ABAP Select data from SAP table APS_CCV_C_JOIN_V into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APS_CCV_C_JOIN_V
*  INTO TABLE @DATA(IT_APS_CCV_C_JOIN_V2).
*--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_APS_CCV_C_JOIN_V INDEX 1 INTO DATA(WA_APS_CCV_C_JOIN_V2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APS_CCV_C_JOIN_V>-MANDT = 1.
<APS_CCV_C_JOIN_V>-ENTITYNAME = 1.
<APS_CCV_C_JOIN_V>-DATASOURCEUUID = 1.
<APS_CCV_C_JOIN_V>-JOINCONDITIONUUID = 1.
<APS_CCV_C_JOIN_V>-COUNTER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APS_CCV_C_JOIN_V-DATASOURCEFIELD, sy-vline,
  WA_APS_CCV_C_JOIN_V-FIELDDATASOURCENAME, sy-vline,
  WA_APS_CCV_C_JOIN_V-OPERATOR, sy-vline,
  WA_APS_CCV_C_JOIN_V-FIELDVALUETYPE, sy-vline,
  WA_APS_CCV_C_JOIN_V-FIELDVALUECONSTANT, sy-vline,
  WA_APS_CCV_C_JOIN_V-FIELDVALUEPATH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APS_CCV_C_JOIN_V 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_APS_CCV_C_JOIN_V 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_APS_CCV_C_JOIN_V INTO WA_APS_CCV_C_JOIN_V.


*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_APS_CCV_C_JOIN_V_STR, 
MANDT TYPE STRING,
ENTITYNAME TYPE STRING,
DATASOURCEUUID TYPE STRING,
JOINCONDITIONUUID TYPE STRING,
COUNTER TYPE STRING,
DATASOURCEFIELD TYPE STRING,
FIELDDATASOURCENAME TYPE STRING,
OPERATOR TYPE STRING,
FIELDVALUETYPE TYPE STRING,
FIELDVALUECONSTANT TYPE STRING,
FIELDVALUEPATH TYPE STRING,
FIELDVALUEPATHDATASOURCEUUID TYPE STRING,
FIELDVALUEPATHDISPLAY TYPE STRING,
FIELDVALUEDATASOURCEALIAS TYPE STRING,
DATATYPE TYPE STRING,
FIELDVALUEPARAMETERUUID TYPE STRING,
FIELDVALUEPARAMETERNAME TYPE STRING,
FIELDVALUESESSIONVARIABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APS_CCV_C_JOIN_V_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_APS_CCV_C_JOIN_V_STR-MANDT sy-vline 
WA_APS_CCV_C_JOIN_V_STR-ENTITYNAME sy-vline 
WA_APS_CCV_C_JOIN_V_STR-DATASOURCEUUID sy-vline 
WA_APS_CCV_C_JOIN_V_STR-JOINCONDITIONUUID sy-vline 
WA_APS_CCV_C_JOIN_V_STR-COUNTER sy-vline 
WA_APS_CCV_C_JOIN_V_STR-DATASOURCEFIELD sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDDATASOURCENAME sy-vline 
WA_APS_CCV_C_JOIN_V_STR-OPERATOR sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUETYPE sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUECONSTANT sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEPATH sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEPATHDATASOURCEUUID sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEPATHDISPLAY sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEDATASOURCEALIAS sy-vline 
WA_APS_CCV_C_JOIN_V_STR-DATATYPE sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEPARAMETERUUID sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUEPARAMETERNAME sy-vline 
WA_APS_CCV_C_JOIN_V_STR-FIELDVALUESESSIONVARIABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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