ABAP Select data from SAP table PRKO into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRKO
*  INTO TABLE @DATA(IT_PRKO2).
*--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_PRKO INDEX 1 INTO DATA(WA_PRKO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PRKO ASSIGNING <PRKO>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRKO>-ANZ_TAGE = 1.
<PRKO>-ANZ_MONATE = 1.
<PRKO>-ANZ_WOCHEN = 1.
<PRKO>-ANZ_JAHRE = 1.
<PRKO>-PRSOK = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRKO-KMEIN, sy-vline,
WA_PRKO-CEPOK, sy-vline,
WA_PRKO-MPROK, sy-vline,
WA_PRKO-KOUPD, sy-vline,
WA_PRKO-AKTNR, sy-vline,
WA_PRKO-KNUMA_PI, sy-vline.
ENDLOOP. *Add any further fields from structure WA_PRKO 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_PRKO 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_PRKO INTO WA_PRKO. *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 CUNIT, internal->external for field KMEIN CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_PRKO-KMEIN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PRKO-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PRKO-AKTNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PRKO-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KNUMA_PI CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PRKO-KNUMA_PI IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PRKO-KNUMA_PI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KNUMA_AG CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_PRKO-KNUMA_AG IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_PRKO-KNUMA_AG.
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_PRKO_STR,
ANZ_TAGE TYPE STRING,
ANZ_MONATE TYPE STRING,
ANZ_WOCHEN TYPE STRING,
ANZ_JAHRE TYPE STRING,
PRSOK TYPE STRING,
KMEIN TYPE STRING,
CEPOK TYPE STRING,
MPROK TYPE STRING,
KOUPD TYPE STRING,
AKTNR TYPE STRING,
KNUMA_PI TYPE STRING,
KNUMA_AG TYPE STRING,
KPEIN TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
MWSBP TYPE STRING,
NETPR TYPE STRING,
WAVWR TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
CMPRE TYPE STRING,
SKFBP TYPE STRING,
BONBA TYPE STRING,
CMPRE_FLT TYPE STRING,
NRAB_VALUE TYPE STRING,
PAYMNT TYPE STRING,END OF T_EKKO_STR. DATA: WA_PRKO_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_PRKO_STR-ANZ_TAGE sy-vline
WA_PRKO_STR-ANZ_MONATE sy-vline
WA_PRKO_STR-ANZ_WOCHEN sy-vline
WA_PRKO_STR-ANZ_JAHRE sy-vline
WA_PRKO_STR-PRSOK sy-vline
WA_PRKO_STR-KMEIN sy-vline
WA_PRKO_STR-CEPOK sy-vline
WA_PRKO_STR-MPROK sy-vline
WA_PRKO_STR-KOUPD sy-vline
WA_PRKO_STR-AKTNR sy-vline
WA_PRKO_STR-KNUMA_PI sy-vline
WA_PRKO_STR-KNUMA_AG sy-vline
WA_PRKO_STR-KPEIN sy-vline
WA_PRKO_STR-BRTWR sy-vline
WA_PRKO_STR-NETWR sy-vline
WA_PRKO_STR-MWSBP sy-vline
WA_PRKO_STR-NETPR sy-vline
WA_PRKO_STR-WAVWR sy-vline
WA_PRKO_STR-KZWI1 sy-vline
WA_PRKO_STR-KZWI2 sy-vline
WA_PRKO_STR-KZWI3 sy-vline
WA_PRKO_STR-KZWI4 sy-vline
WA_PRKO_STR-KZWI5 sy-vline
WA_PRKO_STR-KZWI6 sy-vline
WA_PRKO_STR-CMPRE sy-vline
WA_PRKO_STR-SKFBP sy-vline
WA_PRKO_STR-BONBA sy-vline
WA_PRKO_STR-CMPRE_FLT sy-vline
WA_PRKO_STR-NRAB_VALUE sy-vline
WA_PRKO_STR-PAYMNT sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.