ABAP Select data from SAP table PPETDP_ECN_CAP_IP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPETDP_ECN_CAP_IP
*  INTO TABLE @DATA(IT_PPETDP_ECN_CAP_IP2).
*--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_PPETDP_ECN_CAP_IP INDEX 1 INTO DATA(WA_PPETDP_ECN_CAP_IP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPETDP_ECN_CAP_IP>-PAGUID = 1.
<PPETDP_ECN_CAP_IP>-AENNR = 1.
<PPETDP_ECN_CAP_IP>-PNGUID = 1.
<PPETDP_ECN_CAP_IP>-VERSIOID = 1.
<PPETDP_ECN_CAP_IP>-DATEF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPETDP_ECN_CAP_IP-CAPREQ, sy-vline,
  WA_PPETDP_ECN_CAP_IP-CAPREQFIX, sy-vline,
  WA_PPETDP_ECN_CAP_IP-UNITC, sy-vline,
  WA_PPETDP_ECN_CAP_IP-BUCKETVAR, sy-vline,
  WA_PPETDP_ECN_CAP_IP-BUCKETFIX, sy-vline,
  WA_PPETDP_ECN_CAP_IP-BUCKETUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPETDP_ECN_CAP_IP 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_PPETDP_ECN_CAP_IP 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_PPETDP_ECN_CAP_IP INTO WA_PPETDP_ECN_CAP_IP.


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

*Conversion exit CUNIT, internal->external for field UNITC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPETDP_ECN_CAP_IP-UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPETDP_ECN_CAP_IP-UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BUCKETUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPETDP_ECN_CAP_IP-BUCKETUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPETDP_ECN_CAP_IP-BUCKETUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MODE_UNITC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPETDP_ECN_CAP_IP-MODE_UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPETDP_ECN_CAP_IP-MODE_UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MODE_BUCKETUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPETDP_ECN_CAP_IP-MODE_BUCKETUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPETDP_ECN_CAP_IP-MODE_BUCKETUNIT.
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_PPETDP_ECN_CAP_IP_STR, 
PAGUID TYPE STRING,
AENNR TYPE STRING,
PNGUID TYPE STRING,
VERSIOID TYPE STRING,
DATEF TYPE STRING,
CAPREQ TYPE STRING,
CAPREQFIX TYPE STRING,
UNITC TYPE STRING,
BUCKETVAR TYPE STRING,
BUCKETFIX TYPE STRING,
BUCKETUNIT TYPE STRING,
VRSIOEX TYPE STRING,
CAP_RESOURCE TYPE STRING,
ACTIVITY TYPE STRING,
ALTNUM TYPE STRING,
AENNR_DATUV TYPE STRING,
NEXT_AENNR TYPE STRING,
NEXT_AENNR_DATUV TYPE STRING,
MODE_CAPREQ TYPE STRING,
MODE_CAPREQFIX TYPE STRING,
MODE_UNITC TYPE STRING,
MODE_BUCKETVAR TYPE STRING,
MODE_BUCKETFIX TYPE STRING,
MODE_BUCKETUNIT TYPE STRING,
VALIDITY TYPE STRING,
VALIDITY_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPETDP_ECN_CAP_IP_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_PPETDP_ECN_CAP_IP_STR-PAGUID sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-AENNR sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-PNGUID sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-VERSIOID sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-DATEF sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-CAPREQ sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-CAPREQFIX sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-UNITC sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-BUCKETVAR sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-BUCKETFIX sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-BUCKETUNIT sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-VRSIOEX sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-CAP_RESOURCE sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-ACTIVITY sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-ALTNUM sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-AENNR_DATUV sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-NEXT_AENNR sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-NEXT_AENNR_DATUV sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_CAPREQ sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_CAPREQFIX sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_UNITC sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_BUCKETVAR sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_BUCKETFIX sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-MODE_BUCKETUNIT sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-VALIDITY sy-vline 
WA_PPETDP_ECN_CAP_IP_STR-VALIDITY_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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