ABAP Select data from SAP table CPHEADINF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPHEADINF
*  INTO TABLE @DATA(IT_CPHEADINF2).
*--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_CPHEADINF INDEX 1 INTO DATA(WA_CPHEADINF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPHEADINF>-DATUB = 1.
<CPHEADINF>-AENNR_AUS = 1.
<CPHEADINF>-KAP_ARBPL = 1.
<CPHEADINF>-ST_ARBPL = 1.
<CPHEADINF>-STAUFG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPHEADINF-LINE, sy-vline,
  WA_CPHEADINF-AEUZEIT, sy-vline,
  WA_CPHEADINF-QM_IP_TYPE_ALLOWED, sy-vline,
  WA_CPHEADINF-SUBTYPE, sy-vline,
  WA_CPHEADINF-ALTEXT, sy-vline,
  WA_CPHEADINF-REWORK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPHEADINF 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_CPHEADINF 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_CPHEADINF INTO WA_CPHEADINF.


*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 ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPHEADINF-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPHEADINF-AENNR_AUS.
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_CPHEADINF_STR, 
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
KAP_ARBPL TYPE STRING,
ST_ARBPL TYPE STRING,
STAUFG TYPE STRING,
LINE TYPE STRING,
AEUZEIT TYPE STRING,
QM_IP_TYPE_ALLOWED TYPE STRING,
SUBTYPE TYPE STRING,
ALTEXT TYPE STRING,
REWORK TYPE STRING,
FLG_ECM TYPE STRING,
FLG_ECM_PAR TYPE STRING,
RELAXED TYPE STRING,
EXECUTION_IN_ME TYPE STRING,
ERP_INTEGRATION TYPE STRING,
REFERENCE_TEMPLATE_TYPE TYPE STRING,
REFERENCE_TEMPLATE_CATEGORY TYPE STRING,
REFERENCE_TEMPLATE_OWNER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPHEADINF_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_CPHEADINF_STR-DATUB sy-vline 
WA_CPHEADINF_STR-AENNR_AUS sy-vline 
WA_CPHEADINF_STR-KAP_ARBPL sy-vline 
WA_CPHEADINF_STR-ST_ARBPL sy-vline 
WA_CPHEADINF_STR-STAUFG sy-vline 
WA_CPHEADINF_STR-LINE sy-vline 
WA_CPHEADINF_STR-AEUZEIT sy-vline 
WA_CPHEADINF_STR-QM_IP_TYPE_ALLOWED sy-vline 
WA_CPHEADINF_STR-SUBTYPE sy-vline 
WA_CPHEADINF_STR-ALTEXT sy-vline 
WA_CPHEADINF_STR-REWORK sy-vline 
WA_CPHEADINF_STR-FLG_ECM sy-vline 
WA_CPHEADINF_STR-FLG_ECM_PAR sy-vline 
WA_CPHEADINF_STR-RELAXED sy-vline 
WA_CPHEADINF_STR-EXECUTION_IN_ME sy-vline 
WA_CPHEADINF_STR-ERP_INTEGRATION sy-vline 
WA_CPHEADINF_STR-REFERENCE_TEMPLATE_TYPE sy-vline 
WA_CPHEADINF_STR-REFERENCE_TEMPLATE_CATEGORY sy-vline 
WA_CPHEADINF_STR-REFERENCE_TEMPLATE_OWNER sy-vline      INTO ld_text SEPARATED BY SPACE.

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