ABAP Select data from SAP table TTRCD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TTRCD
*  INTO TABLE @DATA(IT_TTRCD2).
*--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_TTRCD INDEX 1 INTO DATA(WA_TTRCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TTRCD>-MANDT = 1.
<TTRCD>-BUKRS = 1.
<TTRCD>-KONTO = 1.
<TTRCD>-MINIM = 1.
<TTRCD>-MAXIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TTRCD-MINTR, sy-vline,
  WA_TTRCD-DIMIN, sy-vline,
  WA_TTRCD-BUKRB, sy-vline,
  WA_TTRCD-KONTB, sy-vline,
  WA_TTRCD-KONTV, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_TTRCD 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_TTRCD 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_TTRCD INTO WA_TTRCD.


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

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

*Conversion exit ALPHA, internal->external for field KONTV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TTRCD-KONTV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TTRCD-KONTV.
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_TTRCD_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
KONTO TYPE STRING,
MINIM TYPE STRING,
MAXIM TYPE STRING,
MINTR TYPE STRING,
DIMIN TYPE STRING,
BUKRB TYPE STRING,
KONTB TYPE STRING,
KONTV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TTRCD_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_TTRCD_STR-MANDT sy-vline 
WA_TTRCD_STR-BUKRS sy-vline 
WA_TTRCD_STR-KONTO sy-vline 
WA_TTRCD_STR-MINIM sy-vline 
WA_TTRCD_STR-MAXIM sy-vline 
WA_TTRCD_STR-MINTR sy-vline 
WA_TTRCD_STR-DIMIN sy-vline 
WA_TTRCD_STR-BUKRB sy-vline 
WA_TTRCD_STR-KONTB sy-vline 
WA_TTRCD_STR-KONTV sy-vline      INTO ld_text SEPARATED BY SPACE.

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