ABAP Select data from SAP table PERS_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PERS_DATA
*  INTO TABLE @DATA(IT_PERS_DATA2).
*--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_PERS_DATA INDEX 1 INTO DATA(WA_PERS_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PERS_DATA>-DATE_FROM = 1.
<PERS_DATA>-DATE_TO = 1.
<PERS_DATA>-TITLE_P = 1.
<PERS_DATA>-NAME_FIRST = 1.
<PERS_DATA>-NAME_LAST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PERS_DATA-NAME2_P, sy-vline,
  WA_PERS_DATA-NAMEMIDDLE, sy-vline,
  WA_PERS_DATA-NAME_LAST2, sy-vline,
  WA_PERS_DATA-NAME_TEXT, sy-vline,
  WA_PERS_DATA-CONVERTED, sy-vline,
  WA_PERS_DATA-TITLE_ACA1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PERS_DATA 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_PERS_DATA 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_PERS_DATA INTO WA_PERS_DATA.


*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 ISOLA, internal->external for field LANGU_P
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PERS_DATA-LANGU_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PERS_DATA-LANGU_P.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU_CR_P
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PERS_DATA-LANGU_CR_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PERS_DATA-LANGU_CR_P.
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_PERS_DATA_STR, 
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
TITLE_P TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
NAME2_P TYPE STRING,
NAMEMIDDLE TYPE STRING,
NAME_LAST2 TYPE STRING,
NAME_TEXT TYPE STRING,
CONVERTED TYPE STRING,
TITLE_ACA1 TYPE STRING,
TITLE_ACA2 TYPE STRING,
PREFIX1 TYPE STRING,
PREFIX2 TYPE STRING,
TITLE_SPPL TYPE STRING,
NICKNAME TYPE STRING,
INITIALS TYPE STRING,
NAMEFORMAT TYPE STRING,
NAMCOUNTRY TYPE STRING,
PROFESSION TYPE STRING,
SEX TYPE STRING,
LANGU_P TYPE STRING,
SORT1_P TYPE STRING,
SORT2_P TYPE STRING,
SORT_PHN_P TYPE STRING,
PERSORIGIN TYPE STRING,
LANGU_CR_P TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PERS_DATA_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_PERS_DATA_STR-DATE_FROM sy-vline 
WA_PERS_DATA_STR-DATE_TO sy-vline 
WA_PERS_DATA_STR-TITLE_P sy-vline 
WA_PERS_DATA_STR-NAME_FIRST sy-vline 
WA_PERS_DATA_STR-NAME_LAST sy-vline 
WA_PERS_DATA_STR-NAME2_P sy-vline 
WA_PERS_DATA_STR-NAMEMIDDLE sy-vline 
WA_PERS_DATA_STR-NAME_LAST2 sy-vline 
WA_PERS_DATA_STR-NAME_TEXT sy-vline 
WA_PERS_DATA_STR-CONVERTED sy-vline 
WA_PERS_DATA_STR-TITLE_ACA1 sy-vline 
WA_PERS_DATA_STR-TITLE_ACA2 sy-vline 
WA_PERS_DATA_STR-PREFIX1 sy-vline 
WA_PERS_DATA_STR-PREFIX2 sy-vline 
WA_PERS_DATA_STR-TITLE_SPPL sy-vline 
WA_PERS_DATA_STR-NICKNAME sy-vline 
WA_PERS_DATA_STR-INITIALS sy-vline 
WA_PERS_DATA_STR-NAMEFORMAT sy-vline 
WA_PERS_DATA_STR-NAMCOUNTRY sy-vline 
WA_PERS_DATA_STR-PROFESSION sy-vline 
WA_PERS_DATA_STR-SEX sy-vline 
WA_PERS_DATA_STR-LANGU_P sy-vline 
WA_PERS_DATA_STR-SORT1_P sy-vline 
WA_PERS_DATA_STR-SORT2_P sy-vline 
WA_PERS_DATA_STR-SORT_PHN_P sy-vline 
WA_PERS_DATA_STR-PERSORIGIN sy-vline 
WA_PERS_DATA_STR-LANGU_CR_P sy-vline      INTO ld_text SEPARATED BY SPACE.

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