ABAP Select data from SAP table P22_RES_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P22_RES_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 P22_RES_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 P22_RES_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_P22_RES_ALV TYPE STANDARD TABLE OF P22_RES_ALV,
      WA_P22_RES_ALV TYPE P22_RES_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: <P22_RES_ALV> TYPE P22_RES_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P22_RES_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P22_RES_ALV
  INTO TABLE IT_P22_RES_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P22_RES_ALV
*  INTO TABLE @DATA(IT_P22_RES_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_P22_RES_ALV INDEX 1 INTO DATA(WA_P22_RES_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P22_RES_ALV ASSIGNING <P22_RES_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P22_RES_ALV>-PERNR = 1.
<P22_RES_ALV>-CHANGEDAY = 1.
<P22_RES_ALV>-RTXTX = 1.
<P22_RES_ALV>-RCLTX = 1.
<P22_RES_ALV>-ORGTX = 1.

ENDLOOP.

LOOP AT IT_P22_RES_ALV INTO WA_P22_RES_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P22_RES_ALV-NAME2, sy-vline,
  WA_P22_RES_ALV-KANA, sy-vline,
  WA_P22_RES_ALV-NAME, sy-vline,
  WA_P22_RES_ALV-JGNNM, sy-vline,
  WA_P22_RES_ALV-JGNPS, sy-vline,
  WA_P22_RES_ALV-JGNPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P22_RES_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_P22_RES_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_P22_RES_ALV INTO WA_P22_RES_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P22_RES_ALV_STR, 
PERNR TYPE STRING,
CHANGEDAY TYPE STRING,
RTXTX TYPE STRING,
RCLTX TYPE STRING,
ORGTX TYPE STRING,
NAME2 TYPE STRING,
KANA TYPE STRING,
NAME TYPE STRING,
JGNNM TYPE STRING,
JGNPS TYPE STRING,
JGNPR TYPE STRING,
PSTLZ TYPE STRING,
ADRES TYPE STRING,
YEAR1 TYPE STRING,
MSG TYPE STRING,
RCTVC1 TYPE STRING,
CTXKJ1 TYPE STRING,
TASNO1 TYPE STRING,
ADRSO1 TYPE STRING,
ADRSN1 TYPE STRING,
TAXAM1 TYPE STRING,
TXSTA1 TYPE STRING,
TXFIN1 TYPE STRING,
TXCOLL1 TYPE STRING,
TXUNCO1 TYPE STRING,
PAYSCH1 TYPE STRING,
TAXSCH1 TYPE STRING,
TAXTOT1 TYPE STRING,
TOTAXA1 TYPE STRING,
TOSOCI1 TYPE STRING,
TORETI1 TYPE STRING,
CONTIN1 TYPE STRING,
YEAR2 TYPE STRING,
RCTVC2 TYPE STRING,
CTXKJ2 TYPE STRING,
CLCNR1 TYPE STRING,
ADRSN2 TYPE STRING,
ADRSO2 TYPE STRING,
TAXAM2 TYPE STRING,
TXCOLL2 TYPE STRING,
TXUNCO2 TYPE STRING,
PAYSCH2 TYPE STRING,
TAXSCH2 TYPE STRING,
TAXTOT2 TYPE STRING,
TOTAXA2 TYPE STRING,
TOSOCI2 TYPE STRING,
TORETI2 TYPE STRING,
CONTIN2 TYPE STRING,
CLCNR2 TYPE STRING,
TASNO2 TYPE STRING,
RTXMF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P22_RES_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_P22_RES_ALV_STR-PERNR sy-vline 
WA_P22_RES_ALV_STR-CHANGEDAY sy-vline 
WA_P22_RES_ALV_STR-RTXTX sy-vline 
WA_P22_RES_ALV_STR-RCLTX sy-vline 
WA_P22_RES_ALV_STR-ORGTX sy-vline 
WA_P22_RES_ALV_STR-NAME2 sy-vline 
WA_P22_RES_ALV_STR-KANA sy-vline 
WA_P22_RES_ALV_STR-NAME sy-vline 
WA_P22_RES_ALV_STR-JGNNM sy-vline 
WA_P22_RES_ALV_STR-JGNPS sy-vline 
WA_P22_RES_ALV_STR-JGNPR sy-vline 
WA_P22_RES_ALV_STR-PSTLZ sy-vline 
WA_P22_RES_ALV_STR-ADRES sy-vline 
WA_P22_RES_ALV_STR-YEAR1 sy-vline 
WA_P22_RES_ALV_STR-MSG sy-vline 
WA_P22_RES_ALV_STR-RCTVC1 sy-vline 
WA_P22_RES_ALV_STR-CTXKJ1 sy-vline 
WA_P22_RES_ALV_STR-TASNO1 sy-vline 
WA_P22_RES_ALV_STR-ADRSO1 sy-vline 
WA_P22_RES_ALV_STR-ADRSN1 sy-vline 
WA_P22_RES_ALV_STR-TAXAM1 sy-vline 
WA_P22_RES_ALV_STR-TXSTA1 sy-vline 
WA_P22_RES_ALV_STR-TXFIN1 sy-vline 
WA_P22_RES_ALV_STR-TXCOLL1 sy-vline 
WA_P22_RES_ALV_STR-TXUNCO1 sy-vline 
WA_P22_RES_ALV_STR-PAYSCH1 sy-vline 
WA_P22_RES_ALV_STR-TAXSCH1 sy-vline 
WA_P22_RES_ALV_STR-TAXTOT1 sy-vline 
WA_P22_RES_ALV_STR-TOTAXA1 sy-vline 
WA_P22_RES_ALV_STR-TOSOCI1 sy-vline 
WA_P22_RES_ALV_STR-TORETI1 sy-vline 
WA_P22_RES_ALV_STR-CONTIN1 sy-vline 
WA_P22_RES_ALV_STR-YEAR2 sy-vline 
WA_P22_RES_ALV_STR-RCTVC2 sy-vline 
WA_P22_RES_ALV_STR-CTXKJ2 sy-vline 
WA_P22_RES_ALV_STR-CLCNR1 sy-vline 
WA_P22_RES_ALV_STR-ADRSN2 sy-vline 
WA_P22_RES_ALV_STR-ADRSO2 sy-vline 
WA_P22_RES_ALV_STR-TAXAM2 sy-vline 
WA_P22_RES_ALV_STR-TXCOLL2 sy-vline 
WA_P22_RES_ALV_STR-TXUNCO2 sy-vline 
WA_P22_RES_ALV_STR-PAYSCH2 sy-vline 
WA_P22_RES_ALV_STR-TAXSCH2 sy-vline 
WA_P22_RES_ALV_STR-TAXTOT2 sy-vline 
WA_P22_RES_ALV_STR-TOTAXA2 sy-vline 
WA_P22_RES_ALV_STR-TOSOCI2 sy-vline 
WA_P22_RES_ALV_STR-TORETI2 sy-vline 
WA_P22_RES_ALV_STR-CONTIN2 sy-vline 
WA_P22_RES_ALV_STR-CLCNR2 sy-vline 
WA_P22_RES_ALV_STR-TASNO2 sy-vline 
WA_P22_RES_ALV_STR-RTXMF sy-vline      INTO ld_text SEPARATED BY SPACE.

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