ABAP Select data from SAP table TRST_NOM_CORR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRST_NOM_CORR
*  INTO TABLE @DATA(IT_TRST_NOM_CORR2).
*--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_TRST_NOM_CORR INDEX 1 INTO DATA(WA_TRST_NOM_CORR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRST_NOM_CORR>-MANDT = 1.
<TRST_NOM_CORR>-COMPANY_CODE = 1.
<TRST_NOM_CORR>-NOM_CORR_NUMBER = 1.
<TRST_NOM_CORR>-STATUS = 1.
<TRST_NOM_CORR>-SECURITY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRST_NOM_CORR-SEC_ACCOUNT, sy-vline,
  WA_TRST_NOM_CORR-POSITION_DATE, sy-vline,
  WA_TRST_NOM_CORR-NOMINAL_AMT_DIFF, sy-vline,
  WA_TRST_NOM_CORR-NOMINAL_ORG_AMT, sy-vline,
  WA_TRST_NOM_CORR-NOMINAL_CURR, sy-vline,
  WA_TRST_NOM_CORR-SIGN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRST_NOM_CORR 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_TRST_NOM_CORR 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_TRST_NOM_CORR INTO WA_TRST_NOM_CORR.


*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.

*Conversion exit ALPHA, internal->external for field SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRST_NOM_CORR-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_NOM_CORR-SECURITY_ID.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TRST_NOM_CORR_STR, 
MANDT TYPE STRING,
COMPANY_CODE TYPE STRING,
NOM_CORR_NUMBER TYPE STRING,
STATUS TYPE STRING,
SECURITY_ID TYPE STRING,
SEC_ACCOUNT TYPE STRING,
POSITION_DATE TYPE STRING,
NOMINAL_AMT_DIFF TYPE STRING,
NOMINAL_ORG_AMT TYPE STRING,
NOMINAL_CURR TYPE STRING,
SIGN TYPE STRING,
DIS_FLOWTYPE TYPE STRING,
REV_REASON TYPE STRING,
BUSTRANSID TYPE STRING,
CRUSER TYPE STRING,
DCRDAT TYPE STRING,
TCRTIM TYPE STRING,
UPUSER TYPE STRING,
DUPDAT TYPE STRING,
TUPTIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRST_NOM_CORR_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_TRST_NOM_CORR_STR-MANDT sy-vline 
WA_TRST_NOM_CORR_STR-COMPANY_CODE sy-vline 
WA_TRST_NOM_CORR_STR-NOM_CORR_NUMBER sy-vline 
WA_TRST_NOM_CORR_STR-STATUS sy-vline 
WA_TRST_NOM_CORR_STR-SECURITY_ID sy-vline 
WA_TRST_NOM_CORR_STR-SEC_ACCOUNT sy-vline 
WA_TRST_NOM_CORR_STR-POSITION_DATE sy-vline 
WA_TRST_NOM_CORR_STR-NOMINAL_AMT_DIFF sy-vline 
WA_TRST_NOM_CORR_STR-NOMINAL_ORG_AMT sy-vline 
WA_TRST_NOM_CORR_STR-NOMINAL_CURR sy-vline 
WA_TRST_NOM_CORR_STR-SIGN sy-vline 
WA_TRST_NOM_CORR_STR-DIS_FLOWTYPE sy-vline 
WA_TRST_NOM_CORR_STR-REV_REASON sy-vline 
WA_TRST_NOM_CORR_STR-BUSTRANSID sy-vline 
WA_TRST_NOM_CORR_STR-CRUSER sy-vline 
WA_TRST_NOM_CORR_STR-DCRDAT sy-vline 
WA_TRST_NOM_CORR_STR-TCRTIM sy-vline 
WA_TRST_NOM_CORR_STR-UPUSER sy-vline 
WA_TRST_NOM_CORR_STR-DUPDAT sy-vline 
WA_TRST_NOM_CORR_STR-TUPTIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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