ABAP Select data from SAP table TLRE_THM_SCHEME 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 TLRE_THM_SCHEME 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 TLRE_THM_SCHEME. 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 TLRE_THM_SCHEME 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_TLRE_THM_SCHEME TYPE STANDARD TABLE OF TLRE_THM_SCHEME,
      WA_TLRE_THM_SCHEME TYPE TLRE_THM_SCHEME,
      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: <TLRE_THM_SCHEME> TYPE TLRE_THM_SCHEME.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TLRE_THM_SCHEME
*  INTO TABLE @DATA(IT_TLRE_THM_SCHEME2).
*--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_TLRE_THM_SCHEME INDEX 1 INTO DATA(WA_TLRE_THM_SCHEME2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TLRE_THM_SCHEME>-THRESHOLD_SCHEME = 1.
<TLRE_THM_SCHEME>-THRESHOLD_CURRENCY = 1.
<TLRE_THM_SCHEME>-LONG_TXT = 1.
<TLRE_THM_SCHEME>-SHORT_TXT = 1.
<TLRE_THM_SCHEME>-REP_CUTOFF_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TLRE_THM_SCHEME-REP_START_DATE, sy-vline,
  WA_TLRE_THM_SCHEME-UTI_VALID_DATE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_TLRE_THM_SCHEME 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_TLRE_THM_SCHEME 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_TLRE_THM_SCHEME INTO WA_TLRE_THM_SCHEME.


*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_TLRE_THM_SCHEME_STR, 
THRESHOLD_SCHEME TYPE STRING,
THRESHOLD_CURRENCY TYPE STRING,
LONG_TXT TYPE STRING,
SHORT_TXT TYPE STRING,
REP_CUTOFF_DATE TYPE STRING,
REP_START_DATE TYPE STRING,
UTI_VALID_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TLRE_THM_SCHEME_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_TLRE_THM_SCHEME_STR-THRESHOLD_SCHEME sy-vline 
WA_TLRE_THM_SCHEME_STR-THRESHOLD_CURRENCY sy-vline 
WA_TLRE_THM_SCHEME_STR-LONG_TXT sy-vline 
WA_TLRE_THM_SCHEME_STR-SHORT_TXT sy-vline 
WA_TLRE_THM_SCHEME_STR-REP_CUTOFF_DATE sy-vline 
WA_TLRE_THM_SCHEME_STR-REP_START_DATE sy-vline 
WA_TLRE_THM_SCHEME_STR-UTI_VALID_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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