ABAP Select data from SAP table PRJ_S_AFVG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRJ_S_AFVG
*  INTO TABLE @DATA(IT_PRJ_S_AFVG2).
*--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_PRJ_S_AFVG INDEX 1 INTO DATA(WA_PRJ_S_AFVG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRJ_S_AFVG>-AUFPL = 1.
<PRJ_S_AFVG>-APLZL = 1.
<PRJ_S_AFVG>-VORNR = 1.
<PRJ_S_AFVG>-ARBID = 1.
<PRJ_S_AFVG>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRJ_S_AFVG-LTXA1, sy-vline,
  WA_PRJ_S_AFVG-TXTSP, sy-vline,
  WA_PRJ_S_AFVG-SUMNR, sy-vline,
  WA_PRJ_S_AFVG-OBJNR, sy-vline,
  WA_PRJ_S_AFVG-BEDID, sy-vline,
  WA_PRJ_S_AFVG-BEDZL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRJ_S_AFVG 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_PRJ_S_AFVG 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_PRJ_S_AFVG INTO WA_PRJ_S_AFVG.


*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 NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PRJ_S_AFVG-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRJ_S_AFVG-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PRJ_S_AFVG-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRJ_S_AFVG-TXTSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PRJ_S_AFVG-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRJ_S_AFVG-PROJN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field BEAZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRJ_S_AFVG-BEAZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRJ_S_AFVG-BEAZE.
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_PRJ_S_AFVG_STR, 
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
ARBID TYPE STRING,
WERKS TYPE STRING,
LTXA1 TYPE STRING,
TXTSP TYPE STRING,
SUMNR TYPE STRING,
OBJNR TYPE STRING,
BEDID TYPE STRING,
BEDZL TYPE STRING,
PROJN TYPE STRING,
LOEKZ TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
FSEDD TYPE STRING,
FSEDZ TYPE STRING,
SSAVD TYPE STRING,
SSAVZ TYPE STRING,
SSEDD TYPE STRING,
SSEDZ TYPE STRING,
ISDD TYPE STRING,
ISDZ TYPE STRING,
IEDD TYPE STRING,
IEDZ TYPE STRING,
BEARZ TYPE STRING,
BEAZE TYPE STRING,
VBKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRJ_S_AFVG_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_PRJ_S_AFVG_STR-AUFPL sy-vline 
WA_PRJ_S_AFVG_STR-APLZL sy-vline 
WA_PRJ_S_AFVG_STR-VORNR sy-vline 
WA_PRJ_S_AFVG_STR-ARBID sy-vline 
WA_PRJ_S_AFVG_STR-WERKS sy-vline 
WA_PRJ_S_AFVG_STR-LTXA1 sy-vline 
WA_PRJ_S_AFVG_STR-TXTSP sy-vline 
WA_PRJ_S_AFVG_STR-SUMNR sy-vline 
WA_PRJ_S_AFVG_STR-OBJNR sy-vline 
WA_PRJ_S_AFVG_STR-BEDID sy-vline 
WA_PRJ_S_AFVG_STR-BEDZL sy-vline 
WA_PRJ_S_AFVG_STR-PROJN sy-vline 
WA_PRJ_S_AFVG_STR-LOEKZ sy-vline 
WA_PRJ_S_AFVG_STR-DAUNO sy-vline 
WA_PRJ_S_AFVG_STR-DAUNE sy-vline 
WA_PRJ_S_AFVG_STR-FSAVD sy-vline 
WA_PRJ_S_AFVG_STR-FSAVZ sy-vline 
WA_PRJ_S_AFVG_STR-FSEDD sy-vline 
WA_PRJ_S_AFVG_STR-FSEDZ sy-vline 
WA_PRJ_S_AFVG_STR-SSAVD sy-vline 
WA_PRJ_S_AFVG_STR-SSAVZ sy-vline 
WA_PRJ_S_AFVG_STR-SSEDD sy-vline 
WA_PRJ_S_AFVG_STR-SSEDZ sy-vline 
WA_PRJ_S_AFVG_STR-ISDD sy-vline 
WA_PRJ_S_AFVG_STR-ISDZ sy-vline 
WA_PRJ_S_AFVG_STR-IEDD sy-vline 
WA_PRJ_S_AFVG_STR-IEDZ sy-vline 
WA_PRJ_S_AFVG_STR-BEARZ sy-vline 
WA_PRJ_S_AFVG_STR-BEAZE sy-vline 
WA_PRJ_S_AFVG_STR-VBKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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