ABAP Select data from SAP table P05T_A_EXT_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P05T_A_EXT_ALV 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 P05T_A_EXT_ALV. 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 P05T_A_EXT_ALV 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_P05T_A_EXT_ALV TYPE STANDARD TABLE OF P05T_A_EXT_ALV,
      WA_P05T_A_EXT_ALV TYPE P05T_A_EXT_ALV,
      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: <P05T_A_EXT_ALV> TYPE P05T_A_EXT_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P05T_A_EXT_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P05T_A_EXT_ALV
  INTO TABLE IT_P05T_A_EXT_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P05T_A_EXT_ALV
*  INTO TABLE @DATA(IT_P05T_A_EXT_ALV2).
*--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_P05T_A_EXT_ALV INDEX 1 INTO DATA(WA_P05T_A_EXT_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P05T_A_EXT_ALV ASSIGNING <P05T_A_EXT_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P05T_A_EXT_ALV>-MANDT = 1.
<P05T_A_EXT_ALV>-JUPER = 1.
<P05T_A_EXT_ALV>-LAIPJ = 1.
<P05T_A_EXT_ALV>-LAIPM = 1.
<P05T_A_EXT_ALV>-LAFPJ = 1.

ENDLOOP.

LOOP AT IT_P05T_A_EXT_ALV INTO WA_P05T_A_EXT_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P05T_A_EXT_ALV-LAFPM, sy-vline,
  WA_P05T_A_EXT_ALV-KENT, sy-vline,
  WA_P05T_A_EXT_ALV-BETRG, sy-vline,
  WA_P05T_A_EXT_ALV-UNAME, sy-vline,
  WA_P05T_A_EXT_ALV-GDATE, sy-vline,
  WA_P05T_A_EXT_ALV-GTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P05T_A_EXT_ALV 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_P05T_A_EXT_ALV 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_P05T_A_EXT_ALV INTO WA_P05T_A_EXT_ALV.


*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 GJAHR, internal->external for field LAIPJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P05T_A_EXT_ALV-LAIPJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P05T_A_EXT_ALV-LAIPJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LAFPJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P05T_A_EXT_ALV-LAFPJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P05T_A_EXT_ALV-LAFPJ.
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_P05T_A_EXT_ALV_STR, 
MANDT TYPE STRING,
JUPER TYPE STRING,
LAIPJ TYPE STRING,
LAIPM TYPE STRING,
LAFPJ TYPE STRING,
LAFPM TYPE STRING,
KENT TYPE STRING,
BETRG TYPE STRING,
UNAME TYPE STRING,
GDATE TYPE STRING,
GTIME TYPE STRING,
LTXT TYPE STRING,
RPOMS TYPE STRING,
EMPL TYPE STRING,
ERTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P05T_A_EXT_ALV_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_P05T_A_EXT_ALV_STR-MANDT sy-vline 
WA_P05T_A_EXT_ALV_STR-JUPER sy-vline 
WA_P05T_A_EXT_ALV_STR-LAIPJ sy-vline 
WA_P05T_A_EXT_ALV_STR-LAIPM sy-vline 
WA_P05T_A_EXT_ALV_STR-LAFPJ sy-vline 
WA_P05T_A_EXT_ALV_STR-LAFPM sy-vline 
WA_P05T_A_EXT_ALV_STR-KENT sy-vline 
WA_P05T_A_EXT_ALV_STR-BETRG sy-vline 
WA_P05T_A_EXT_ALV_STR-UNAME sy-vline 
WA_P05T_A_EXT_ALV_STR-GDATE sy-vline 
WA_P05T_A_EXT_ALV_STR-GTIME sy-vline 
WA_P05T_A_EXT_ALV_STR-LTXT sy-vline 
WA_P05T_A_EXT_ALV_STR-RPOMS sy-vline 
WA_P05T_A_EXT_ALV_STR-EMPL sy-vline 
WA_P05T_A_EXT_ALV_STR-ERTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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