ABAP Select data from SAP table T71CB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T71CB 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 T71CB. 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 T71CB 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_T71CB TYPE STANDARD TABLE OF T71CB,
      WA_T71CB TYPE T71CB,
      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: <T71CB> TYPE T71CB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T71CB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T71CB
  INTO TABLE IT_T71CB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T71CB
*  INTO TABLE @DATA(IT_T71CB2).
*--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_T71CB INDEX 1 INTO DATA(WA_T71CB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T71CB ASSIGNING <T71CB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T71CB>-MANDT = 1.
<T71CB>-CPLAN = 1.
<T71CB>-CAREA = 1.
<T71CB>-ENDDA = 1.
<T71CB>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_T71CB INTO WA_T71CB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T71CB-EFFPD, sy-vline,
  WA_T71CB-EFFIN, sy-vline,
  WA_T71CB-EFFMO, sy-vline,
  WA_T71CB-EFFDY, sy-vline,
  WA_T71CB-DTTYP, sy-vline,
  WA_T71CB-BSWGT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T71CB 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_T71CB 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_T71CB INTO WA_T71CB.


*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_T71CB_STR, 
MANDT TYPE STRING,
CPLAN TYPE STRING,
CAREA TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
EFFPD TYPE STRING,
EFFIN TYPE STRING,
EFFMO TYPE STRING,
EFFDY TYPE STRING,
DTTYP TYPE STRING,
BSWGT TYPE STRING,
BSMTH TYPE STRING,
BSDAY TYPE STRING,
BSPRD TYPE STRING,
LGMST TYPE STRING,
PPLAN TYPE STRING,
ELIGR TYPE STRING,
USRDF TYPE STRING,
BSPRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T71CB_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_T71CB_STR-MANDT sy-vline 
WA_T71CB_STR-CPLAN sy-vline 
WA_T71CB_STR-CAREA sy-vline 
WA_T71CB_STR-ENDDA sy-vline 
WA_T71CB_STR-BEGDA sy-vline 
WA_T71CB_STR-EFFPD sy-vline 
WA_T71CB_STR-EFFIN sy-vline 
WA_T71CB_STR-EFFMO sy-vline 
WA_T71CB_STR-EFFDY sy-vline 
WA_T71CB_STR-DTTYP sy-vline 
WA_T71CB_STR-BSWGT sy-vline 
WA_T71CB_STR-BSMTH sy-vline 
WA_T71CB_STR-BSDAY sy-vline 
WA_T71CB_STR-BSPRD sy-vline 
WA_T71CB_STR-LGMST sy-vline 
WA_T71CB_STR-PPLAN sy-vline 
WA_T71CB_STR-ELIGR sy-vline 
WA_T71CB_STR-USRDF sy-vline 
WA_T71CB_STR-BSPRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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