ABAP Select data from SAP table PS3216 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PS3216 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 PS3216. 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 PS3216 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_PS3216 TYPE STANDARD TABLE OF PS3216,
      WA_PS3216 TYPE PS3216,
      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: <PS3216> TYPE PS3216.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PS3216.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PS3216
  INTO TABLE IT_PS3216.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PS3216
*  INTO TABLE @DATA(IT_PS32162).
*--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_PS3216 INDEX 1 INTO DATA(WA_PS32162).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PS3216 ASSIGNING <PS3216>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PS3216>-CONTY = 1.
<PS3216>-POST = 1.
<PS3216>-DOAIS = 1.
<PS3216>-DESTN = 1.
<PS3216>-ORIGN = 1.

ENDLOOP.

LOOP AT IT_PS3216 INTO WA_PS3216.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PS3216-ROLE1, sy-vline,
  WA_PS3216-AHRS1, sy-vline,
  WA_PS3216-FHRS1, sy-vline,
  WA_PS3216-WKPA1, sy-vline,
  WA_PS3216-ROLE2, sy-vline,
  WA_PS3216-AHRS2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PS3216 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_PS3216 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_PS3216 INTO WA_PS3216.


*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_PS3216_STR, 
CONTY TYPE STRING,
POST TYPE STRING,
DOAIS TYPE STRING,
DESTN TYPE STRING,
ORIGN TYPE STRING,
ROLE1 TYPE STRING,
AHRS1 TYPE STRING,
FHRS1 TYPE STRING,
WKPA1 TYPE STRING,
ROLE2 TYPE STRING,
AHRS2 TYPE STRING,
FHRS2 TYPE STRING,
WKPA2 TYPE STRING,
ROLE3 TYPE STRING,
AHRS3 TYPE STRING,
FHRS3 TYPE STRING,
WKPA3 TYPE STRING,
ROLE4 TYPE STRING,
AHRS4 TYPE STRING,
FHRS4 TYPE STRING,
WKPA4 TYPE STRING,
ROLE5 TYPE STRING,
AHRS5 TYPE STRING,
FHRS5 TYPE STRING,
WKPA5 TYPE STRING,
CTBEG TYPE STRING,
CTEND TYPE STRING,
PRDAT TYPE STRING,
PAYFR TYPE STRING,
RSN4LV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PS3216_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_PS3216_STR-CONTY sy-vline 
WA_PS3216_STR-POST sy-vline 
WA_PS3216_STR-DOAIS sy-vline 
WA_PS3216_STR-DESTN sy-vline 
WA_PS3216_STR-ORIGN sy-vline 
WA_PS3216_STR-ROLE1 sy-vline 
WA_PS3216_STR-AHRS1 sy-vline 
WA_PS3216_STR-FHRS1 sy-vline 
WA_PS3216_STR-WKPA1 sy-vline 
WA_PS3216_STR-ROLE2 sy-vline 
WA_PS3216_STR-AHRS2 sy-vline 
WA_PS3216_STR-FHRS2 sy-vline 
WA_PS3216_STR-WKPA2 sy-vline 
WA_PS3216_STR-ROLE3 sy-vline 
WA_PS3216_STR-AHRS3 sy-vline 
WA_PS3216_STR-FHRS3 sy-vline 
WA_PS3216_STR-WKPA3 sy-vline 
WA_PS3216_STR-ROLE4 sy-vline 
WA_PS3216_STR-AHRS4 sy-vline 
WA_PS3216_STR-FHRS4 sy-vline 
WA_PS3216_STR-WKPA4 sy-vline 
WA_PS3216_STR-ROLE5 sy-vline 
WA_PS3216_STR-AHRS5 sy-vline 
WA_PS3216_STR-FHRS5 sy-vline 
WA_PS3216_STR-WKPA5 sy-vline 
WA_PS3216_STR-CTBEG sy-vline 
WA_PS3216_STR-CTEND sy-vline 
WA_PS3216_STR-PRDAT sy-vline 
WA_PS3216_STR-PAYFR sy-vline 
WA_PS3216_STR-RSN4LV sy-vline      INTO ld_text SEPARATED BY SPACE.

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