ABAP Select data from SAP table T77WWW_CLOFPYDC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77WWW_CLOFPYDC 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_CLOFPYDC. 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_CLOFPYDC 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_CLOFPYDC TYPE STANDARD TABLE OF T77WWW_CLOFPYDC,
      WA_T77WWW_CLOFPYDC TYPE T77WWW_CLOFPYDC,
      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_CLOFPYDC> TYPE T77WWW_CLOFPYDC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77WWW_CLOFPYDC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77WWW_CLOFPYDC
  INTO TABLE IT_T77WWW_CLOFPYDC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77WWW_CLOFPYDC
*  INTO TABLE @DATA(IT_T77WWW_CLOFPYDC2).
*--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_CLOFPYDC INDEX 1 INTO DATA(WA_T77WWW_CLOFPYDC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77WWW_CLOFPYDC ASSIGNING <T77WWW_CLOFPYDC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77WWW_CLOFPYDC>-MANDT = 1.
<T77WWW_CLOFPYDC>-MOLGA = 1.
<T77WWW_CLOFPYDC>-RETYP = 1.
<T77WWW_CLOFPYDC>-RQTYP = 1.
<T77WWW_CLOFPYDC>-SCMCD = 1.

ENDLOOP.

LOOP AT IT_T77WWW_CLOFPYDC INTO WA_T77WWW_CLOFPYDC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77WWW_CLOFPYDC-ENDDA, sy-vline,
  WA_T77WWW_CLOFPYDC-BEGDA, sy-vline,
  WA_T77WWW_CLOFPYDC-PNHOL, sy-vline,
  WA_T77WWW_CLOFPYDC-OPFRQ, sy-vline,
  WA_T77WWW_CLOFPYDC-D_WED, sy-vline,
  WA_T77WWW_CLOFPYDC-W_MON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77WWW_CLOFPYDC 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_CLOFPYDC 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_CLOFPYDC INTO WA_T77WWW_CLOFPYDC.


*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_CLOFPYDC_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
RETYP TYPE STRING,
RQTYP TYPE STRING,
SCMCD TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
PNHOL TYPE STRING,
OPFRQ TYPE STRING,
D_WED TYPE STRING,
W_MON TYPE STRING,
W_TUE TYPE STRING,
W_WED TYPE STRING,
W_THU TYPE STRING,
W_FRI TYPE STRING,
W_SAT TYPE STRING,
W_SUN TYPE STRING,
M_01ST TYPE STRING,
M_02ND TYPE STRING,
M_03RD TYPE STRING,
M_04TH TYPE STRING,
M_05TH TYPE STRING,
M_06TH TYPE STRING,
M_07TH TYPE STRING,
M_08TH TYPE STRING,
M_09TH TYPE STRING,
M_10TH TYPE STRING,
M_11TH TYPE STRING,
M_12TH TYPE STRING,
M_13TH TYPE STRING,
M_14TH TYPE STRING,
M_15TH TYPE STRING,
M_16TH TYPE STRING,
M_17TH TYPE STRING,
M_18TH TYPE STRING,
M_19TH TYPE STRING,
M_20TH TYPE STRING,
M_21ST TYPE STRING,
M_22ND TYPE STRING,
M_23TH TYPE STRING,
M_24TH TYPE STRING,
M_25TH TYPE STRING,
M_26TH TYPE STRING,
M_27TH TYPE STRING,
M_28TH TYPE STRING,
M_29TH TYPE STRING,
M_30TH TYPE STRING,
M_31ST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77WWW_CLOFPYDC_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_CLOFPYDC_STR-MANDT sy-vline 
WA_T77WWW_CLOFPYDC_STR-MOLGA sy-vline 
WA_T77WWW_CLOFPYDC_STR-RETYP sy-vline 
WA_T77WWW_CLOFPYDC_STR-RQTYP sy-vline 
WA_T77WWW_CLOFPYDC_STR-SCMCD sy-vline 
WA_T77WWW_CLOFPYDC_STR-ENDDA sy-vline 
WA_T77WWW_CLOFPYDC_STR-BEGDA sy-vline 
WA_T77WWW_CLOFPYDC_STR-PNHOL sy-vline 
WA_T77WWW_CLOFPYDC_STR-OPFRQ sy-vline 
WA_T77WWW_CLOFPYDC_STR-D_WED sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_MON sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_TUE sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_WED sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_THU sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_FRI sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_SAT sy-vline 
WA_T77WWW_CLOFPYDC_STR-W_SUN sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_01ST sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_02ND sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_03RD sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_04TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_05TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_06TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_07TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_08TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_09TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_10TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_11TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_12TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_13TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_14TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_15TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_16TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_17TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_18TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_19TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_20TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_21ST sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_22ND sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_23TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_24TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_25TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_26TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_27TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_28TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_29TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_30TH sy-vline 
WA_T77WWW_CLOFPYDC_STR-M_31ST sy-vline      INTO ld_text SEPARATED BY SPACE.

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