ABAP Select data from SAP table ISX_READ_CC_CTR_REQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISX_READ_CC_CTR_REQ 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_READ_CC_CTR_REQ. 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_READ_CC_CTR_REQ 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_READ_CC_CTR_REQ TYPE STANDARD TABLE OF ISX_READ_CC_CTR_REQ,
      WA_ISX_READ_CC_CTR_REQ TYPE ISX_READ_CC_CTR_REQ,
      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_READ_CC_CTR_REQ> TYPE ISX_READ_CC_CTR_REQ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISX_READ_CC_CTR_REQ
*  INTO TABLE @DATA(IT_ISX_READ_CC_CTR_REQ2).
*--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_READ_CC_CTR_REQ INDEX 1 INTO DATA(WA_ISX_READ_CC_CTR_REQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISX_READ_CC_CTR_REQ>-CONTROLLER = 1.
<ISX_READ_CC_CTR_REQ>-REQUEST = 1.
<ISX_READ_CC_CTR_REQ>-CONTROLLER = 1.
<ISX_READ_CC_CTR_REQ>-CHARGING_CONTRACT_SEARCH_FILTE = 1.
<ISX_READ_CC_CTR_REQ>-CONTROLLER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISX_READ_CC_CTR_REQ-BASE, sy-vline,
  WA_ISX_READ_CC_CTR_REQ-CONTROLLER, sy-vline,
  WA_ISX_READ_CC_CTR_REQ-SEARCH_WINDOW, sy-vline,
  WA_ISX_READ_CC_CTR_REQ-CONTROLLER, sy-vline,
  WA_ISX_READ_CC_CTR_REQ-WINDOW_SIZE, sy-vline,
  WA_ISX_READ_CC_CTR_REQ-FROM_UNIQUE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISX_READ_CC_CTR_REQ 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_READ_CC_CTR_REQ 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_READ_CC_CTR_REQ INTO WA_ISX_READ_CC_CTR_REQ.


*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_READ_CC_CTR_REQ_STR, 
CONTROLLER TYPE STRING,
REQUEST TYPE STRING,
CONTROLLER TYPE STRING,
CHARGING_CONTRACT_SEARCH_FILTE TYPE STRING,
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
SEARCH_WINDOW TYPE STRING,
CONTROLLER TYPE STRING,
WINDOW_SIZE TYPE STRING,
FROM_UNIQUE_ID TYPE STRING,
TOTAL_COUNT_REQUIRED TYPE STRING,
ID TYPE STRING,
CONTROLLER TYPE STRING,
CHOICE TYPE STRING,
SELECTION TYPE STRING,
CONTROLLER TYPE STRING,
ENUMERATION TYPE STRING,
CONTROLLER TYPE STRING,
VALUE TYPE STRING,
PATTERN TYPE STRING,
SUBSCRIBER_ACCOUNT_ID TYPE STRING,
CONTROLLER TYPE STRING,
CHOICE TYPE STRING,
SELECTION TYPE STRING,
CONTROLLER TYPE STRING,
ENUMERATION TYPE STRING,
CONTROLLER TYPE STRING,
VALUE TYPE STRING,
PATTERN TYPE STRING,
ADDITIONAL_INFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISX_READ_CC_CTR_REQ_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_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-REQUEST sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CHARGING_CONTRACT_SEARCH_FILTE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-BASE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-SEARCH_WINDOW sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-WINDOW_SIZE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-FROM_UNIQUE_ID sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-TOTAL_COUNT_REQUIRED sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-ID sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CHOICE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-SELECTION sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-ENUMERATION sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-VALUE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-PATTERN sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-SUBSCRIBER_ACCOUNT_ID sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CHOICE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-SELECTION sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-ENUMERATION sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-CONTROLLER sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-VALUE sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-PATTERN sy-vline 
WA_ISX_READ_CC_CTR_REQ_STR-ADDITIONAL_INFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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