ABAP Select data from SAP table /SRMERP/S_ACC_ROOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SRMERP/S_ACC_ROOT
*  INTO TABLE @DATA(IT_/SRMERP/S_ACC_ROOT2).
*--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_/SRMERP/S_ACC_ROOT INDEX 1 INTO DATA(WA_/SRMERP/S_ACC_ROOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SRMERP/S_ACC_ROOT>-KEY = 1.
</SRMERP/S_ACC_ROOT>-PARENT_KEY = 1.
</SRMERP/S_ACC_ROOT>-ROOT_KEY = 1.
</SRMERP/S_ACC_ROOT>-HOST_BO_KEY = 1.
</SRMERP/S_ACC_ROOT>-HOST_NODE_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SRMERP/S_ACC_ROOT-HOST_KEY, sy-vline,
  WA_/SRMERP/S_ACC_ROOT-CREA_DATE_TIME, sy-vline,
  WA_/SRMERP/S_ACC_ROOT-CREA_UNAME, sy-vline,
  WA_/SRMERP/S_ACC_ROOT-LCHG_DATE_TIME, sy-vline,
  WA_/SRMERP/S_ACC_ROOT-LCHG_UNAME, sy-vline,
  WA_/SRMERP/S_ACC_ROOT-/SRMERP/E_ACCRT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SRMERP/S_ACC_ROOT 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_/SRMERP/S_ACC_ROOT 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_/SRMERP/S_ACC_ROOT INTO WA_/SRMERP/S_ACC_ROOT.


*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_/SRMERP/S_ACC_ROOT_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
HOST_BO_KEY TYPE STRING,
HOST_NODE_KEY TYPE STRING,
HOST_KEY TYPE STRING,
CREA_DATE_TIME TYPE STRING,
CREA_UNAME TYPE STRING,
LCHG_DATE_TIME TYPE STRING,
LCHG_UNAME TYPE STRING,
/SRMERP/E_ACCRT TYPE STRING,
KNTTP TYPE STRING,
BUKRS TYPE STRING,
MENGE TYPE STRING,
NETPR TYPE STRING,
KZVBR TYPE STRING,
KZBWS TYPE STRING,
SOBKZ TYPE STRING,
VRTKZ TYPE STRING,
TWRKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SRMERP/S_ACC_ROOT_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_/SRMERP/S_ACC_ROOT_STR-KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-PARENT_KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-ROOT_KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-HOST_BO_KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-HOST_NODE_KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-HOST_KEY sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-CREA_DATE_TIME sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-CREA_UNAME sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-LCHG_DATE_TIME sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-LCHG_UNAME sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-/SRMERP/E_ACCRT sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-KNTTP sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-BUKRS sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-MENGE sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-NETPR sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-KZVBR sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-KZBWS sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-SOBKZ sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-VRTKZ sy-vline 
WA_/SRMERP/S_ACC_ROOT_STR-TWRKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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