ABAP Select data from SAP table PRSEX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRSEX
*  INTO TABLE @DATA(IT_PRSEX2).
*--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_PRSEX INDEX 1 INTO DATA(WA_PRSEX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRSEX>-REQID = 1.
<PRSEX>-POBID = 1.
<PRSEX>-BEGDA = 1.
<PRSEX>-JOBID = 1.
<PRSEX>-SALRY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRSEX-EMPCT, sy-vline,
  WA_PRSEX-EXMPT, sy-vline,
  WA_PRSEX-JNAME, sy-vline,
  WA_PRSEX-EEOCT, sy-vline,
  WA_PRSEX-DOBID, sy-vline,
  WA_PRSEX-DNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRSEX 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_PRSEX 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_PRSEX INTO WA_PRSEX.


*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_PRSEX_STR, 
REQID TYPE STRING,
POBID TYPE STRING,
BEGDA TYPE STRING,
JOBID TYPE STRING,
SALRY TYPE STRING,
EMPCT TYPE STRING,
EXMPT TYPE STRING,
JNAME TYPE STRING,
EEOCT TYPE STRING,
DOBID TYPE STRING,
DNAME TYPE STRING,
MANID TYPE STRING,
MNAME TYPE STRING,
PHONE TYPE STRING,
FAXNO TYPE STRING,
EMAIL TYPE STRING,
ROOMN TYPE STRING,
BUILD TYPE STRING,
LVL01 TYPE STRING,
LVL02 TYPE STRING,
LVL03 TYPE STRING,
LVL04 TYPE STRING,
LVL05 TYPE STRING,
LVL06 TYPE STRING,
LVL07 TYPE STRING,
LVL08 TYPE STRING,
LVL09 TYPE STRING,
LVL10 TYPE STRING,
DESCR TYPE STRING,
CLERK TYPE STRING,
PLANT TYPE STRING,
PLPLS TYPE STRING,
GRADE TYPE STRING,
LEVEL TYPE STRING,
PGPSG TYPE STRING,
RESRF TYPE STRING,
PNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRSEX_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_PRSEX_STR-REQID sy-vline 
WA_PRSEX_STR-POBID sy-vline 
WA_PRSEX_STR-BEGDA sy-vline 
WA_PRSEX_STR-JOBID sy-vline 
WA_PRSEX_STR-SALRY sy-vline 
WA_PRSEX_STR-EMPCT sy-vline 
WA_PRSEX_STR-EXMPT sy-vline 
WA_PRSEX_STR-JNAME sy-vline 
WA_PRSEX_STR-EEOCT sy-vline 
WA_PRSEX_STR-DOBID sy-vline 
WA_PRSEX_STR-DNAME sy-vline 
WA_PRSEX_STR-MANID sy-vline 
WA_PRSEX_STR-MNAME sy-vline 
WA_PRSEX_STR-PHONE sy-vline 
WA_PRSEX_STR-FAXNO sy-vline 
WA_PRSEX_STR-EMAIL sy-vline 
WA_PRSEX_STR-ROOMN sy-vline 
WA_PRSEX_STR-BUILD sy-vline 
WA_PRSEX_STR-LVL01 sy-vline 
WA_PRSEX_STR-LVL02 sy-vline 
WA_PRSEX_STR-LVL03 sy-vline 
WA_PRSEX_STR-LVL04 sy-vline 
WA_PRSEX_STR-LVL05 sy-vline 
WA_PRSEX_STR-LVL06 sy-vline 
WA_PRSEX_STR-LVL07 sy-vline 
WA_PRSEX_STR-LVL08 sy-vline 
WA_PRSEX_STR-LVL09 sy-vline 
WA_PRSEX_STR-LVL10 sy-vline 
WA_PRSEX_STR-DESCR sy-vline 
WA_PRSEX_STR-CLERK sy-vline 
WA_PRSEX_STR-PLANT sy-vline 
WA_PRSEX_STR-PLPLS sy-vline 
WA_PRSEX_STR-GRADE sy-vline 
WA_PRSEX_STR-LEVEL sy-vline 
WA_PRSEX_STR-PGPSG sy-vline 
WA_PRSEX_STR-RESRF sy-vline 
WA_PRSEX_STR-PNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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