMAVCT_STR-RFIKRS sy-vline 
WA_FMAVCT_STR-RFUND sy-vline 
WA_FMAVCT_STR-RFUNDSCTR sy-vline 
WA_FMAVCT_STR-RCMMTITEM sy-vline 
WA_FMAVCT_STR-RFUNCAREA sy-vline 
WA_FMAVCT_STR-RUSERDIM sy-vline 
WA_FMAVCT_STR-RGRANT_NBR sy-vline 
WA_FMAVCT_STR-RMEASURE sy-vline 
WA_FMAVCT_STR-RCVRGRP_9 sy-vline 
WA_FMAVCT_STR-BUDGET_PD_9 sy-vline 
WA_FMAVCT_STR-CEFFYEAR_9 sy-vline 
WA_FMAVCT_STR-WFSTATE_9 sy-vline 
WA_FMAVCT_STR-ALLOCTYPE_9 sy-vline 
WA_FMAVCT_STR-LOGSYS sy-vline 
WA_FMAVCT_STR-TSLVT sy-vline 
WA_FMAVCT_STR-TSL01 sy-vline 
WA_FMAVCT_STR-TSL02 sy-vline 
WA_FMAVCT_STR-TSL03 sy-vline 
WA_FMAVCT_STR-TSL04 sy-vline 
WA_FMAVCT_STR-TSL05 sy-vline 
WA_FMAVCT_STR-TSL06 sy-vline 
WA_FMAVCT_STR-TSL07 sy-vline 
WA_FMAVCT_STR-TSL08 sy-vline 
WA_FMAVCT_STR-TSL09 sy-vline 
WA_FMAVCT_STR-TSL10 sy-vline 
WA_FMAVCT_STR-TSL11 sy-vline 
WA_FMAVCT_STR-TSL12 sy-vline 
WA_FMAVCT_STR-TSL13 sy-vline 
WA_FMAVCT_STR-TSL14 sy-vline 
WA_FMAVCT_STR-TSL15 sy-vline 
WA_FMAVCT_STR-TSL16 sy-vline 
WA_FMAVCT_STR-HSLVT sy-vline 
WA_FMAVCT_STR-HSL01 sy-vline 
WA_FMAVCT_STR-HSL02 sy-vline 
WA_FMAVCT_STR-HSL03 sy-vline 
WA_FMAVCT_STR-HSL04 sy-vline 
WA_FMAVCT_STR-HSL05 sy-vline 
WA_FMAVCT_STR-HSL06 sy-vline 
WA_FMAVCT_STR-HSL07 sy-vline 
WA_FMAVCT_STR-HSL08 sy-vline 
WA_FMAVCT_STR-HSL09 sy-vline 
WA_FMAVCT_STR-HSL10 sy-vline 
WA_FMAVCT_STR-HSL11 sy-vline 
WA_FMAVCT_STR-HSL12 sy-vline 
WA_FMAVCT_STR-HSL13 sy-vline 
WA_FMAVCT_STR-HSL14 sy-vline 
WA_FMAVCT_STR-HSL15 sy-vline 
WA_FMAVCT_STR-HSL16 sy-vline 
WA_FMAVCT_STR-KSLVT sy-vline 
WA_FMAVCT_STR-KSL01 sy-vline 
WA_FMAVCT_STR-KSL02 sy-vline 
WA_FMAVCT_STR-KSL03 sy-vline 
WA_FMAVCT_STR-KSL04 sy-vline 
WA_FMAVCT_STR-KSL05 sy-vline 
WA_FMAVCT_STR-KSL06 sy-vline 
WA_FMAVCT_STR-KSL07 sy-vline 
WA_FMAVCT_STR-KSL08 sy-vline 
WA_FMAVCT_STR-KSL09 sy-vline 
WA_FMAVCT_STR-KSL10 sy-vline 
WA_FMAVCT_STR-KSL11 sy-vline 
WA_FMAVCT_STR-KSL12 sy-vline 
WA_FMAVCT_STR-KSL13 sy-vline 
WA_FMAVCT_STR-KSL14 sy-vline 
WA_FMAVCT_STR-KSL15 sy-vline 
WA_FMAVCT_STR-KSL16 sy-vline 
WA_FMAVCT_STR-CSPRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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