ABAP Select data from SAP table PS3386 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3386 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 PS3386. 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 PS3386 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_PS3386 TYPE STANDARD TABLE OF PS3386,
      WA_PS3386 TYPE PS3386,
      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: <PS3386> TYPE PS3386.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3386.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3386
  INTO TABLE IT_PS3386.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3386
*  INTO TABLE @DATA(IT_PS33862).
*--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_PS3386 INDEX 1 INTO DATA(WA_PS33862).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3386 ASSIGNING <PS3386>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3386>-PSTYP = 1.
<PS3386>-INDNR = 1.
<PS3386>-HRCFM = 1.
<PS3386>-IDCFM = 1.
<PS3386>-EVINO = 1.

ENDLOOP.

LOOP AT IT_PS3386 INTO WA_PS3386.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3386-EVIID, sy-vline,
  WA_PS3386-CPNMF, sy-vline,
  WA_PS3386-PROXY, sy-vline,
  WA_PS3386-CFMNM, sy-vline,
  WA_PS3386-CFMDT, sy-vline,
  WA_PS3386-CFMTM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3386 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_PS3386 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_PS3386 INTO WA_PS3386.


*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 INDNR, internal->external for field INDNR
CALL FUNCTION 'CONVERSION_EXIT_INDNR_OUTPUT'
  EXPORTING
    input =                      WA_PS3386-INDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PS3386-INDNR.
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_PS3386_STR, 
PSTYP TYPE STRING,
INDNR TYPE STRING,
HRCFM TYPE STRING,
IDCFM TYPE STRING,
EVINO TYPE STRING,
EVIID TYPE STRING,
CPNMF TYPE STRING,
PROXY TYPE STRING,
CFMNM TYPE STRING,
CFMDT TYPE STRING,
CFMTM TYPE STRING,
CFINM TYPE STRING,
CFIDT TYPE STRING,
CFITM TYPE STRING,
USGES TYPE STRING,
DPSEQ TYPE STRING,
CASBT TYPE STRING,
CAOBJ TYPE STRING,
CASEQ TYPE STRING,
INSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3386_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_PS3386_STR-PSTYP sy-vline 
WA_PS3386_STR-INDNR sy-vline 
WA_PS3386_STR-HRCFM sy-vline 
WA_PS3386_STR-IDCFM sy-vline 
WA_PS3386_STR-EVINO sy-vline 
WA_PS3386_STR-EVIID sy-vline 
WA_PS3386_STR-CPNMF sy-vline 
WA_PS3386_STR-PROXY sy-vline 
WA_PS3386_STR-CFMNM sy-vline 
WA_PS3386_STR-CFMDT sy-vline 
WA_PS3386_STR-CFMTM sy-vline 
WA_PS3386_STR-CFINM sy-vline 
WA_PS3386_STR-CFIDT sy-vline 
WA_PS3386_STR-CFITM sy-vline 
WA_PS3386_STR-USGES sy-vline 
WA_PS3386_STR-DPSEQ sy-vline 
WA_PS3386_STR-CASBT sy-vline 
WA_PS3386_STR-CAOBJ sy-vline 
WA_PS3386_STR-CASEQ sy-vline 
WA_PS3386_STR-INSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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