ABAP Select data from SAP table CPERSWKAGRMTTAG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPERSWKAGRMTTAG
*  INTO TABLE @DATA(IT_CPERSWKAGRMTTAG2).
*--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_CPERSWKAGRMTTAG INDEX 1 INTO DATA(WA_CPERSWKAGRMTTAG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPERSWKAGRMTTAG>-MANDT = 1.
<CPERSWKAGRMTTAG>-PERSONNELNUMBER = 1.
<CPERSWKAGRMTTAG>-EMPLOYEESKILLTAGID = 1.
<CPERSWKAGRMTTAG>-EMPLOYEESKILLTAGTYPE = 1.
<CPERSWKAGRMTTAG>-EMPLOYEESKILLTAGNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPERSWKAGRMTTAG-SYSTEMOFRECORDID, sy-vline,
  WA_CPERSWKAGRMTTAG-LASTCHANGEDATE, sy-vline,
  WA_CPERSWKAGRMTTAG-LASTCHANGEDBYUSER, sy-vline,
  WA_CPERSWKAGRMTTAG-LASTCHANGEDBYUSERFULLNAME, sy-vline,
  WA_CPERSWKAGRMTTAG-PERSONWORKAGREEMENT, sy-vline,
  WA_CPERSWKAGRMTTAG-PERSON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPERSWKAGRMTTAG 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_CPERSWKAGRMTTAG 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_CPERSWKAGRMTTAG INTO WA_CPERSWKAGRMTTAG.


*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_CPERSWKAGRMTTAG_STR, 
MANDT TYPE STRING,
PERSONNELNUMBER TYPE STRING,
EMPLOYEESKILLTAGID TYPE STRING,
EMPLOYEESKILLTAGTYPE TYPE STRING,
EMPLOYEESKILLTAGNAME TYPE STRING,
SYSTEMOFRECORDID TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDBYUSERFULLNAME TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
PERSON TYPE STRING,
PERSONEXTERNALID TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPERSWKAGRMTTAG_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_CPERSWKAGRMTTAG_STR-MANDT sy-vline 
WA_CPERSWKAGRMTTAG_STR-PERSONNELNUMBER sy-vline 
WA_CPERSWKAGRMTTAG_STR-EMPLOYEESKILLTAGID sy-vline 
WA_CPERSWKAGRMTTAG_STR-EMPLOYEESKILLTAGTYPE sy-vline 
WA_CPERSWKAGRMTTAG_STR-EMPLOYEESKILLTAGNAME sy-vline 
WA_CPERSWKAGRMTTAG_STR-SYSTEMOFRECORDID sy-vline 
WA_CPERSWKAGRMTTAG_STR-LASTCHANGEDATE sy-vline 
WA_CPERSWKAGRMTTAG_STR-LASTCHANGEDBYUSER sy-vline 
WA_CPERSWKAGRMTTAG_STR-LASTCHANGEDBYUSERFULLNAME sy-vline 
WA_CPERSWKAGRMTTAG_STR-PERSONWORKAGREEMENT sy-vline 
WA_CPERSWKAGRMTTAG_STR-PERSON sy-vline 
WA_CPERSWKAGRMTTAG_STR-PERSONEXTERNALID sy-vline 
WA_CPERSWKAGRMTTAG_STR-AUTHORIZATIONGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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