ABAP Select data from SAP table TLCS_LC_PRESENTATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TLCS_LC_PRESENTATION
*  INTO TABLE @DATA(IT_TLCS_LC_PRESENTATION2).
*--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_TLCS_LC_PRESENTATION INDEX 1 INTO DATA(WA_TLCS_LC_PRESENTATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TLCS_LC_PRESENTATION>-PRESENT_DATE = 1.
<TLCS_LC_PRESENTATION>-INTEREST_PAID_BY = 1.
<TLCS_LC_PRESENTATION>-SHIPMENT_DATE = 1.
<TLCS_LC_PRESENTATION>-STATUS = 1.
<TLCS_LC_PRESENTATION>-PRESENT_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TLCS_LC_PRESENTATION-SSTOGRD, sy-vline,
  WA_TLCS_LC_PRESENTATION-PRESENT_AMOUNT, sy-vline,
  WA_TLCS_LC_PRESENTATION-PRESENT_BANK, sy-vline,
  WA_TLCS_LC_PRESENTATION-PRESENT_DISCREPANCY, sy-vline,
  WA_TLCS_LC_PRESENTATION-PRESENT_DECREASE_AMOUNT, sy-vline,
  WA_TLCS_LC_PRESENTATION-PRESENT_REA_CRE_LINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TLCS_LC_PRESENTATION 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_TLCS_LC_PRESENTATION 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_TLCS_LC_PRESENTATION INTO WA_TLCS_LC_PRESENTATION.


*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 PRESENT_BANK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TLCS_LC_PRESENTATION-PRESENT_BANK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TLCS_LC_PRESENTATION-PRESENT_BANK.
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_TLCS_LC_PRESENTATION_STR, 
PRESENT_DATE TYPE STRING,
INTEREST_PAID_BY TYPE STRING,
SHIPMENT_DATE TYPE STRING,
STATUS TYPE STRING,
PRESENT_ID TYPE STRING,
SSTOGRD TYPE STRING,
PRESENT_AMOUNT TYPE STRING,
PRESENT_BANK TYPE STRING,
PRESENT_DISCREPANCY TYPE STRING,
PRESENT_DECREASE_AMOUNT TYPE STRING,
PRESENT_REA_CRE_LINE TYPE STRING,
PRESENT_PAY_AMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TLCS_LC_PRESENTATION_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_TLCS_LC_PRESENTATION_STR-PRESENT_DATE sy-vline 
WA_TLCS_LC_PRESENTATION_STR-INTEREST_PAID_BY sy-vline 
WA_TLCS_LC_PRESENTATION_STR-SHIPMENT_DATE sy-vline 
WA_TLCS_LC_PRESENTATION_STR-STATUS sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_ID sy-vline 
WA_TLCS_LC_PRESENTATION_STR-SSTOGRD sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_AMOUNT sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_BANK sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_DISCREPANCY sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_DECREASE_AMOUNT sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_REA_CRE_LINE sy-vline 
WA_TLCS_LC_PRESENTATION_STR-PRESENT_PAY_AMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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