ABAP Select data from SAP table PYC_OC_REQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PYC_OC_REQ
*  INTO TABLE @DATA(IT_PYC_OC_REQ2).
*--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_PYC_OC_REQ INDEX 1 INTO DATA(WA_PYC_OC_REQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PYC_OC_REQ>-PERNR = 1.
<PYC_OC_REQ>-PROCESS_INSTANCE_ID = 1.
<PYC_OC_REQ>-PACKAGE_ID = 1.
<PYC_OC_REQ>-ALT_PERNR = 1.
<PYC_OC_REQ>-EMPLOYEE_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PYC_OC_REQ-EMPLOYEE_NAME_AND_ID, sy-vline,
  WA_PYC_OC_REQ-SEARCH_STRING, sy-vline,
  WA_PYC_OC_REQ-LAST_CHANGE_DATE_TIME, sy-vline,
  WA_PYC_OC_REQ-LAST_CHANGE_USER_ID, sy-vline,
  WA_PYC_OC_REQ-LAST_CHANGE_USER_NAME, sy-vline,
  WA_PYC_OC_REQ-REASON_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PYC_OC_REQ 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_PYC_OC_REQ 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_PYC_OC_REQ INTO WA_PYC_OC_REQ.


*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 GJAHR, internal->external for field PAYROLL_PERIOD_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PYC_OC_REQ-PAYROLL_PERIOD_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYC_OC_REQ-PAYROLL_PERIOD_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CKINP, internal->external for field PROCESS_ID
CALL FUNCTION 'CONVERSION_EXIT_CKINP_OUTPUT'
  EXPORTING
    input =                      WA_PYC_OC_REQ-PROCESS_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYC_OC_REQ-PROCESS_ID.
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_PYC_OC_REQ_STR, 
PERNR TYPE STRING,
PROCESS_INSTANCE_ID TYPE STRING,
PACKAGE_ID TYPE STRING,
ALT_PERNR TYPE STRING,
EMPLOYEE_NAME TYPE STRING,
EMPLOYEE_NAME_AND_ID TYPE STRING,
SEARCH_STRING TYPE STRING,
LAST_CHANGE_DATE_TIME TYPE STRING,
LAST_CHANGE_USER_ID TYPE STRING,
LAST_CHANGE_USER_NAME TYPE STRING,
REASON_ID TYPE STRING,
REASON_TEXT TYPE STRING,
REASON_CATEGORY_ID TYPE STRING,
REASON_CATEGORY_TEXT TYPE STRING,
REASON_TYPE_ID TYPE STRING,
REASON_TYPE_TEXT TYPE STRING,
REASON_PAY_TYPE_ID TYPE STRING,
REASON_PAY_TYPE_TEXT TYPE STRING,
PAY_DATE TYPE STRING,
PAY_ID TYPE STRING,
PAYROLL_PERIOD_ABKRS TYPE STRING,
PAYROLL_PERIOD_YEAR TYPE STRING,
PAYROLL_PERIOD TYPE STRING,
PROCESS_ID TYPE STRING,
PROCESS_TEXT TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
MOLGA TYPE STRING,
ABKRS TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
ABKRS_TEXT TYPE STRING,
BUKRS_TEXT TYPE STRING,
WERKS_TEXT TYPE STRING,
BTRTL_TEXT TYPE STRING,
MOLGA_TEXT TYPE STRING,
NET_PAY_AMOUNT TYPE STRING,
NET_PAY_AMOUNT_CURRENCY TYPE STRING,
GROSS_PAY_AMOUNT TYPE STRING,
GROSS_PAY_AMOUNT_CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PYC_OC_REQ_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_PYC_OC_REQ_STR-PERNR sy-vline 
WA_PYC_OC_REQ_STR-PROCESS_INSTANCE_ID sy-vline 
WA_PYC_OC_REQ_STR-PACKAGE_ID sy-vline 
WA_PYC_OC_REQ_STR-ALT_PERNR sy-vline 
WA_PYC_OC_REQ_STR-EMPLOYEE_NAME sy-vline 
WA_PYC_OC_REQ_STR-EMPLOYEE_NAME_AND_ID sy-vline 
WA_PYC_OC_REQ_STR-SEARCH_STRING sy-vline 
WA_PYC_OC_REQ_STR-LAST_CHANGE_DATE_TIME sy-vline 
WA_PYC_OC_REQ_STR-LAST_CHANGE_USER_ID sy-vline 
WA_PYC_OC_REQ_STR-LAST_CHANGE_USER_NAME sy-vline 
WA_PYC_OC_REQ_STR-REASON_ID sy-vline 
WA_PYC_OC_REQ_STR-REASON_TEXT sy-vline 
WA_PYC_OC_REQ_STR-REASON_CATEGORY_ID sy-vline 
WA_PYC_OC_REQ_STR-REASON_CATEGORY_TEXT sy-vline 
WA_PYC_OC_REQ_STR-REASON_TYPE_ID sy-vline 
WA_PYC_OC_REQ_STR-REASON_TYPE_TEXT sy-vline 
WA_PYC_OC_REQ_STR-REASON_PAY_TYPE_ID sy-vline 
WA_PYC_OC_REQ_STR-REASON_PAY_TYPE_TEXT sy-vline 
WA_PYC_OC_REQ_STR-PAY_DATE sy-vline 
WA_PYC_OC_REQ_STR-PAY_ID sy-vline 
WA_PYC_OC_REQ_STR-PAYROLL_PERIOD_ABKRS sy-vline 
WA_PYC_OC_REQ_STR-PAYROLL_PERIOD_YEAR sy-vline 
WA_PYC_OC_REQ_STR-PAYROLL_PERIOD sy-vline 
WA_PYC_OC_REQ_STR-PROCESS_ID sy-vline 
WA_PYC_OC_REQ_STR-PROCESS_TEXT sy-vline 
WA_PYC_OC_REQ_STR-STATUS sy-vline 
WA_PYC_OC_REQ_STR-STATUS_TEXT sy-vline 
WA_PYC_OC_REQ_STR-MOLGA sy-vline 
WA_PYC_OC_REQ_STR-ABKRS sy-vline 
WA_PYC_OC_REQ_STR-BUKRS sy-vline 
WA_PYC_OC_REQ_STR-WERKS sy-vline 
WA_PYC_OC_REQ_STR-BTRTL sy-vline 
WA_PYC_OC_REQ_STR-ABKRS_TEXT sy-vline 
WA_PYC_OC_REQ_STR-BUKRS_TEXT sy-vline 
WA_PYC_OC_REQ_STR-WERKS_TEXT sy-vline 
WA_PYC_OC_REQ_STR-BTRTL_TEXT sy-vline 
WA_PYC_OC_REQ_STR-MOLGA_TEXT sy-vline 
WA_PYC_OC_REQ_STR-NET_PAY_AMOUNT sy-vline 
WA_PYC_OC_REQ_STR-NET_PAY_AMOUNT_CURRENCY sy-vline 
WA_PYC_OC_REQ_STR-GROSS_PAY_AMOUNT sy-vline 
WA_PYC_OC_REQ_STR-GROSS_PAY_AMOUNT_CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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