ABAP Select data from SAP table WB2_V_CC_FLOW_T into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_V_CC_FLOW_T 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 WB2_V_CC_FLOW_T. 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 WB2_V_CC_FLOW_T 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_WB2_V_CC_FLOW_T TYPE STANDARD TABLE OF WB2_V_CC_FLOW_T,
      WA_WB2_V_CC_FLOW_T TYPE WB2_V_CC_FLOW_T,
      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: <WB2_V_CC_FLOW_T> TYPE WB2_V_CC_FLOW_T.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_V_CC_FLOW_T.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_V_CC_FLOW_T
  INTO TABLE IT_WB2_V_CC_FLOW_T.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_V_CC_FLOW_T
*  INTO TABLE @DATA(IT_WB2_V_CC_FLOW_T2).
*--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_WB2_V_CC_FLOW_T INDEX 1 INTO DATA(WA_WB2_V_CC_FLOW_T2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_V_CC_FLOW_T ASSIGNING <WB2_V_CC_FLOW_T>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_V_CC_FLOW_T>-MANDT = 1.
<WB2_V_CC_FLOW_T>-RUUID = 1.
<WB2_V_CC_FLOW_T>-KNUMV = 1.
<WB2_V_CC_FLOW_T>-KPOSN = 1.
<WB2_V_CC_FLOW_T>-STUNR = 1.

ENDLOOP.

LOOP AT IT_WB2_V_CC_FLOW_T INTO WA_WB2_V_CC_FLOW_T.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_V_CC_FLOW_T-ZAEHK, sy-vline,
  WA_WB2_V_CC_FLOW_T-NUM, sy-vline,
  WA_WB2_V_CC_FLOW_T-GUID, sy-vline,
  WA_WB2_V_CC_FLOW_T-DOC_TYPE_TO, sy-vline,
  WA_WB2_V_CC_FLOW_T-DOCNR_TO, sy-vline,
  WA_WB2_V_CC_FLOW_T-DOC_YEAR_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_V_CC_FLOW_T 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_WB2_V_CC_FLOW_T 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_WB2_V_CC_FLOW_T INTO WA_WB2_V_CC_FLOW_T.


*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.

*Conversion exit ALPHA, internal->external for field NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_V_CC_FLOW_T-NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_V_CC_FLOW_T-NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DOC_YEAR_TO
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WB2_V_CC_FLOW_T-DOC_YEAR_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_V_CC_FLOW_T-DOC_YEAR_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WB2_V_CC_FLOW_T-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_V_CC_FLOW_T-GJAHR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WB2_V_CC_FLOW_T_STR, 
MANDT TYPE STRING,
RUUID TYPE STRING,
KNUMV TYPE STRING,
KPOSN TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
NUM TYPE STRING,
GUID TYPE STRING,
DOC_TYPE_TO TYPE STRING,
DOCNR_TO TYPE STRING,
DOC_YEAR_TO TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
LOGICAL_DELETED TYPE STRING,
FLOW_TYPE TYPE STRING,
KWERT TYPE STRING,
WAERS TYPE STRING,
KWERT_HWAERS TYPE STRING,
HWAERS TYPE STRING,
BUDAT TYPE STRING,
ACCR_REV_STATUS TYPE STRING,
SETTL_DATE TYPE STRING,
SETTL_DATE_SEQ_ID TYPE STRING,
REF_SETTL_DATE TYPE STRING,
REF_SETTL_DATE_SEQ_ID TYPE STRING,
GJAHR TYPE STRING,
WERKS TYPE STRING,
BUKRS TYPE STRING,
KPOSN4_TECH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_V_CC_FLOW_T_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_WB2_V_CC_FLOW_T_STR-MANDT sy-vline 
WA_WB2_V_CC_FLOW_T_STR-RUUID sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KNUMV sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KPOSN sy-vline 
WA_WB2_V_CC_FLOW_T_STR-STUNR sy-vline 
WA_WB2_V_CC_FLOW_T_STR-ZAEHK sy-vline 
WA_WB2_V_CC_FLOW_T_STR-NUM sy-vline 
WA_WB2_V_CC_FLOW_T_STR-GUID sy-vline 
WA_WB2_V_CC_FLOW_T_STR-DOC_TYPE_TO sy-vline 
WA_WB2_V_CC_FLOW_T_STR-DOCNR_TO sy-vline 
WA_WB2_V_CC_FLOW_T_STR-DOC_YEAR_TO sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KNUMH sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KOPOS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KAPPL sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KSCHL sy-vline 
WA_WB2_V_CC_FLOW_T_STR-LOGICAL_DELETED sy-vline 
WA_WB2_V_CC_FLOW_T_STR-FLOW_TYPE sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KWERT sy-vline 
WA_WB2_V_CC_FLOW_T_STR-WAERS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KWERT_HWAERS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-HWAERS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-BUDAT sy-vline 
WA_WB2_V_CC_FLOW_T_STR-ACCR_REV_STATUS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-SETTL_DATE sy-vline 
WA_WB2_V_CC_FLOW_T_STR-SETTL_DATE_SEQ_ID sy-vline 
WA_WB2_V_CC_FLOW_T_STR-REF_SETTL_DATE sy-vline 
WA_WB2_V_CC_FLOW_T_STR-REF_SETTL_DATE_SEQ_ID sy-vline 
WA_WB2_V_CC_FLOW_T_STR-GJAHR sy-vline 
WA_WB2_V_CC_FLOW_T_STR-WERKS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-BUKRS sy-vline 
WA_WB2_V_CC_FLOW_T_STR-KPOSN4_TECH sy-vline      INTO ld_text SEPARATED BY SPACE.

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