ABAP Select data from SAP table T77ED into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77ED 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 T77ED. 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 T77ED 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_T77ED TYPE STANDARD TABLE OF T77ED,
      WA_T77ED TYPE T77ED,
      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: <T77ED> TYPE T77ED.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77ED.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77ED
  INTO TABLE IT_T77ED.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77ED
*  INTO TABLE @DATA(IT_T77ED2).
*--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_T77ED INDEX 1 INTO DATA(WA_T77ED2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77ED ASSIGNING <T77ED>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77ED>-MANDT = 1.
<T77ED>-DIENSTGR = 1.
<T77ED>-DIENSTE = 1.
<T77ED>-MOTPR = 1.
<T77ED>-TPROG = 1.

ENDLOOP.

LOOP AT IT_T77ED INTO WA_T77ED.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77ED-VARIA, sy-vline,
  WA_T77ED-TEILDIENST, sy-vline,
  WA_T77ED-DIENST_VON, sy-vline,
  WA_T77ED-DIENST_BIS, sy-vline,
  WA_T77ED-PAUSE, sy-vline,
  WA_T77ED-VON_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77ED 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_T77ED 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_T77ED INTO WA_T77ED.


*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_T77ED_STR, 
MANDT TYPE STRING,
DIENSTGR TYPE STRING,
DIENSTE TYPE STRING,
MOTPR TYPE STRING,
TPROG TYPE STRING,
VARIA TYPE STRING,
TEILDIENST TYPE STRING,
DIENST_VON TYPE STRING,
DIENST_BIS TYPE STRING,
PAUSE TYPE STRING,
VON_TEXT TYPE STRING,
BIS_TEXT TYPE STRING,
PAUSE_TEXT TYPE STRING,
MOABW TYPE STRING,
AWART TYPE STRING,
AWTYP TYPE STRING,
MOVER TYPE STRING,
STNBY TYPE STRING,
TEILD1 TYPE STRING,
TEILD2 TYPE STRING,
TEILD3 TYPE STRING,
TEILD4 TYPE STRING,
COLOR TYPE STRING,
INTENSIFIED TYPE STRING,
INVERSE TYPE STRING,
BOLD TYPE STRING,
ITALIC TYPE STRING,
UNDERLINED TYPE STRING,
SEQNR TYPE STRING,
NO_OVERLAP_CHECK TYPE STRING,
SHIFT_GROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77ED_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_T77ED_STR-MANDT sy-vline 
WA_T77ED_STR-DIENSTGR sy-vline 
WA_T77ED_STR-DIENSTE sy-vline 
WA_T77ED_STR-MOTPR sy-vline 
WA_T77ED_STR-TPROG sy-vline 
WA_T77ED_STR-VARIA sy-vline 
WA_T77ED_STR-TEILDIENST sy-vline 
WA_T77ED_STR-DIENST_VON sy-vline 
WA_T77ED_STR-DIENST_BIS sy-vline 
WA_T77ED_STR-PAUSE sy-vline 
WA_T77ED_STR-VON_TEXT sy-vline 
WA_T77ED_STR-BIS_TEXT sy-vline 
WA_T77ED_STR-PAUSE_TEXT sy-vline 
WA_T77ED_STR-MOABW sy-vline 
WA_T77ED_STR-AWART sy-vline 
WA_T77ED_STR-AWTYP sy-vline 
WA_T77ED_STR-MOVER sy-vline 
WA_T77ED_STR-STNBY sy-vline 
WA_T77ED_STR-TEILD1 sy-vline 
WA_T77ED_STR-TEILD2 sy-vline 
WA_T77ED_STR-TEILD3 sy-vline 
WA_T77ED_STR-TEILD4 sy-vline 
WA_T77ED_STR-COLOR sy-vline 
WA_T77ED_STR-INTENSIFIED sy-vline 
WA_T77ED_STR-INVERSE sy-vline 
WA_T77ED_STR-BOLD sy-vline 
WA_T77ED_STR-ITALIC sy-vline 
WA_T77ED_STR-UNDERLINED sy-vline 
WA_T77ED_STR-SEQNR sy-vline 
WA_T77ED_STR-NO_OVERLAP_CHECK sy-vline 
WA_T77ED_STR-SHIFT_GROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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