ABAP Select data from SAP table /SMB/AR_CHG_REC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SMB/AR_CHG_REC 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 /SMB/AR_CHG_REC. 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 /SMB/AR_CHG_REC 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_/SMB/AR_CHG_REC TYPE STANDARD TABLE OF /SMB/AR_CHG_REC,
      WA_/SMB/AR_CHG_REC TYPE /SMB/AR_CHG_REC,
      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: </SMB/AR_CHG_REC> TYPE /SMB/AR_CHG_REC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SMB/AR_CHG_REC
  INTO TABLE IT_/SMB/AR_CHG_REC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SMB/AR_CHG_REC
*  INTO TABLE @DATA(IT_/SMB/AR_CHG_REC2).
*--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_/SMB/AR_CHG_REC INDEX 1 INTO DATA(WA_/SMB/AR_CHG_REC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SMB/AR_CHG_REC ASSIGNING </SMB/AR_CHG_REC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SMB/AR_CHG_REC>-MANDT = 1.
</SMB/AR_CHG_REC>-ARCH_KEY = 1.
</SMB/AR_CHG_REC>-CHG_GROUP_ID = 1.
</SMB/AR_CHG_REC>-SOLUID = 1.
</SMB/AR_CHG_REC>-FILENAME = 1.

ENDLOOP.

LOOP AT IT_/SMB/AR_CHG_REC INTO WA_/SMB/AR_CHG_REC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SMB/AR_CHG_REC-VARIANT_ID, sy-vline,
  WA_/SMB/AR_CHG_REC-PARAM_NAME, sy-vline,
  WA_/SMB/AR_CHG_REC-CHG_DATE, sy-vline,
  WA_/SMB/AR_CHG_REC-SEQNUM, sy-vline,
  WA_/SMB/AR_CHG_REC-CHG_TYPE, sy-vline,
  WA_/SMB/AR_CHG_REC-OLD_VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SMB/AR_CHG_REC 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_/SMB/AR_CHG_REC 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_/SMB/AR_CHG_REC INTO WA_/SMB/AR_CHG_REC.


*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_/SMB/AR_CHG_REC_STR, 
MANDT TYPE STRING,
ARCH_KEY TYPE STRING,
CHG_GROUP_ID TYPE STRING,
SOLUID TYPE STRING,
FILENAME TYPE STRING,
VARIANT_ID TYPE STRING,
PARAM_NAME TYPE STRING,
CHG_DATE TYPE STRING,
SEQNUM TYPE STRING,
CHG_TYPE TYPE STRING,
OLD_VALUE TYPE STRING,
NEW_VALUE TYPE STRING,
CREATOR TYPE STRING,
DESCRIPTION TYPE STRING,
APPLIED TYPE STRING,
MARK_APPLY TYPE STRING,
REC_SET TYPE STRING,
EDITED TYPE STRING,
PARAM_DESC TYPE STRING,
TDC_ID TYPE STRING,
TDC_PARAM_NAME TYPE STRING,
VARIANT_DESC TYPE STRING,
VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SMB/AR_CHG_REC_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_/SMB/AR_CHG_REC_STR-MANDT sy-vline 
WA_/SMB/AR_CHG_REC_STR-ARCH_KEY sy-vline 
WA_/SMB/AR_CHG_REC_STR-CHG_GROUP_ID sy-vline 
WA_/SMB/AR_CHG_REC_STR-SOLUID sy-vline 
WA_/SMB/AR_CHG_REC_STR-FILENAME sy-vline 
WA_/SMB/AR_CHG_REC_STR-VARIANT_ID sy-vline 
WA_/SMB/AR_CHG_REC_STR-PARAM_NAME sy-vline 
WA_/SMB/AR_CHG_REC_STR-CHG_DATE sy-vline 
WA_/SMB/AR_CHG_REC_STR-SEQNUM sy-vline 
WA_/SMB/AR_CHG_REC_STR-CHG_TYPE sy-vline 
WA_/SMB/AR_CHG_REC_STR-OLD_VALUE sy-vline 
WA_/SMB/AR_CHG_REC_STR-NEW_VALUE sy-vline 
WA_/SMB/AR_CHG_REC_STR-CREATOR sy-vline 
WA_/SMB/AR_CHG_REC_STR-DESCRIPTION sy-vline 
WA_/SMB/AR_CHG_REC_STR-APPLIED sy-vline 
WA_/SMB/AR_CHG_REC_STR-MARK_APPLY sy-vline 
WA_/SMB/AR_CHG_REC_STR-REC_SET sy-vline 
WA_/SMB/AR_CHG_REC_STR-EDITED sy-vline 
WA_/SMB/AR_CHG_REC_STR-PARAM_DESC sy-vline 
WA_/SMB/AR_CHG_REC_STR-TDC_ID sy-vline 
WA_/SMB/AR_CHG_REC_STR-TDC_PARAM_NAME sy-vline 
WA_/SMB/AR_CHG_REC_STR-VARIANT_DESC sy-vline 
WA_/SMB/AR_CHG_REC_STR-VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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