ABAP Select data from SAP table HRPOST_REQUISITION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPOST_REQUISITION
*  INTO TABLE @DATA(IT_HRPOST_REQUISITION2).
*--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_HRPOST_REQUISITION INDEX 1 INTO DATA(WA_HRPOST_REQUISITION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPOST_REQUISITION>-TITLE = 1.
<HRPOST_REQUISITION>-DEPARTMENT = 1.
<HRPOST_REQUISITION>-REQUISITION_ID = 1.
<HRPOST_REQUISITION>-RECRUITERID = 1.
<HRPOST_REQUISITION>-MANAGERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPOST_REQUISITION-LOCATION, sy-vline,
  WA_HRPOST_REQUISITION-POSITIONS, sy-vline,
  WA_HRPOST_REQUISITION-DESCRIPTIONID, sy-vline,
  WA_HRPOST_REQUISITION-JOBDESCRIPTION, sy-vline,
  WA_HRPOST_REQUISITION-REQTYPE, sy-vline,
  WA_HRPOST_REQUISITION-COLLEGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPOST_REQUISITION 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_HRPOST_REQUISITION 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_HRPOST_REQUISITION INTO WA_HRPOST_REQUISITION.


*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_HRPOST_REQUISITION_STR, 
TITLE TYPE STRING,
DEPARTMENT TYPE STRING,
REQUISITION_ID TYPE STRING,
RECRUITERID TYPE STRING,
MANAGERID TYPE STRING,
LOCATION TYPE STRING,
POSITIONS TYPE STRING,
DESCRIPTIONID TYPE STRING,
JOBDESCRIPTION TYPE STRING,
REQTYPE TYPE STRING,
COLLEGE TYPE STRING,
REQPOSITION TYPE STRING,
F1 TYPE STRING,
F2 TYPE STRING,
NOTES TYPE STRING,
USERID TYPE STRING,
RELOCATIONCOSTS TYPE STRING,
ADCOSTS TYPE STRING,
TRAVELCOSTS TYPE STRING,
HRCOSTS TYPE STRING,
EXTERNALCOSTS TYPE STRING,
BONUSCOSTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPOST_REQUISITION_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_HRPOST_REQUISITION_STR-TITLE sy-vline 
WA_HRPOST_REQUISITION_STR-DEPARTMENT sy-vline 
WA_HRPOST_REQUISITION_STR-REQUISITION_ID sy-vline 
WA_HRPOST_REQUISITION_STR-RECRUITERID sy-vline 
WA_HRPOST_REQUISITION_STR-MANAGERID sy-vline 
WA_HRPOST_REQUISITION_STR-LOCATION sy-vline 
WA_HRPOST_REQUISITION_STR-POSITIONS sy-vline 
WA_HRPOST_REQUISITION_STR-DESCRIPTIONID sy-vline 
WA_HRPOST_REQUISITION_STR-JOBDESCRIPTION sy-vline 
WA_HRPOST_REQUISITION_STR-REQTYPE sy-vline 
WA_HRPOST_REQUISITION_STR-COLLEGE sy-vline 
WA_HRPOST_REQUISITION_STR-REQPOSITION sy-vline 
WA_HRPOST_REQUISITION_STR-F1 sy-vline 
WA_HRPOST_REQUISITION_STR-F2 sy-vline 
WA_HRPOST_REQUISITION_STR-NOTES sy-vline 
WA_HRPOST_REQUISITION_STR-USERID sy-vline 
WA_HRPOST_REQUISITION_STR-RELOCATIONCOSTS sy-vline 
WA_HRPOST_REQUISITION_STR-ADCOSTS sy-vline 
WA_HRPOST_REQUISITION_STR-TRAVELCOSTS sy-vline 
WA_HRPOST_REQUISITION_STR-HRCOSTS sy-vline 
WA_HRPOST_REQUISITION_STR-EXTERNALCOSTS sy-vline 
WA_HRPOST_REQUISITION_STR-BONUSCOSTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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