ABAP Select data from SAP table TJHAZART2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TJHAZART2 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 TJHAZART2. 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 TJHAZART2 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_TJHAZART2 TYPE STANDARD TABLE OF TJHAZART2,
      WA_TJHAZART2 TYPE TJHAZART2,
      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: <TJHAZART2> TYPE TJHAZART2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TJHAZART2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TJHAZART2
  INTO TABLE IT_TJHAZART2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TJHAZART2
*  INTO TABLE @DATA(IT_TJHAZART22).
*--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_TJHAZART2 INDEX 1 INTO DATA(WA_TJHAZART22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TJHAZART2 ASSIGNING <TJHAZART2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TJHAZART2>-MANDT = 1.
<TJHAZART2>-BELEINH = 1.
<TJHAZART2>-INHALTSKOM = 1.
<TJHAZART2>-AZART_GEST = 1.
<TJHAZART2>-AZART_FARB = 1.

ENDLOOP.

LOOP AT IT_TJHAZART2 INTO WA_TJHAZART2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TJHAZART2-AZART_FORM, sy-vline,
  WA_TJHAZART2-AZART_PLAZ, sy-vline,
  WA_TJHAZART2-AZART_SOND, sy-vline,
  WA_TJHAZART2-BREITE_SEH, sy-vline,
  WA_TJHAZART2-HOEHE_SEH, sy-vline,
  WA_TJHAZART2-AZART_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TJHAZART2 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_TJHAZART2 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_TJHAZART2 INTO WA_TJHAZART2.


*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 BELEINH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-BELEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-BELEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INHALTSKOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-INHALTSKOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-INHALTSKOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AZART_GEST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-AZART_GEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-AZART_GEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AZART_FARB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-AZART_FARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-AZART_FARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AZART_FORM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-AZART_FORM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-AZART_FORM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BREITE_SEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-BREITE_SEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-BREITE_SEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field HOEHE_SEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-HOEHE_SEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-HOEHE_SEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AZART_AREA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAZART2-AZART_AREA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAZART2-AZART_AREA.
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_TJHAZART2_STR, 
MANDT TYPE STRING,
BELEINH TYPE STRING,
INHALTSKOM TYPE STRING,
AZART_GEST TYPE STRING,
AZART_FARB TYPE STRING,
AZART_FORM TYPE STRING,
AZART_PLAZ TYPE STRING,
AZART_SOND TYPE STRING,
BREITE_SEH TYPE STRING,
HOEHE_SEH TYPE STRING,
AZART_AREA TYPE STRING,
VT_SIGN TYPE STRING,
MIN_BREITE TYPE STRING,
MIN_HOEHE TYPE STRING,
MAX_BREITE TYPE STRING,
MAX_HOEHE TYPE STRING,
REAK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TJHAZART2_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_TJHAZART2_STR-MANDT sy-vline 
WA_TJHAZART2_STR-BELEINH sy-vline 
WA_TJHAZART2_STR-INHALTSKOM sy-vline 
WA_TJHAZART2_STR-AZART_GEST sy-vline 
WA_TJHAZART2_STR-AZART_FARB sy-vline 
WA_TJHAZART2_STR-AZART_FORM sy-vline 
WA_TJHAZART2_STR-AZART_PLAZ sy-vline 
WA_TJHAZART2_STR-AZART_SOND sy-vline 
WA_TJHAZART2_STR-BREITE_SEH sy-vline 
WA_TJHAZART2_STR-HOEHE_SEH sy-vline 
WA_TJHAZART2_STR-AZART_AREA sy-vline 
WA_TJHAZART2_STR-VT_SIGN sy-vline 
WA_TJHAZART2_STR-MIN_BREITE sy-vline 
WA_TJHAZART2_STR-MIN_HOEHE sy-vline 
WA_TJHAZART2_STR-MAX_BREITE sy-vline 
WA_TJHAZART2_STR-MAX_HOEHE sy-vline 
WA_TJHAZART2_STR-REAK sy-vline      INTO ld_text SEPARATED BY SPACE.

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