ABAP Select data from SAP table /SAPQUERY/TA02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPQUERY/TA02 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 /SAPQUERY/TA02. 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 /SAPQUERY/TA02 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_/SAPQUERY/TA02 TYPE STANDARD TABLE OF /SAPQUERY/TA02,
      WA_/SAPQUERY/TA02 TYPE /SAPQUERY/TA02,
      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: </SAPQUERY/TA02> TYPE /SAPQUERY/TA02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPQUERY/TA02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPQUERY/TA02
  INTO TABLE IT_/SAPQUERY/TA02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPQUERY/TA02
*  INTO TABLE @DATA(IT_/SAPQUERY/TA022).
*--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_/SAPQUERY/TA02 INDEX 1 INTO DATA(WA_/SAPQUERY/TA022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPQUERY/TA02 ASSIGNING </SAPQUERY/TA02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPQUERY/TA02>-MANDT = 1.
</SAPQUERY/TA02>-ID = 1.
</SAPQUERY/TA02>-NAME = 1.
</SAPQUERY/TA02>-FORM = 1.
</SAPQUERY/TA02>-STREET = 1.

ENDLOOP.

LOOP AT IT_/SAPQUERY/TA02 INTO WA_/SAPQUERY/TA02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPQUERY/TA02-POSTBOX, sy-vline,
  WA_/SAPQUERY/TA02-POSTCODE, sy-vline,
  WA_/SAPQUERY/TA02-CITY, sy-vline,
  WA_/SAPQUERY/TA02-COUNTRY, sy-vline,
  WA_/SAPQUERY/TA02-REGION, sy-vline,
  WA_/SAPQUERY/TA02-TELEPHONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPQUERY/TA02 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_/SAPQUERY/TA02 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_/SAPQUERY/TA02 INTO WA_/SAPQUERY/TA02.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPQUERY/TA02-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPQUERY/TA02-LANGU.
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_/SAPQUERY/TA02_STR, 
MANDT TYPE STRING,
ID TYPE STRING,
NAME TYPE STRING,
FORM TYPE STRING,
STREET TYPE STRING,
POSTBOX TYPE STRING,
POSTCODE TYPE STRING,
CITY TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
TELEPHONE TYPE STRING,
CUSTTYPE TYPE STRING,
DISCOUNT TYPE STRING,
LANGU TYPE STRING,
EMAIL TYPE STRING,
WEBUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPQUERY/TA02_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_/SAPQUERY/TA02_STR-MANDT sy-vline 
WA_/SAPQUERY/TA02_STR-ID sy-vline 
WA_/SAPQUERY/TA02_STR-NAME sy-vline 
WA_/SAPQUERY/TA02_STR-FORM sy-vline 
WA_/SAPQUERY/TA02_STR-STREET sy-vline 
WA_/SAPQUERY/TA02_STR-POSTBOX sy-vline 
WA_/SAPQUERY/TA02_STR-POSTCODE sy-vline 
WA_/SAPQUERY/TA02_STR-CITY sy-vline 
WA_/SAPQUERY/TA02_STR-COUNTRY sy-vline 
WA_/SAPQUERY/TA02_STR-REGION sy-vline 
WA_/SAPQUERY/TA02_STR-TELEPHONE sy-vline 
WA_/SAPQUERY/TA02_STR-CUSTTYPE sy-vline 
WA_/SAPQUERY/TA02_STR-DISCOUNT sy-vline 
WA_/SAPQUERY/TA02_STR-LANGU sy-vline 
WA_/SAPQUERY/TA02_STR-EMAIL sy-vline 
WA_/SAPQUERY/TA02_STR-WEBUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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