ABAP Select data from SAP table PC2CH03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2CH03 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 PC2CH03. 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 PC2CH03 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_PC2CH03 TYPE STANDARD TABLE OF PC2CH03,
      WA_PC2CH03 TYPE PC2CH03,
      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: <PC2CH03> TYPE PC2CH03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2CH03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2CH03
  INTO TABLE IT_PC2CH03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2CH03
*  INTO TABLE @DATA(IT_PC2CH032).
*--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_PC2CH03 INDEX 1 INTO DATA(WA_PC2CH032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2CH03 ASSIGNING <PC2CH03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2CH03>-APZNR = 1.
<PC2CH03>-PERIOD_END = 1.
<PC2CH03>-CIVILST = 1.
<PC2CH03>-PARTW_SECONDARY = 1.
<PC2CH03>-PARTW_C = 1.

ENDLOOP.

LOOP AT IT_PC2CH03 INTO WA_PC2CH03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2CH03-PARTW_B, sy-vline,
  WA_PC2CH03-PARTW_E, sy-vline,
  WA_PC2CH03-CHILDN, sy-vline,
  WA_PC2CH03-CHUTAX, sy-vline,
  WA_PC2CH03-ACTRATE1, sy-vline,
  WA_PC2CH03-ACTRATE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2CH03 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_PC2CH03 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_PC2CH03 INTO WA_PC2CH03.


*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_PC2CH03_STR, 
APZNR TYPE STRING,
PERIOD_END TYPE STRING,
CIVILST TYPE STRING,
PARTW_SECONDARY TYPE STRING,
PARTW_C TYPE STRING,
PARTW_B TYPE STRING,
PARTW_E TYPE STRING,
CHILDN TYPE STRING,
CHUTAX TYPE STRING,
ACTRATE1 TYPE STRING,
ACTRATE2 TYPE STRING,
ASTAT TYPE STRING,
NATIO TYPE STRING,
NATI2 TYPE STRING,
NATI3 TYPE STRING,
ADDRESS_SUBTY TYPE STRING,
STRAS TYPE STRING,
LOCAT TYPE STRING,
STATE TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
ADDRESS_SUBTY_PARTNER TYPE STRING,
STRAS_PARTNER TYPE STRING,
LOCAT_PARTNER TYPE STRING,
STATE_PARTNER TYPE STRING,
PSTLZ_PARTNER TYPE STRING,
ORT01_PARTNER TYPE STRING,
LAND1_PARTNER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2CH03_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_PC2CH03_STR-APZNR sy-vline 
WA_PC2CH03_STR-PERIOD_END sy-vline 
WA_PC2CH03_STR-CIVILST sy-vline 
WA_PC2CH03_STR-PARTW_SECONDARY sy-vline 
WA_PC2CH03_STR-PARTW_C sy-vline 
WA_PC2CH03_STR-PARTW_B sy-vline 
WA_PC2CH03_STR-PARTW_E sy-vline 
WA_PC2CH03_STR-CHILDN sy-vline 
WA_PC2CH03_STR-CHUTAX sy-vline 
WA_PC2CH03_STR-ACTRATE1 sy-vline 
WA_PC2CH03_STR-ACTRATE2 sy-vline 
WA_PC2CH03_STR-ASTAT sy-vline 
WA_PC2CH03_STR-NATIO sy-vline 
WA_PC2CH03_STR-NATI2 sy-vline 
WA_PC2CH03_STR-NATI3 sy-vline 
WA_PC2CH03_STR-ADDRESS_SUBTY sy-vline 
WA_PC2CH03_STR-STRAS sy-vline 
WA_PC2CH03_STR-LOCAT sy-vline 
WA_PC2CH03_STR-STATE sy-vline 
WA_PC2CH03_STR-PSTLZ sy-vline 
WA_PC2CH03_STR-ORT01 sy-vline 
WA_PC2CH03_STR-LAND1 sy-vline 
WA_PC2CH03_STR-ADDRESS_SUBTY_PARTNER sy-vline 
WA_PC2CH03_STR-STRAS_PARTNER sy-vline 
WA_PC2CH03_STR-LOCAT_PARTNER sy-vline 
WA_PC2CH03_STR-STATE_PARTNER sy-vline 
WA_PC2CH03_STR-PSTLZ_PARTNER sy-vline 
WA_PC2CH03_STR-ORT01_PARTNER sy-vline 
WA_PC2CH03_STR-LAND1_PARTNER sy-vline      INTO ld_text SEPARATED BY SPACE.

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