ABAP Select data from SAP table T77WWW_TEAFL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77WWW_TEAFL 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_TEAFL. 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_TEAFL 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_TEAFL TYPE STANDARD TABLE OF T77WWW_TEAFL,
      WA_T77WWW_TEAFL TYPE T77WWW_TEAFL,
      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_TEAFL> TYPE T77WWW_TEAFL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77WWW_TEAFL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77WWW_TEAFL
  INTO TABLE IT_T77WWW_TEAFL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77WWW_TEAFL
*  INTO TABLE @DATA(IT_T77WWW_TEAFL2).
*--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_TEAFL INDEX 1 INTO DATA(WA_T77WWW_TEAFL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77WWW_TEAFL ASSIGNING <T77WWW_TEAFL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77WWW_TEAFL>-MANDT = 1.
<T77WWW_TEAFL>-EARQN = 1.
<T77WWW_TEAFL>-EASQN = 1.
<T77WWW_TEAFL>-EAIBR = 1.
<T77WWW_TEAFL>-EAIBU = 1.

ENDLOOP.

LOOP AT IT_T77WWW_TEAFL INTO WA_T77WWW_TEAFL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77WWW_TEAFL-EAIOD, sy-vline,
  WA_T77WWW_TEAFL-EAIOT, sy-vline,
  WA_T77WWW_TEAFL-EAFTP, sy-vline,
  WA_T77WWW_TEAFL-EAFSE, sy-vline,
  WA_T77WWW_TEAFL-EAFNM, sy-vline,
  WA_T77WWW_TEAFL-EAFDE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77WWW_TEAFL 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_TEAFL 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_TEAFL INTO WA_T77WWW_TEAFL.


*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_TEAFL_STR, 
MANDT TYPE STRING,
EARQN TYPE STRING,
EASQN TYPE STRING,
EAIBR TYPE STRING,
EAIBU TYPE STRING,
EAIOD TYPE STRING,
EAIOT TYPE STRING,
EAFTP TYPE STRING,
EAFSE TYPE STRING,
EAFNM TYPE STRING,
EAFDE TYPE STRING,
EAFEX TYPE STRING,
EAFSZ TYPE STRING,
EAIRO TYPE STRING,
EAVTA TYPE STRING,
EASGS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77WWW_TEAFL_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_TEAFL_STR-MANDT sy-vline 
WA_T77WWW_TEAFL_STR-EARQN sy-vline 
WA_T77WWW_TEAFL_STR-EASQN sy-vline 
WA_T77WWW_TEAFL_STR-EAIBR sy-vline 
WA_T77WWW_TEAFL_STR-EAIBU sy-vline 
WA_T77WWW_TEAFL_STR-EAIOD sy-vline 
WA_T77WWW_TEAFL_STR-EAIOT sy-vline 
WA_T77WWW_TEAFL_STR-EAFTP sy-vline 
WA_T77WWW_TEAFL_STR-EAFSE sy-vline 
WA_T77WWW_TEAFL_STR-EAFNM sy-vline 
WA_T77WWW_TEAFL_STR-EAFDE sy-vline 
WA_T77WWW_TEAFL_STR-EAFEX sy-vline 
WA_T77WWW_TEAFL_STR-EAFSZ sy-vline 
WA_T77WWW_TEAFL_STR-EAIRO sy-vline 
WA_T77WWW_TEAFL_STR-EAVTA sy-vline 
WA_T77WWW_TEAFL_STR-EASGS sy-vline      INTO ld_text SEPARATED BY SPACE.

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