ABAP Select data from SAP table CRMT_BACKORDER_RES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_BACKORDER_RES
*  INTO TABLE @DATA(IT_CRMT_BACKORDER_RES2).
*--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_CRMT_BACKORDER_RES INDEX 1 INTO DATA(WA_CRMT_BACKORDER_RES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_BACKORDER_RES>-REF_GUID = 1.
<CRMT_BACKORDER_RES>-RBA_IND = 1.
<CRMT_BACKORDER_RES>-ITEM = 1.
<CRMT_BACKORDER_RES>-HEADER_GUID = 1.
<CRMT_BACKORDER_RES>-ITEM_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_BACKORDER_RES-PARENT, sy-vline,
  WA_CRMT_BACKORDER_RES-ANCHOR, sy-vline,
  WA_CRMT_BACKORDER_RES-PREVIOUS_GUID, sy-vline,
  WA_CRMT_BACKORDER_RES-TAX_DEPART_JURIS, sy-vline,
  WA_CRMT_BACKORDER_RES-TAX_DEPART_REG, sy-vline,
  WA_CRMT_BACKORDER_RES-TAX_COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_BACKORDER_RES 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_CRMT_BACKORDER_RES 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_CRMT_BACKORDER_RES INTO WA_CRMT_BACKORDER_RES.


*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_CRMT_BACKORDER_RES_STR, 
REF_GUID TYPE STRING,
RBA_IND TYPE STRING,
ITEM TYPE STRING,
HEADER_GUID TYPE STRING,
ITEM_GUID TYPE STRING,
PARENT TYPE STRING,
ANCHOR TYPE STRING,
PREVIOUS_GUID TYPE STRING,
TAX_DEPART_JURIS TYPE STRING,
TAX_DEPART_REG TYPE STRING,
TAX_COUNTRY TYPE STRING,
SUBST_REASON TYPE STRING,
MAINITEM TYPE STRING,
CONF_MODE TYPE STRING,
ITM_USAGE TYPE STRING,
ITM_TYPE_USAGE TYPE STRING,
RRFLG TYPE STRING,
ERROR_FLAG TYPE STRING,
SUBITEM TYPE STRING,
ITEM_EXTENSION TYPE STRING,
ITEM_BT_EXTENSION TYPE STRING,
SUBITEM_SCHEDLIN TYPE STRING,
RESULT_SCHEDLIN TYPE STRING,
REQ_SCHEDLIN TYPE STRING,
LINE TYPE STRING,
BOP_TRGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_BACKORDER_RES_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_CRMT_BACKORDER_RES_STR-REF_GUID sy-vline 
WA_CRMT_BACKORDER_RES_STR-RBA_IND sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITEM sy-vline 
WA_CRMT_BACKORDER_RES_STR-HEADER_GUID sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITEM_GUID sy-vline 
WA_CRMT_BACKORDER_RES_STR-PARENT sy-vline 
WA_CRMT_BACKORDER_RES_STR-ANCHOR sy-vline 
WA_CRMT_BACKORDER_RES_STR-PREVIOUS_GUID sy-vline 
WA_CRMT_BACKORDER_RES_STR-TAX_DEPART_JURIS sy-vline 
WA_CRMT_BACKORDER_RES_STR-TAX_DEPART_REG sy-vline 
WA_CRMT_BACKORDER_RES_STR-TAX_COUNTRY sy-vline 
WA_CRMT_BACKORDER_RES_STR-SUBST_REASON sy-vline 
WA_CRMT_BACKORDER_RES_STR-MAINITEM sy-vline 
WA_CRMT_BACKORDER_RES_STR-CONF_MODE sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITM_USAGE sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITM_TYPE_USAGE sy-vline 
WA_CRMT_BACKORDER_RES_STR-RRFLG sy-vline 
WA_CRMT_BACKORDER_RES_STR-ERROR_FLAG sy-vline 
WA_CRMT_BACKORDER_RES_STR-SUBITEM sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITEM_EXTENSION sy-vline 
WA_CRMT_BACKORDER_RES_STR-ITEM_BT_EXTENSION sy-vline 
WA_CRMT_BACKORDER_RES_STR-SUBITEM_SCHEDLIN sy-vline 
WA_CRMT_BACKORDER_RES_STR-RESULT_SCHEDLIN sy-vline 
WA_CRMT_BACKORDER_RES_STR-REQ_SCHEDLIN sy-vline 
WA_CRMT_BACKORDER_RES_STR-LINE sy-vline 
WA_CRMT_BACKORDER_RES_STR-BOP_TRGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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