ABAP Select data from SAP table T811CT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T811CT 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 T811CT. 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 T811CT 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_T811CT TYPE STANDARD TABLE OF T811CT,
      WA_T811CT TYPE T811CT,
      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: <T811CT> TYPE T811CT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T811CT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T811CT
  INTO TABLE IT_T811CT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T811CT
*  INTO TABLE @DATA(IT_T811CT2).
*--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_T811CT INDEX 1 INTO DATA(WA_T811CT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T811CT ASSIGNING <T811CT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T811CT>-MANDT = 1.
<T811CT>-TAB = 1.
<T811CT>-CYCLE = 1.
<T811CT>-SDATE = 1.
<T811CT>-EDATE = 1.

ENDLOOP.

LOOP AT IT_T811CT INTO WA_T811CT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T811CT-LASTEXEC, sy-vline,
  WA_T811CT-LEXECBY, sy-vline,
  WA_T811CT-TIMEEXEC, sy-vline,
  WA_T811CT-ITERFLAG, sy-vline,
  WA_T811CT-NEGTEST, sy-vline,
  WA_T811CT-ALART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T811CT 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_T811CT 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_T811CT INTO WA_T811CT.


*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_T811CT_STR, 
MANDT TYPE STRING,
TAB TYPE STRING,
CYCLE TYPE STRING,
SDATE TYPE STRING,
EDATE TYPE STRING,
LASTEXEC TYPE STRING,
LEXECBY TYPE STRING,
TIMEEXEC TYPE STRING,
ITERFLAG TYPE STRING,
NEGTEST TYPE STRING,
ALART TYPE STRING,
IPKNZ TYPE STRING,
KUMUFLAG TYPE STRING,
TXT TYPE STRING,
XXKUMUFLAG TYPE STRING,
RCKUMUFLAG TYPE STRING,
PROC_GROUP TYPE STRING,
TPRICE_ACTIVE TYPE STRING,
SUBSTID TYPE STRING,
RKE_SPLIT TYPE STRING,
FM_DERIVE TYPE STRING,
GL_XBILK TYPE STRING,
FM_DERIVE_FONDS TYPE STRING,
FM_DERIVE_FKBER TYPE STRING,
FM_DERIVE_GRANT TYPE STRING,
FM_DERIVE_BUDPD TYPE STRING,
GL_LDGRP TYPE STRING,
PERIOD_LAG TYPE STRING,
PERIOD_DELTA TYPE STRING,
KALC_PRODPER TYPE STRING,
VARIABEL TYPE STRING,
VALUTYP_ALLOC TYPE STRING,
NO_SRC_CE TYPE STRING,
CAN_EXEC_FOR_OTHER_LEDGER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T811CT_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_T811CT_STR-MANDT sy-vline 
WA_T811CT_STR-TAB sy-vline 
WA_T811CT_STR-CYCLE sy-vline 
WA_T811CT_STR-SDATE sy-vline 
WA_T811CT_STR-EDATE sy-vline 
WA_T811CT_STR-LASTEXEC sy-vline 
WA_T811CT_STR-LEXECBY sy-vline 
WA_T811CT_STR-TIMEEXEC sy-vline 
WA_T811CT_STR-ITERFLAG sy-vline 
WA_T811CT_STR-NEGTEST sy-vline 
WA_T811CT_STR-ALART sy-vline 
WA_T811CT_STR-IPKNZ sy-vline 
WA_T811CT_STR-KUMUFLAG sy-vline 
WA_T811CT_STR-TXT sy-vline 
WA_T811CT_STR-XXKUMUFLAG sy-vline 
WA_T811CT_STR-RCKUMUFLAG sy-vline 
WA_T811CT_STR-PROC_GROUP sy-vline 
WA_T811CT_STR-TPRICE_ACTIVE sy-vline 
WA_T811CT_STR-SUBSTID sy-vline 
WA_T811CT_STR-RKE_SPLIT sy-vline 
WA_T811CT_STR-FM_DERIVE sy-vline 
WA_T811CT_STR-GL_XBILK sy-vline 
WA_T811CT_STR-FM_DERIVE_FONDS sy-vline 
WA_T811CT_STR-FM_DERIVE_FKBER sy-vline 
WA_T811CT_STR-FM_DERIVE_GRANT sy-vline 
WA_T811CT_STR-FM_DERIVE_BUDPD sy-vline 
WA_T811CT_STR-GL_LDGRP sy-vline 
WA_T811CT_STR-PERIOD_LAG sy-vline 
WA_T811CT_STR-PERIOD_DELTA sy-vline 
WA_T811CT_STR-KALC_PRODPER sy-vline 
WA_T811CT_STR-VARIABEL sy-vline 
WA_T811CT_STR-VALUTYP_ALLOC sy-vline 
WA_T811CT_STR-NO_SRC_CE sy-vline 
WA_T811CT_STR-CAN_EXEC_FOR_OTHER_LEDGER sy-vline      INTO ld_text SEPARATED BY SPACE.

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