ABAP Select data from SAP table T77WWW_TEAAP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77WWW_TEAAP 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 T77WWW_TEAAP. 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 T77WWW_TEAAP 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_T77WWW_TEAAP TYPE STANDARD TABLE OF T77WWW_TEAAP,
      WA_T77WWW_TEAAP TYPE T77WWW_TEAAP,
      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: <T77WWW_TEAAP> TYPE T77WWW_TEAAP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77WWW_TEAAP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77WWW_TEAAP
  INTO TABLE IT_T77WWW_TEAAP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77WWW_TEAAP
*  INTO TABLE @DATA(IT_T77WWW_TEAAP2).
*--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_T77WWW_TEAAP INDEX 1 INTO DATA(WA_T77WWW_TEAAP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77WWW_TEAAP ASSIGNING <T77WWW_TEAAP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77WWW_TEAAP>-MANDT = 1.
<T77WWW_TEAAP>-EARQN = 1.
<T77WWW_TEAAP>-EASQN = 1.
<T77WWW_TEAAP>-EAIBR = 1.
<T77WWW_TEAAP>-EAIBU = 1.

ENDLOOP.

LOOP AT IT_T77WWW_TEAAP INTO WA_T77WWW_TEAAP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77WWW_TEAAP-EAIOD, sy-vline,
  WA_T77WWW_TEAAP-EAIOT, sy-vline,
  WA_T77WWW_TEAAP-EALBU, sy-vline,
  WA_T77WWW_TEAAP-EALOD, sy-vline,
  WA_T77WWW_TEAAP-EALOT, sy-vline,
  WA_T77WWW_TEAAP-EAISQ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77WWW_TEAAP 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_T77WWW_TEAAP 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_T77WWW_TEAAP INTO WA_T77WWW_TEAAP.


*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_T77WWW_TEAAP_STR, 
MANDT TYPE STRING,
EARQN TYPE STRING,
EASQN TYPE STRING,
EAIBR TYPE STRING,
EAIBU TYPE STRING,
EAIOD TYPE STRING,
EAIOT TYPE STRING,
EALBU TYPE STRING,
EALOD TYPE STRING,
EALOT TYPE STRING,
EAISQ TYPE STRING,
EAIST TYPE STRING,
EAROL TYPE STRING,
EAALV TYPE STRING,
EAPHS TYPE STRING,
EAAID TYPE STRING,
EAAGR TYPE STRING,
EAFST TYPE STRING,
EAOSQ TYPE STRING,
EAWID TYPE STRING,
EAAFN TYPE STRING,
EAFRZ TYPE STRING,
EAWFC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77WWW_TEAAP_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_T77WWW_TEAAP_STR-MANDT sy-vline 
WA_T77WWW_TEAAP_STR-EARQN sy-vline 
WA_T77WWW_TEAAP_STR-EASQN sy-vline 
WA_T77WWW_TEAAP_STR-EAIBR sy-vline 
WA_T77WWW_TEAAP_STR-EAIBU sy-vline 
WA_T77WWW_TEAAP_STR-EAIOD sy-vline 
WA_T77WWW_TEAAP_STR-EAIOT sy-vline 
WA_T77WWW_TEAAP_STR-EALBU sy-vline 
WA_T77WWW_TEAAP_STR-EALOD sy-vline 
WA_T77WWW_TEAAP_STR-EALOT sy-vline 
WA_T77WWW_TEAAP_STR-EAISQ sy-vline 
WA_T77WWW_TEAAP_STR-EAIST sy-vline 
WA_T77WWW_TEAAP_STR-EAROL sy-vline 
WA_T77WWW_TEAAP_STR-EAALV sy-vline 
WA_T77WWW_TEAAP_STR-EAPHS sy-vline 
WA_T77WWW_TEAAP_STR-EAAID sy-vline 
WA_T77WWW_TEAAP_STR-EAAGR sy-vline 
WA_T77WWW_TEAAP_STR-EAFST sy-vline 
WA_T77WWW_TEAAP_STR-EAOSQ sy-vline 
WA_T77WWW_TEAAP_STR-EAWID sy-vline 
WA_T77WWW_TEAAP_STR-EAAFN sy-vline 
WA_T77WWW_TEAAP_STR-EAFRZ sy-vline 
WA_T77WWW_TEAAP_STR-EAWFC sy-vline      INTO ld_text SEPARATED BY SPACE.

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