ABAP Select data from SAP table PSEN_CLG_WPERIOD_CTEXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSEN_CLG_WPERIOD_CTEXT
*  INTO TABLE @DATA(IT_PSEN_CLG_WPERIOD_CTEXT2).
*--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_PSEN_CLG_WPERIOD_CTEXT INDEX 1 INTO DATA(WA_PSEN_CLG_WPERIOD_CTEXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSEN_CLG_WPERIOD_CTEXT>-BEGDA = 1.
<PSEN_CLG_WPERIOD_CTEXT>-ENDDA = 1.
<PSEN_CLG_WPERIOD_CTEXT>-NUMER = 1.
<PSEN_CLG_WPERIOD_CTEXT>-DENOM = 1.
<PSEN_CLG_WPERIOD_CTEXT>-NUMERWPT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSEN_CLG_WPERIOD_CTEXT-DENOMWPT, sy-vline,
  WA_PSEN_CLG_WPERIOD_CTEXT-CALYYPKD, sy-vline,
  WA_PSEN_CLG_WPERIOD_CTEXT-CALMMPKD, sy-vline,
  WA_PSEN_CLG_WPERIOD_CTEXT-CALDDPKD, sy-vline,
  WA_PSEN_CLG_WPERIOD_CTEXT-CALYYCLG, sy-vline,
  WA_PSEN_CLG_WPERIOD_CTEXT-CALMMCLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSEN_CLG_WPERIOD_CTEXT 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_PSEN_CLG_WPERIOD_CTEXT 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_PSEN_CLG_WPERIOD_CTEXT INTO WA_PSEN_CLG_WPERIOD_CTEXT.


*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_PSEN_CLG_WPERIOD_CTEXT_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
NUMER TYPE STRING,
DENOM TYPE STRING,
NUMERWPT TYPE STRING,
DENOMWPT TYPE STRING,
CALYYPKD TYPE STRING,
CALMMPKD TYPE STRING,
CALDDPKD TYPE STRING,
CALYYCLG TYPE STRING,
CALMMCLG TYPE STRING,
CALDDCLG TYPE STRING,
GRAD_CLG TYPE STRING,
COMP_NOT TYPE STRING,
WEIGHT TYPE STRING,
NUMER TYPE STRING,
DENOM TYPE STRING,
WPERIOD TYPE STRING,
WPEAK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSEN_CLG_WPERIOD_CTEXT_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_PSEN_CLG_WPERIOD_CTEXT_STR-BEGDA sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-ENDDA sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-NUMER sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-DENOM sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-NUMERWPT sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-DENOMWPT sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALYYPKD sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALMMPKD sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALDDPKD sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALYYCLG sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALMMCLG sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-CALDDCLG sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-GRAD_CLG sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-COMP_NOT sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-WEIGHT sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-NUMER sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-DENOM sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-WPERIOD sy-vline 
WA_PSEN_CLG_WPERIOD_CTEXT_STR-WPEAK sy-vline      INTO ld_text SEPARATED BY SPACE.

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