ABAP Select data from SAP table APS_CCVEIT_JC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP APS_CCVEIT_JC 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_CCVEIT_JC. 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_CCVEIT_JC 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_CCVEIT_JC TYPE STANDARD TABLE OF APS_CCVEIT_JC,
      WA_APS_CCVEIT_JC TYPE APS_CCVEIT_JC,
      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_CCVEIT_JC> TYPE APS_CCVEIT_JC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APS_CCVEIT_JC
*  INTO TABLE @DATA(IT_APS_CCVEIT_JC2).
*--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_CCVEIT_JC INDEX 1 INTO DATA(WA_APS_CCVEIT_JC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APS_CCVEIT_JC>-ENTITYNAME = 1.
<APS_CCVEIT_JC>-DATASOURCEALIAS = 1.
<APS_CCVEIT_JC>-COUNTER = 1.
<APS_CCVEIT_JC>-DATASOURCEFIELD = 1.
<APS_CCVEIT_JC>-OPERATOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APS_CCVEIT_JC-FIELDVALUETYPE, sy-vline,
  WA_APS_CCVEIT_JC-FIELDVALUECONSTANT, sy-vline,
  WA_APS_CCVEIT_JC-FIELDVALUEPATH, sy-vline,
  WA_APS_CCVEIT_JC-FIELDVALUEPATHDATASOUREALIAS, sy-vline,
  WA_APS_CCVEIT_JC-FIELDVALUEPARAMETERNAME, sy-vline,
  WA_APS_CCVEIT_JC-FIELDVALUESESSIONVARIABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APS_CCVEIT_JC 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_CCVEIT_JC 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_CCVEIT_JC INTO WA_APS_CCVEIT_JC.


*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_CCVEIT_JC_STR, 
ENTITYNAME TYPE STRING,
DATASOURCEALIAS TYPE STRING,
COUNTER TYPE STRING,
DATASOURCEFIELD TYPE STRING,
OPERATOR TYPE STRING,
FIELDVALUETYPE TYPE STRING,
FIELDVALUECONSTANT TYPE STRING,
FIELDVALUEPATH TYPE STRING,
FIELDVALUEPATHDATASOUREALIAS TYPE STRING,
FIELDVALUEPARAMETERNAME TYPE STRING,
FIELDVALUESESSIONVARIABLE TYPE STRING,
DATA_SOURCE_UUID TYPE STRING,
FIELD_VALUE_PATH_DS_UUID TYPE STRING,
FIELD_VALUE_PARAM_UUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APS_CCVEIT_JC_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_CCVEIT_JC_STR-ENTITYNAME sy-vline 
WA_APS_CCVEIT_JC_STR-DATASOURCEALIAS sy-vline 
WA_APS_CCVEIT_JC_STR-COUNTER sy-vline 
WA_APS_CCVEIT_JC_STR-DATASOURCEFIELD sy-vline 
WA_APS_CCVEIT_JC_STR-OPERATOR sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUETYPE sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUECONSTANT sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUEPATH sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUEPATHDATASOUREALIAS sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUEPARAMETERNAME sy-vline 
WA_APS_CCVEIT_JC_STR-FIELDVALUESESSIONVARIABLE sy-vline 
WA_APS_CCVEIT_JC_STR-DATA_SOURCE_UUID sy-vline 
WA_APS_CCVEIT_JC_STR-FIELD_VALUE_PATH_DS_UUID sy-vline 
WA_APS_CCVEIT_JC_STR-FIELD_VALUE_PARAM_UUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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