ABAP Select data from SAP table CRFPOSSTRUCTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRFPOSSTRUCTP
*  INTO TABLE @DATA(IT_CRFPOSSTRUCTP2).
*--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_CRFPOSSTRUCTP INDEX 1 INTO DATA(WA_CRFPOSSTRUCTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRFPOSSTRUCTP>-MANDT = 1.
<CRFPOSSTRUCTP>-DFSOBJECTID = 1.
<CRFPOSSTRUCTP>-DFSPOSITIONID = 1.
<CRFPOSSTRUCTP>-DFSOBJECTPLNGSTATUS = 1.
<CRFPOSSTRUCTP>-DFSPOSITIONVALDTYSTARTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRFPOSSTRUCTP-DFSPOSITIONVALDTYENDDATE, sy-vline,
  WA_CRFPOSSTRUCTP-DFSOBJECTTYPE, sy-vline,
  WA_CRFPOSSTRUCTP-DFSOBJECTPLANVERSION, sy-vline,
  WA_CRFPOSSTRUCTP-DFSOBJECTRELSHPSPEC, sy-vline,
  WA_CRFPOSSTRUCTP-DFSOBJECTRELSHPBTWNOBJ, sy-vline,
  WA_CRFPOSSTRUCTP-DFSOBJECTRELSHPPRIORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRFPOSSTRUCTP 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_CRFPOSSTRUCTP 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_CRFPOSSTRUCTP INTO WA_CRFPOSSTRUCTP.


*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_CRFPOSSTRUCTP_STR, 
MANDT TYPE STRING,
DFSOBJECTID TYPE STRING,
DFSPOSITIONID TYPE STRING,
DFSOBJECTPLNGSTATUS TYPE STRING,
DFSPOSITIONVALDTYSTARTDATE TYPE STRING,
DFSPOSITIONVALDTYENDDATE TYPE STRING,
DFSOBJECTTYPE TYPE STRING,
DFSOBJECTPLANVERSION TYPE STRING,
DFSOBJECTRELSHPSPEC TYPE STRING,
DFSOBJECTRELSHPBTWNOBJ TYPE STRING,
DFSOBJECTRELSHPPRIORITY TYPE STRING,
DFSPOSITIONDESCREFSQNCNMBR TYPE STRING,
DFSOBJECTINFOTYPE TYPE STRING,
DFSOBJECTCONCATENATEDID TYPE STRING,
DFSOBJECTSUBTYPE TYPE STRING,
DFSPOSITIONRELATEDOBJECTTYPE TYPE STRING,
DFSOBJRELSHPLASTCHGDBYUSERNAME TYPE STRING,
DFSOBJRELSHPLASTCHGDBYUSER TYPE STRING,
DFSOBJRELSHPLASTCHGDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRFPOSSTRUCTP_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_CRFPOSSTRUCTP_STR-MANDT sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTID sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSPOSITIONID sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTPLNGSTATUS sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSPOSITIONVALDTYSTARTDATE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSPOSITIONVALDTYENDDATE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTTYPE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTPLANVERSION sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTRELSHPSPEC sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTRELSHPBTWNOBJ sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTRELSHPPRIORITY sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSPOSITIONDESCREFSQNCNMBR sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTINFOTYPE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTCONCATENATEDID sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJECTSUBTYPE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSPOSITIONRELATEDOBJECTTYPE sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJRELSHPLASTCHGDBYUSERNAME sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJRELSHPLASTCHGDBYUSER sy-vline 
WA_CRFPOSSTRUCTP_STR-DFSOBJRELSHPLASTCHGDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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