ABAP Select data from SAP table /PRA/S_PN_SET_H_CACHE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PRA/S_PN_SET_H_CACHE 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 /PRA/S_PN_SET_H_CACHE. 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 /PRA/S_PN_SET_H_CACHE 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_/PRA/S_PN_SET_H_CACHE TYPE STANDARD TABLE OF /PRA/S_PN_SET_H_CACHE,
      WA_/PRA/S_PN_SET_H_CACHE TYPE /PRA/S_PN_SET_H_CACHE,
      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: </PRA/S_PN_SET_H_CACHE> TYPE /PRA/S_PN_SET_H_CACHE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PRA/S_PN_SET_H_CACHE
  INTO TABLE IT_/PRA/S_PN_SET_H_CACHE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PRA/S_PN_SET_H_CACHE
*  INTO TABLE @DATA(IT_/PRA/S_PN_SET_H_CACHE2).
*--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_/PRA/S_PN_SET_H_CACHE INDEX 1 INTO DATA(WA_/PRA/S_PN_SET_H_CACHE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PRA/S_PN_SET_H_CACHE ASSIGNING </PRA/S_PN_SET_H_CACHE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PRA/S_PN_SET_H_CACHE>-S_SET = 1.
</PRA/S_PN_SET_H_CACHE>-MANDT = 1.
</PRA/S_PN_SET_H_CACHE>-SET_UUID = 1.
</PRA/S_PN_SET_H_CACHE>-SET_AREA = 1.
</PRA/S_PN_SET_H_CACHE>-DN_NO = 1.

ENDLOOP.

LOOP AT IT_/PRA/S_PN_SET_H_CACHE INTO WA_/PRA/S_PN_SET_H_CACHE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PRA/S_PN_SET_H_CACHE-PRCS_DT, sy-vline,
  WA_/PRA/S_PN_SET_H_CACHE-FREQ_CD, sy-vline,
  WA_/PRA/S_PN_SET_H_CACHE-MAJPD_CD, sy-vline,
  WA_/PRA/S_PN_SET_H_CACHE-BUKRS, sy-vline,
  WA_/PRA/S_PN_SET_H_CACHE-VNAME, sy-vline,
  WA_/PRA/S_PN_SET_H_CACHE-DOI_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PRA/S_PN_SET_H_CACHE 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_/PRA/S_PN_SET_H_CACHE 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_/PRA/S_PN_SET_H_CACHE INTO WA_/PRA/S_PN_SET_H_CACHE.


*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 DN_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PRA/S_PN_SET_H_CACHE-DN_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PRA/S_PN_SET_H_CACHE-DN_NO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field VL_DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/PRA/S_PN_SET_H_CACHE-VL_DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PRA/S_PN_SET_H_CACHE-VL_DOC_YEAR.
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_/PRA/S_PN_SET_H_CACHE_STR, 
S_SET TYPE STRING,
MANDT TYPE STRING,
SET_UUID TYPE STRING,
SET_AREA TYPE STRING,
DN_NO TYPE STRING,
PRCS_DT TYPE STRING,
FREQ_CD TYPE STRING,
MAJPD_CD TYPE STRING,
BUKRS TYPE STRING,
VNAME TYPE STRING,
DOI_NO TYPE STRING,
CT_NO TYPE STRING,
WL_NO TYPE STRING,
WC_NO TYPE STRING,
MP_NO TYPE STRING,
HAS_LTXT TYPE STRING,
VCR_DEL_FL TYPE STRING,
VL_DOC_NO TYPE STRING,
VL_DOC_YEAR TYPE STRING,
XREF_VERSION TYPE STRING,
STATUS TYPE STRING,
COMMENTS TYPE STRING,
ACTION_DT TYPE STRING,
HL_PPA_RSN_CD TYPE STRING,
CREATED_ON TYPE STRING,
UPDATED_ON TYPE STRING,
CREATED_BY TYPE STRING,
UPDATED_BY TYPE STRING,
TT_SET_EVENTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PRA/S_PN_SET_H_CACHE_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_/PRA/S_PN_SET_H_CACHE_STR-S_SET sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-MANDT sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-SET_UUID sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-SET_AREA sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-DN_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-PRCS_DT sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-FREQ_CD sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-MAJPD_CD sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-BUKRS sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-VNAME sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-DOI_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-CT_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-WL_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-WC_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-MP_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-HAS_LTXT sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-VCR_DEL_FL sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-VL_DOC_NO sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-VL_DOC_YEAR sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-XREF_VERSION sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-STATUS sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-COMMENTS sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-ACTION_DT sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-HL_PPA_RSN_CD sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-CREATED_ON sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-UPDATED_ON sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-CREATED_BY sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-UPDATED_BY sy-vline 
WA_/PRA/S_PN_SET_H_CACHE_STR-TT_SET_EVENTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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