ABAP Select data from SAP table SSPIPVC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SSPIPVC
*  INTO TABLE @DATA(IT_SSPIPVC2).
*--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_SSPIPVC INDEX 1 INTO DATA(WA_SSPIPVC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SSPIPVC>-CLIENT = 1.
<SSPIPVC>-PROCTYPE = 1.
<SSPIPVC>-PROCVAR = 1.
<SSPIPVC>-SIGNATURE = 1.
<SSPIPVC>-FLDNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SSPIPVC-CNDCNT, sy-vline,
  WA_SSPIPVC-MONLEVEL, sy-vline,
  WA_SSPIPVC-SIGN, sy-vline,
  WA_SSPIPVC-OPT, sy-vline,
  WA_SSPIPVC-LOW, sy-vline,
  WA_SSPIPVC-HIGH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SSPIPVC 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_SSPIPVC 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_SSPIPVC INTO WA_SSPIPVC.


*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_SSPIPVC_STR, 
CLIENT TYPE STRING,
PROCTYPE TYPE STRING,
PROCVAR TYPE STRING,
SIGNATURE TYPE STRING,
FLDNAME TYPE STRING,
CNDCNT TYPE STRING,
MONLEVEL TYPE STRING,
SIGN TYPE STRING,
OPT TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SSPIPVC_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_SSPIPVC_STR-CLIENT sy-vline 
WA_SSPIPVC_STR-PROCTYPE sy-vline 
WA_SSPIPVC_STR-PROCVAR sy-vline 
WA_SSPIPVC_STR-SIGNATURE sy-vline 
WA_SSPIPVC_STR-FLDNAME sy-vline 
WA_SSPIPVC_STR-CNDCNT sy-vline 
WA_SSPIPVC_STR-MONLEVEL sy-vline 
WA_SSPIPVC_STR-SIGN sy-vline 
WA_SSPIPVC_STR-OPT sy-vline 
WA_SSPIPVC_STR-LOW sy-vline 
WA_SSPIPVC_STR-HIGH sy-vline      INTO ld_text SEPARATED BY SPACE.

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