ABAP Select data from SAP table TRLET_LOAN_FLOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRLET_LOAN_FLOW
*  INTO TABLE @DATA(IT_TRLET_LOAN_FLOW2).
*--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_TRLET_LOAN_FLOW INDEX 1 INTO DATA(WA_TRLET_LOAN_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRLET_LOAN_FLOW>-MANDT = 1.
<TRLET_LOAN_FLOW>-COMPANY_CODE = 1.
<TRLET_LOAN_FLOW>-RBELKPFD = 1.
<TRLET_LOAN_FLOW>-RPOSNR = 1.
<TRLET_LOAN_FLOW>-RUNID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRLET_LOAN_FLOW-DOCUMENTID, sy-vline,
  WA_TRLET_LOAN_FLOW-FLOW_NUMBER, sy-vline,
  WA_TRLET_LOAN_FLOW-LOANS_CONTRACT, sy-vline,
  WA_TRLET_LOAN_FLOW-RPNNR11, sy-vline,
  WA_TRLET_LOAN_FLOW-BUSTRANSCAT, sy-vline,
  WA_TRLET_LOAN_FLOW-POSTING_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRLET_LOAN_FLOW 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_TRLET_LOAN_FLOW 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_TRLET_LOAN_FLOW INTO WA_TRLET_LOAN_FLOW.


*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 RBELKPFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRLET_LOAN_FLOW-RBELKPFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLET_LOAN_FLOW-RBELKPFD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOANS_CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRLET_LOAN_FLOW-LOANS_CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLET_LOAN_FLOW-LOANS_CONTRACT.
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_TRLET_LOAN_FLOW_STR, 
MANDT TYPE STRING,
COMPANY_CODE TYPE STRING,
RBELKPFD TYPE STRING,
RPOSNR TYPE STRING,
RUNID TYPE STRING,
DOCUMENTID TYPE STRING,
FLOW_NUMBER TYPE STRING,
LOANS_CONTRACT TYPE STRING,
RPNNR11 TYPE STRING,
BUSTRANSCAT TYPE STRING,
POSTING_DATE TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
SBEWART TYPE STRING,
SBEWZITI TYPE STRING,
PRODUCT_TYPE TYPE STRING,
BNWHR TYPE STRING,
SNWHR TYPE STRING,
BBWHR TYPE STRING,
SBWHR TYPE STRING,
BHWHR TYPE STRING,
SHWHR TYPE STRING,
BCWHR TYPE STRING,
SCWHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRLET_LOAN_FLOW_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_TRLET_LOAN_FLOW_STR-MANDT sy-vline 
WA_TRLET_LOAN_FLOW_STR-COMPANY_CODE sy-vline 
WA_TRLET_LOAN_FLOW_STR-RBELKPFD sy-vline 
WA_TRLET_LOAN_FLOW_STR-RPOSNR sy-vline 
WA_TRLET_LOAN_FLOW_STR-RUNID sy-vline 
WA_TRLET_LOAN_FLOW_STR-DOCUMENTID sy-vline 
WA_TRLET_LOAN_FLOW_STR-FLOW_NUMBER sy-vline 
WA_TRLET_LOAN_FLOW_STR-LOANS_CONTRACT sy-vline 
WA_TRLET_LOAN_FLOW_STR-RPNNR11 sy-vline 
WA_TRLET_LOAN_FLOW_STR-BUSTRANSCAT sy-vline 
WA_TRLET_LOAN_FLOW_STR-POSTING_DATE sy-vline 
WA_TRLET_LOAN_FLOW_STR-DERF sy-vline 
WA_TRLET_LOAN_FLOW_STR-TERF sy-vline 
WA_TRLET_LOAN_FLOW_STR-SBEWART sy-vline 
WA_TRLET_LOAN_FLOW_STR-SBEWZITI sy-vline 
WA_TRLET_LOAN_FLOW_STR-PRODUCT_TYPE sy-vline 
WA_TRLET_LOAN_FLOW_STR-BNWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-SNWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-BBWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-SBWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-BHWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-SHWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-BCWHR sy-vline 
WA_TRLET_LOAN_FLOW_STR-SCWHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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