ABAP Select data from SAP table TRMC_CORPORATE_INFORMATION_400 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRMC_CORPORATE_INFORMATION_400 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 TRMC_CORPORATE_INFORMATION_400. 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 TRMC_CORPORATE_INFORMATION_400 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_TRMC_CORPORATE_INFORMATION_400 TYPE STANDARD TABLE OF TRMC_CORPORATE_INFORMATION_400,
      WA_TRMC_CORPORATE_INFORMATION_400 TYPE TRMC_CORPORATE_INFORMATION_400,
      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: <TRMC_CORPORATE_INFORMATION_400> TYPE TRMC_CORPORATE_INFORMATION_400.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TRMC_CORPORATE_INFORMATION_400.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TRMC_CORPORATE_INFORMATION_400
  INTO TABLE IT_TRMC_CORPORATE_INFORMATION_400.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRMC_CORPORATE_INFORMATION_400
*  INTO TABLE @DATA(IT_TRMC_CORPORATE_INFORMATION_4002).
*--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_TRMC_CORPORATE_INFORMATION_400 INDEX 1 INTO DATA(WA_TRMC_CORPORATE_INFORMATION_4002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TRMC_CORPORATE_INFORMATION_400 ASSIGNING <TRMC_CORPORATE_INFORMATION_400>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRMC_CORPORATE_INFORMATION_400>-CONTROLLER = 1.
<TRMC_CORPORATE_INFORMATION_400>-HIERARCHY_RECORD_HEADER = 1.
<TRMC_CORPORATE_INFORMATION_400>-CONTROLLER = 1.
<TRMC_CORPORATE_INFORMATION_400>-SEQUENCE_NUM = 1.
<TRMC_CORPORATE_INFORMATION_400>-STATUS_CODE = 1.

ENDLOOP.

LOOP AT IT_TRMC_CORPORATE_INFORMATION_400 INTO WA_TRMC_CORPORATE_INFORMATION_400.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRMC_CORPORATE_INFORMATION_400-MASTER_CARD_REC_SEQ_NUM, sy-vline,
  WA_TRMC_CORPORATE_INFORMATION_400-MASTER_CARD_LOAD_DATE, sy-vline,
  WA_TRMC_CORPORATE_INFORMATION_400-MASTER_CARD_LOAD_TIME, sy-vline,
  WA_TRMC_CORPORATE_INFORMATION_400-REJECTION_REASON, sy-vline,
  WA_TRMC_CORPORATE_INFORMATION_400-REJECTION_REASON2, sy-vline,
  WA_TRMC_CORPORATE_INFORMATION_400-REJECTION_REASON3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRMC_CORPORATE_INFORMATION_400 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_TRMC_CORPORATE_INFORMATION_400 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_TRMC_CORPORATE_INFORMATION_400 INTO WA_TRMC_CORPORATE_INFORMATION_400.


*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_TRMC_CORPORATE_INFORMATION_400_STR, 
CONTROLLER TYPE STRING,
HIERARCHY_RECORD_HEADER TYPE STRING,
CONTROLLER TYPE STRING,
SEQUENCE_NUM TYPE STRING,
STATUS_CODE TYPE STRING,
MASTER_CARD_REC_SEQ_NUM TYPE STRING,
MASTER_CARD_LOAD_DATE TYPE STRING,
MASTER_CARD_LOAD_TIME TYPE STRING,
REJECTION_REASON TYPE STRING,
REJECTION_REASON2 TYPE STRING,
REJECTION_REASON3 TYPE STRING,
ALLOW_MASTER_CARD_TAX_ESTIMATI TYPE STRING,
PROCESSING_COMPANY_NUM TYPE STRING,
PROCESSING_CORPORATE_ACCOUNT TYPE STRING,
BILLING_TYPE TYPE STRING,
CYCLE TYPE STRING,
CYCLE_DATE_INDICATOR TYPE STRING,
NAME_LOCALE_CODE TYPE STRING,
NAME_LINE1 TYPE STRING,
NAME_LINE2 TYPE STRING,
ALTERNATE_NAME_LOCALE_CODE TYPE STRING,
ALTERNATE_NAME_LINE1 TYPE STRING,
ALTERNATE_NAME_LINE2 TYPE STRING,
BILLING_CURRENCY_CODE TYPE STRING,
ANNUAL_FEE_CONTROL_ACCOUNT TYPE STRING,
ANNUAL_FEE_RENEWAL_MONTH TYPE STRING,
PAYMENT_DUE_DATE TYPE STRING,
COST_CENTER TYPE STRING,
INTERNAL_ACCOUNTING_CODE TYPE STRING,
CREDIT_LIMIT TYPE STRING,
CONTROLLER TYPE STRING,
EXPONENT TYPE STRING,
CONTENT TYPE STRING,
USE_SMART_DATA_ON_LINE TYPE STRING,
USE_SMART_DATA_EXPRESS TYPE STRING,
USE_SMART_DATA_NEXT_GENERATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRMC_CORPORATE_INFORMATION_400_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_TRMC_CORPORATE_INFORMATION_400_STR-CONTROLLER sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-HIERARCHY_RECORD_HEADER sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CONTROLLER sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-SEQUENCE_NUM sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-STATUS_CODE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-MASTER_CARD_REC_SEQ_NUM sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-MASTER_CARD_LOAD_DATE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-MASTER_CARD_LOAD_TIME sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-REJECTION_REASON sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-REJECTION_REASON2 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-REJECTION_REASON3 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ALLOW_MASTER_CARD_TAX_ESTIMATI sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-PROCESSING_COMPANY_NUM sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-PROCESSING_CORPORATE_ACCOUNT sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-BILLING_TYPE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CYCLE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CYCLE_DATE_INDICATOR sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-NAME_LOCALE_CODE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-NAME_LINE1 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-NAME_LINE2 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ALTERNATE_NAME_LOCALE_CODE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ALTERNATE_NAME_LINE1 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ALTERNATE_NAME_LINE2 sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-BILLING_CURRENCY_CODE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ANNUAL_FEE_CONTROL_ACCOUNT sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-ANNUAL_FEE_RENEWAL_MONTH sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-PAYMENT_DUE_DATE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-COST_CENTER sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-INTERNAL_ACCOUNTING_CODE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CREDIT_LIMIT sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CONTROLLER sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-EXPONENT sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-CONTENT sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-USE_SMART_DATA_ON_LINE sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-USE_SMART_DATA_EXPRESS sy-vline 
WA_TRMC_CORPORATE_INFORMATION_400_STR-USE_SMART_DATA_NEXT_GENERATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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