ABAP Select data from SAP table TXI_T156SC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXI_T156SC 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 TXI_T156SC. 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 TXI_T156SC 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_TXI_T156SC TYPE STANDARD TABLE OF TXI_T156SC,
      WA_TXI_T156SC TYPE TXI_T156SC,
      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: <TXI_T156SC> TYPE TXI_T156SC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TXI_T156SC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TXI_T156SC
  INTO TABLE IT_TXI_T156SC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXI_T156SC
*  INTO TABLE @DATA(IT_TXI_T156SC2).
*--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_TXI_T156SC INDEX 1 INTO DATA(WA_TXI_T156SC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TXI_T156SC ASSIGNING <TXI_T156SC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXI_T156SC>-MANDT = 1.
<TXI_T156SC>-BWART = 1.
<TXI_T156SC>-WERTU = 1.
<TXI_T156SC>-MENGU = 1.
<TXI_T156SC>-SOBKZ = 1.

ENDLOOP.

LOOP AT IT_TXI_T156SC INTO WA_TXI_T156SC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXI_T156SC-KZBEW, sy-vline,
  WA_TXI_T156SC-KZZUG, sy-vline,
  WA_TXI_T156SC-KZVBR, sy-vline,
  WA_TXI_T156SC-RBLVS, sy-vline,
  WA_TXI_T156SC-ANZRE, sy-vline,
  WA_TXI_T156SC-UMRBL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXI_T156SC 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_TXI_T156SC 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_TXI_T156SC INTO WA_TXI_T156SC.


*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_TXI_T156SC_STR, 
MANDT TYPE STRING,
BWART TYPE STRING,
WERTU TYPE STRING,
MENGU TYPE STRING,
SOBKZ TYPE STRING,
KZBEW TYPE STRING,
KZZUG TYPE STRING,
KZVBR TYPE STRING,
RBLVS TYPE STRING,
ANZRE TYPE STRING,
UMRBL TYPE STRING,
UMRBU TYPE STRING,
XLIFO TYPE STRING,
XVERF TYPE STRING,
KZVBP TYPE STRING,
PRREG TYPE STRING,
OICONIND TYPE STRING,
OITRANSF TYPE STRING,
OIASTBW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXI_T156SC_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_TXI_T156SC_STR-MANDT sy-vline 
WA_TXI_T156SC_STR-BWART sy-vline 
WA_TXI_T156SC_STR-WERTU sy-vline 
WA_TXI_T156SC_STR-MENGU sy-vline 
WA_TXI_T156SC_STR-SOBKZ sy-vline 
WA_TXI_T156SC_STR-KZBEW sy-vline 
WA_TXI_T156SC_STR-KZZUG sy-vline 
WA_TXI_T156SC_STR-KZVBR sy-vline 
WA_TXI_T156SC_STR-RBLVS sy-vline 
WA_TXI_T156SC_STR-ANZRE sy-vline 
WA_TXI_T156SC_STR-UMRBL sy-vline 
WA_TXI_T156SC_STR-UMRBU sy-vline 
WA_TXI_T156SC_STR-XLIFO sy-vline 
WA_TXI_T156SC_STR-XVERF sy-vline 
WA_TXI_T156SC_STR-KZVBP sy-vline 
WA_TXI_T156SC_STR-PRREG sy-vline 
WA_TXI_T156SC_STR-OICONIND sy-vline 
WA_TXI_T156SC_STR-OITRANSF sy-vline 
WA_TXI_T156SC_STR-OIASTBW sy-vline      INTO ld_text SEPARATED BY SPACE.

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