ABAP Select data from SAP table TBZ1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TBZ1 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 TBZ1. 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 TBZ1 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_TBZ1 TYPE STANDARD TABLE OF TBZ1,
      WA_TBZ1 TYPE TBZ1,
      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: <TBZ1> TYPE TBZ1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TBZ1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TBZ1
  INTO TABLE IT_TBZ1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TBZ1
*  INTO TABLE @DATA(IT_TBZ12).
*--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_TBZ1 INDEX 1 INTO DATA(WA_TBZ12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TBZ1 ASSIGNING <TBZ1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TBZ1>-CLIENT = 1.
<TBZ1>-OBJAP = 1.
<TBZ1>-XSCSL = 1.
<TBZ1>-XSTRP = 1.
<TBZ1>-XRLTP = 1.

ENDLOOP.

LOOP AT IT_TBZ1 INTO WA_TBZ1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TBZ1-XRLTG, sy-vline,
  WA_TBZ1-RLTTB, sy-vline,
  WA_TBZ1-RLTFL, sy-vline,
  WA_TBZ1-RTGTB, sy-vline,
  WA_TBZ1-RTGFL, sy-vline,
  WA_TBZ1-XRLT0, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TBZ1 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_TBZ1 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_TBZ1 INTO WA_TBZ1.


*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_TBZ1_STR, 
CLIENT TYPE STRING,
OBJAP TYPE STRING,
XSCSL TYPE STRING,
XSTRP TYPE STRING,
XRLTP TYPE STRING,
XRLTG TYPE STRING,
RLTTB TYPE STRING,
RLTFL TYPE STRING,
RTGTB TYPE STRING,
RTGFL TYPE STRING,
XRLT0 TYPE STRING,
XRLT1 TYPE STRING,
XRLTN TYPE STRING,
TABNM1 TYPE STRING,
FLDNM1 TYPE STRING,
TABNM2 TYPE STRING,
FLDNM2 TYPE STRING,
TABNM3 TYPE STRING,
FLDNM3 TYPE STRING,
AUTHKND TYPE STRING,
AUTHKNDF TYPE STRING,
MSGID1 TYPE STRING,
MSGNO1 TYPE STRING,
MSGID2 TYPE STRING,
MSGNO2 TYPE STRING,
MSGID3 TYPE STRING,
MSGNO3 TYPE STRING,
AUTHFDG TYPE STRING,
AUTHFDGF TYPE STRING,
FNMC1 TYPE STRING,
FNMC2 TYPE STRING,
DITOTAL TYPE STRING,
DIHEADR TYPE STRING,
TBUSED TYPE STRING,
FNINFO TYPE STRING,
ARCOBJ TYPE STRING,
ARCFCAT TYPE STRING,
CL_IF_CLEAR TYPE STRING,
DCTXTOBJ TYPE STRING,
XDCFLAG TYPE STRING,
BOR_OBJTYP TYPE STRING,
STAT_OBJTYP TYPE STRING,
XRECOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TBZ1_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_TBZ1_STR-CLIENT sy-vline 
WA_TBZ1_STR-OBJAP sy-vline 
WA_TBZ1_STR-XSCSL sy-vline 
WA_TBZ1_STR-XSTRP sy-vline 
WA_TBZ1_STR-XRLTP sy-vline 
WA_TBZ1_STR-XRLTG sy-vline 
WA_TBZ1_STR-RLTTB sy-vline 
WA_TBZ1_STR-RLTFL sy-vline 
WA_TBZ1_STR-RTGTB sy-vline 
WA_TBZ1_STR-RTGFL sy-vline 
WA_TBZ1_STR-XRLT0 sy-vline 
WA_TBZ1_STR-XRLT1 sy-vline 
WA_TBZ1_STR-XRLTN sy-vline 
WA_TBZ1_STR-TABNM1 sy-vline 
WA_TBZ1_STR-FLDNM1 sy-vline 
WA_TBZ1_STR-TABNM2 sy-vline 
WA_TBZ1_STR-FLDNM2 sy-vline 
WA_TBZ1_STR-TABNM3 sy-vline 
WA_TBZ1_STR-FLDNM3 sy-vline 
WA_TBZ1_STR-AUTHKND sy-vline 
WA_TBZ1_STR-AUTHKNDF sy-vline 
WA_TBZ1_STR-MSGID1 sy-vline 
WA_TBZ1_STR-MSGNO1 sy-vline 
WA_TBZ1_STR-MSGID2 sy-vline 
WA_TBZ1_STR-MSGNO2 sy-vline 
WA_TBZ1_STR-MSGID3 sy-vline 
WA_TBZ1_STR-MSGNO3 sy-vline 
WA_TBZ1_STR-AUTHFDG sy-vline 
WA_TBZ1_STR-AUTHFDGF sy-vline 
WA_TBZ1_STR-FNMC1 sy-vline 
WA_TBZ1_STR-FNMC2 sy-vline 
WA_TBZ1_STR-DITOTAL sy-vline 
WA_TBZ1_STR-DIHEADR sy-vline 
WA_TBZ1_STR-TBUSED sy-vline 
WA_TBZ1_STR-FNINFO sy-vline 
WA_TBZ1_STR-ARCOBJ sy-vline 
WA_TBZ1_STR-ARCFCAT sy-vline 
WA_TBZ1_STR-CL_IF_CLEAR sy-vline 
WA_TBZ1_STR-DCTXTOBJ sy-vline 
WA_TBZ1_STR-XDCFLAG sy-vline 
WA_TBZ1_STR-BOR_OBJTYP sy-vline 
WA_TBZ1_STR-STAT_OBJTYP sy-vline 
WA_TBZ1_STR-XRECOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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