ABAP Select data from SAP table T682ZA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T682ZA 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 T682ZA. 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 T682ZA 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_T682ZA TYPE STANDARD TABLE OF T682ZA,
      WA_T682ZA TYPE T682ZA,
      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: <T682ZA> TYPE T682ZA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T682ZA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T682ZA
  INTO TABLE IT_T682ZA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T682ZA
*  INTO TABLE @DATA(IT_T682ZA2).
*--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_T682ZA INDEX 1 INTO DATA(WA_T682ZA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T682ZA ASSIGNING <T682ZA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T682ZA>-KVEWE = 1.
<T682ZA>-KAPPL = 1.
<T682ZA>-KOZGF = 1.
<T682ZA>-KOLNR = 1.
<T682ZA>-ZAEHK = 1.

ENDLOOP.

LOOP AT IT_T682ZA INTO WA_T682ZA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T682ZA-ZIFNA, sy-vline,
  WA_T682ZA-QUSTR, sy-vline,
  WA_T682ZA-QUFNA, sy-vline,
  WA_T682ZA-QUDIW, sy-vline,
  WA_T682ZA-KZINI, sy-vline,
  WA_T682ZA-FSTST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T682ZA 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_T682ZA 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_T682ZA INTO WA_T682ZA.


*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_T682ZA_STR, 
KVEWE TYPE STRING,
KAPPL TYPE STRING,
KOZGF TYPE STRING,
KOLNR TYPE STRING,
ZAEHK TYPE STRING,
ZIFNA TYPE STRING,
QUSTR TYPE STRING,
QUFNA TYPE STRING,
QUDIW TYPE STRING,
KZINI TYPE STRING,
FSTST TYPE STRING,
MBWRT TYPE STRING,
DIRECTION_HIER_EVAL TYPE STRING,
DIST_LEAF_TO_NODE_IN_HLVLS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T682ZA_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_T682ZA_STR-KVEWE sy-vline 
WA_T682ZA_STR-KAPPL sy-vline 
WA_T682ZA_STR-KOZGF sy-vline 
WA_T682ZA_STR-KOLNR sy-vline 
WA_T682ZA_STR-ZAEHK sy-vline 
WA_T682ZA_STR-ZIFNA sy-vline 
WA_T682ZA_STR-QUSTR sy-vline 
WA_T682ZA_STR-QUFNA sy-vline 
WA_T682ZA_STR-QUDIW sy-vline 
WA_T682ZA_STR-KZINI sy-vline 
WA_T682ZA_STR-FSTST sy-vline 
WA_T682ZA_STR-MBWRT sy-vline 
WA_T682ZA_STR-DIRECTION_HIER_EVAL sy-vline 
WA_T682ZA_STR-DIST_LEAF_TO_NODE_IN_HLVLS sy-vline      INTO ld_text SEPARATED BY SPACE.

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