ABAP Select data from SAP table PC22L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC22L 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 PC22L. 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 PC22L 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_PC22L TYPE STANDARD TABLE OF PC22L,
      WA_PC22L TYPE PC22L,
      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: <PC22L> TYPE PC22L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC22L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC22L
  INTO TABLE IT_PC22L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC22L
*  INTO TABLE @DATA(IT_PC22L2).
*--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_PC22L INDEX 1 INTO DATA(WA_PC22L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC22L ASSIGNING <PC22L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC22L>-CNTR2 = 1.
<PC22L>-BEGDA = 1.
<PC22L>-ENDDA = 1.
<PC22L>-TTKF1 = 1.
<PC22L>-TTKF2 = 1.

ENDLOOP.

LOOP AT IT_PC22L INTO WA_PC22L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC22L-LZZRM, sy-vline,
  WA_PC22L-STAGE, sy-vline,
  WA_PC22L-TTFB0, sy-vline,
  WA_PC22L-TTFB1, sy-vline,
  WA_PC22L-TTFB2, sy-vline,
  WA_PC22L-TTFB3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC22L 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_PC22L 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_PC22L INTO WA_PC22L.


*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_PC22L_STR, 
CNTR2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TTKF1 TYPE STRING,
TTKF2 TYPE STRING,
LZZRM TYPE STRING,
STAGE TYPE STRING,
TTFB0 TYPE STRING,
TTFB1 TYPE STRING,
TTFB2 TYPE STRING,
TTFB3 TYPE STRING,
TTFB4 TYPE STRING,
TTFC1 TYPE STRING,
TTFC2 TYPE STRING,
TTFC3 TYPE STRING,
TTFC4 TYPE STRING,
TTFC5 TYPE STRING,
TTFD1 TYPE STRING,
TTFD2 TYPE STRING,
STFRG TYPE STRING,
STBFG TYPE STRING,
STRSO TYPE STRING,
STRS2 TYPE STRING,
USCHR TYPE STRING,
DOPRA TYPE STRING,
TKF2N TYPE STRING,
TKF3N TYPE STRING,
TKF2D TYPE STRING,
TKF3D TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC22L_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_PC22L_STR-CNTR2 sy-vline 
WA_PC22L_STR-BEGDA sy-vline 
WA_PC22L_STR-ENDDA sy-vline 
WA_PC22L_STR-TTKF1 sy-vline 
WA_PC22L_STR-TTKF2 sy-vline 
WA_PC22L_STR-LZZRM sy-vline 
WA_PC22L_STR-STAGE sy-vline 
WA_PC22L_STR-TTFB0 sy-vline 
WA_PC22L_STR-TTFB1 sy-vline 
WA_PC22L_STR-TTFB2 sy-vline 
WA_PC22L_STR-TTFB3 sy-vline 
WA_PC22L_STR-TTFB4 sy-vline 
WA_PC22L_STR-TTFC1 sy-vline 
WA_PC22L_STR-TTFC2 sy-vline 
WA_PC22L_STR-TTFC3 sy-vline 
WA_PC22L_STR-TTFC4 sy-vline 
WA_PC22L_STR-TTFC5 sy-vline 
WA_PC22L_STR-TTFD1 sy-vline 
WA_PC22L_STR-TTFD2 sy-vline 
WA_PC22L_STR-STFRG sy-vline 
WA_PC22L_STR-STBFG sy-vline 
WA_PC22L_STR-STRSO sy-vline 
WA_PC22L_STR-STRS2 sy-vline 
WA_PC22L_STR-USCHR sy-vline 
WA_PC22L_STR-DOPRA sy-vline 
WA_PC22L_STR-TKF2N sy-vline 
WA_PC22L_STR-TKF3N sy-vline 
WA_PC22L_STR-TKF2D sy-vline 
WA_PC22L_STR-TKF3D sy-vline      INTO ld_text SEPARATED BY SPACE.

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