ABAP Select data from SAP table ISX_PREPAID_ACCOUNT_READ_RS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISX_PREPAID_ACCOUNT_READ_RS
*  INTO TABLE @DATA(IT_ISX_PREPAID_ACCOUNT_READ_RS2).
*--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_ISX_PREPAID_ACCOUNT_READ_RS INDEX 1 INTO DATA(WA_ISX_PREPAID_ACCOUNT_READ_RS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISX_PREPAID_ACCOUNT_READ_RS>-CONTROLLER = 1.
<ISX_PREPAID_ACCOUNT_READ_RS>-RESPONSE = 1.
<ISX_PREPAID_ACCOUNT_READ_RS>-CONTROLLER = 1.
<ISX_PREPAID_ACCOUNT_READ_RS>-BASE = 1.
<ISX_PREPAID_ACCOUNT_READ_RS>-CONTROLLER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISX_PREPAID_ACCOUNT_READ_RS-STATUS, sy-vline,
  WA_ISX_PREPAID_ACCOUNT_READ_RS-MESSAGE, sy-vline,
  WA_ISX_PREPAID_ACCOUNT_READ_RS-ERROR, sy-vline,
  WA_ISX_PREPAID_ACCOUNT_READ_RS-CONTROLLER, sy-vline,
  WA_ISX_PREPAID_ACCOUNT_READ_RS-CATEGORY, sy-vline,
  WA_ISX_PREPAID_ACCOUNT_READ_RS-MESSAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISX_PREPAID_ACCOUNT_READ_RS 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_ISX_PREPAID_ACCOUNT_READ_RS 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_ISX_PREPAID_ACCOUNT_READ_RS INTO WA_ISX_PREPAID_ACCOUNT_READ_RS.


*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_ISX_PREPAID_ACCOUNT_READ_RS_STR, 
CONTROLLER TYPE STRING,
RESPONSE TYPE STRING,
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
STATUS TYPE STRING,
MESSAGE TYPE STRING,
ERROR TYPE STRING,
CONTROLLER TYPE STRING,
CATEGORY TYPE STRING,
MESSAGE TYPE STRING,
CAUSE TYPE STRING,
CONTROLLER TYPE STRING,
MODULE TYPE STRING,
CODE TYPE STRING,
MESSAGE TYPE STRING,
CAUSED_BY TYPE STRING,
PREPAID_ACCOUNT TYPE STRING,
CONTROLLER TYPE STRING,
ID TYPE STRING,
SUBSCRIBER_ACCOUNT_ID TYPE STRING,
DESCRIPTION TYPE STRING,
CURRENCY_CODE TYPE STRING,
EMPTY_LIMIT TYPE STRING,
BALANCE TYPE STRING,
CURRENT_STATE TYPE STRING,
STATE_SCHEDULE TYPE STRING,
CONTROLLER TYPE STRING,
ITEM TYPE STRING,
AMOUNT_ALERT TYPE STRING,
STATE_CHANGE_ALERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISX_PREPAID_ACCOUNT_READ_RS_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_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-RESPONSE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-BASE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-STATUS sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-MESSAGE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-ERROR sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CATEGORY sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-MESSAGE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CAUSE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-MODULE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CODE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-MESSAGE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CAUSED_BY sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-PREPAID_ACCOUNT sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-ID sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-SUBSCRIBER_ACCOUNT_ID sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-DESCRIPTION sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CURRENCY_CODE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-EMPTY_LIMIT sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-BALANCE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CURRENT_STATE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-STATE_SCHEDULE sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-CONTROLLER sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-ITEM sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-AMOUNT_ALERT sy-vline 
WA_ISX_PREPAID_ACCOUNT_READ_RS_STR-STATE_CHANGE_ALERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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