ABAP Select data from SAP table CENGRECORDHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENGRECORDHDR
*  INTO TABLE @DATA(IT_CENGRECORDHDR2).
*--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_CENGRECORDHDR INDEX 1 INTO DATA(WA_CENGRECORDHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CENGRECORDHDR>-MANDT = 1.
<CENGRECORDHDR>-ENGINEERINGRECORDUUID = 1.
<CENGRECORDHDR>-ENGINEERINGRECORD = 1.
<CENGRECORDHDR>-ENGINEERINGRECORDDESCRIPTION = 1.
<CENGRECORDHDR>-ENGINEERINGRECORDTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENGRECORDHDR-STATUS, sy-vline,
  WA_CENGRECORDHDR-STATUSNAME, sy-vline,
  WA_CENGRECORDHDR-CHANGEREASON, sy-vline,
  WA_CENGRECORDHDR-CASEREASONNAME, sy-vline,
  WA_CENGRECORDHDR-CREATEDBYUSER, sy-vline,
  WA_CENGRECORDHDR-CREATEDBYUSERNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENGRECORDHDR 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_CENGRECORDHDR 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_CENGRECORDHDR INTO WA_CENGRECORDHDR.


*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 ENGINEERINGRECORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CENGRECORDHDR-ENGINEERINGRECORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENGRECORDHDR-ENGINEERINGRECORD.
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_CENGRECORDHDR_STR, 
MANDT TYPE STRING,
ENGINEERINGRECORDUUID TYPE STRING,
ENGINEERINGRECORD TYPE STRING,
ENGINEERINGRECORDDESCRIPTION TYPE STRING,
ENGINEERINGRECORDTYPE TYPE STRING,
STATUS TYPE STRING,
STATUSNAME TYPE STRING,
CHANGEREASON TYPE STRING,
CASEREASONNAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
CREATIONDATE TYPE STRING,
PRIORITYCODE TYPE STRING,
CHANGECOORDINATOR TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDBYUSERNAME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
ENGINEERINGRECORDURL TYPE STRING,
ISCURRENTUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENGRECORDHDR_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_CENGRECORDHDR_STR-MANDT sy-vline 
WA_CENGRECORDHDR_STR-ENGINEERINGRECORDUUID sy-vline 
WA_CENGRECORDHDR_STR-ENGINEERINGRECORD sy-vline 
WA_CENGRECORDHDR_STR-ENGINEERINGRECORDDESCRIPTION sy-vline 
WA_CENGRECORDHDR_STR-ENGINEERINGRECORDTYPE sy-vline 
WA_CENGRECORDHDR_STR-STATUS sy-vline 
WA_CENGRECORDHDR_STR-STATUSNAME sy-vline 
WA_CENGRECORDHDR_STR-CHANGEREASON sy-vline 
WA_CENGRECORDHDR_STR-CASEREASONNAME sy-vline 
WA_CENGRECORDHDR_STR-CREATEDBYUSER sy-vline 
WA_CENGRECORDHDR_STR-CREATEDBYUSERNAME sy-vline 
WA_CENGRECORDHDR_STR-CREATIONDATE sy-vline 
WA_CENGRECORDHDR_STR-PRIORITYCODE sy-vline 
WA_CENGRECORDHDR_STR-CHANGECOORDINATOR sy-vline 
WA_CENGRECORDHDR_STR-LASTCHANGEDBYUSER sy-vline 
WA_CENGRECORDHDR_STR-LASTCHANGEDBYUSERNAME sy-vline 
WA_CENGRECORDHDR_STR-LASTCHANGEDATE sy-vline 
WA_CENGRECORDHDR_STR-ENGINEERINGRECORDURL sy-vline 
WA_CENGRECORDHDR_STR-ISCURRENTUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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