ABAP Select data from SAP table PFVMC_REC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PFVMC_REC 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 PFVMC_REC. 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 PFVMC_REC 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_PFVMC_REC TYPE STANDARD TABLE OF PFVMC_REC,
      WA_PFVMC_REC TYPE PFVMC_REC,
      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: <PFVMC_REC> TYPE PFVMC_REC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFVMC_REC
*  INTO TABLE @DATA(IT_PFVMC_REC2).
*--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_PFVMC_REC INDEX 1 INTO DATA(WA_PFVMC_REC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFVMC_REC>-EYEON = 1.
<PFVMC_REC>-RECLEN = 1.
<PFVMC_REC>-RECTYPE = 1.
<PFVMC_REC>-NEXTREC = 1.
<PFVMC_REC>-PREVREC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFVMC_REC-VM_ELAPSED_TIME, sy-vline,
  WA_PFVMC_REC-VM_CPU_TIME, sy-vline,
  WA_PFVMC_REC-VM_HANDLE, sy-vline,
  WA_PFVMC_REC-VM_TYPE, sy-vline,
  WA_PFVMC_REC-CALL_COUNT, sy-vline,
  WA_PFVMC_REC-REQUEST_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFVMC_REC 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_PFVMC_REC 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_PFVMC_REC INTO WA_PFVMC_REC.


*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_PFVMC_REC_STR, 
EYEON TYPE STRING,
RECLEN TYPE STRING,
RECTYPE TYPE STRING,
NEXTREC TYPE STRING,
PREVREC TYPE STRING,
VM_ELAPSED_TIME TYPE STRING,
VM_CPU_TIME TYPE STRING,
VM_HANDLE TYPE STRING,
VM_TYPE TYPE STRING,
CALL_COUNT TYPE STRING,
REQUEST_TYPE TYPE STRING,
MEM_ALLOC_LOCAL TYPE STRING,
MEM_ALLOC_SHARED TYPE STRING,
MEM_OBJS_ALLOCATED_YOUNG TYPE STRING,
MEM_OBJS_ALLOCATED_OLD TYPE STRING,
MEM_OBJS_ALLOCATED_SHARED TYPE STRING,
MEM_OBJS_FREED_YOUNG TYPE STRING,
MEM_OBJS_FREED_OLD TYPE STRING,
MEM_OBJS_FREED_SHARED TYPE STRING,
MEM_OBJS_PROMOTED TYPE STRING,
MEM_CODE_CACHE_ALLOCATED_LOCAL TYPE STRING,
MEM_CODE_CACHE_ALLOCATED_SHARE TYPE STRING,
MEM_CODE_CACHE_FREED_LOCAL TYPE STRING,
MEM_CODE_CACHE_FREED_SHARED TYPE STRING,
MEM_CODE_CACHE_WRONG_PREDICTIO TYPE STRING,
MEM_CODE_CACHE_MAX_WORK_MEM TYPE STRING,
MEM_CODE_CACHE_USED_LOCAL TYPE STRING,
MEM_CODE_CACHE_USED_SHARED TYPE STRING,
MEM_CLASS_ALLOCATED_LOCAL TYPE STRING,
MEM_CLASS_ALLOCATED_SHARE TYPE STRING,
MEM_CLASS_FREED_LOCAL TYPE STRING,
MEM_CLASS_FREED_SHARED TYPE STRING,
MEM_MISC_LOCAL TYPE STRING,
MEM_MISC_ALLOC_SHARED TYPE STRING,
MEM_MISC_FREED_LOCAL TYPE STRING,
MEM_MISC_FREED_SHARED TYPE STRING,
MEM_MISC_PROFILING TYPE STRING,
MEM_IO_FILE_WRITE TYPE STRING,
MEM_IO_FILE_READ TYPE STRING,
MEM_IO_NET_SEND TYPE STRING,
MEM_IO_NET_RECEIVE TYPE STRING,
TIME_GC_YOUNG TYPE STRING,
TIME_GC_OLD TYPE STRING,
TIME_GC_SHARED TYPE STRING,
TIME_GC_YOUNG_CPU TYPE STRING,
TIME_GC_OLD_CPU TYPE STRING,
TIME_GC_SHARED_CPU TYPE STRING,
TIME_GEN_JAVA TYPE STRING,
TIME_GEN_BYTE TYPE STRING,
TIME_GEN_NATIVE TYPE STRING,
TIME_ATTACH TYPE STRING,
TIME_DETACH TYPE STRING,
TIME_CLONE TYPE STRING,
COUNT_LOAD_CLASSES_LOCAL TYPE STRING,
COUNT_LOAD_CLASSES_SHARED TYPE STRING,
COUNT_LOAD_CLASSES_CONFLICT TYPE STRING,
COUNT_GC_YOUNG TYPE STRING,
COUNT_GC_OLD TYPE STRING,
COUNT_GC_SHARED TYPE STRING,
COUNT_GC_EXPL_LOCAL TYPE STRING,
COUNT_GC_EXPL_SHARED TYPE STRING,
COUNT_JIT_TRIAL TYPE STRING,
COUNT_JIT_SUCCEED TYPE STRING,
COUNT_JIT_RETRY TYPE STRING,
COUNT_JIT_DECOMPILE TYPE STRING,
COUNT_ATTACH TYPE STRING,
COUNT_DETACH TYPE STRING,
COUNT_CLONE TYPE STRING,
COUNT_THREAD_SWITCH TYPE STRING,
MAX_THREAD_RUN_TIME TYPE STRING,
COUNT_NATIVE_BYTE_SWITCH TYPE STRING,
EYEOFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFVMC_REC_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_PFVMC_REC_STR-EYEON sy-vline 
WA_PFVMC_REC_STR-RECLEN sy-vline 
WA_PFVMC_REC_STR-RECTYPE sy-vline 
WA_PFVMC_REC_STR-NEXTREC sy-vline 
WA_PFVMC_REC_STR-PREVREC sy-vline 
WA_PFVMC_REC_STR-VM_ELAPSED_TIME sy-vline 
WA_PFVMC_REC_STR-VM_CPU_TIME sy-vline 
WA_PFVMC_REC_STR-VM_HANDLE sy-vline 
WA_PFVMC_REC_STR-VM_TYPE sy-vline 
WA_PFVMC_REC_STR-CALL_COUNT sy-vline 
WA_PFVMC_REC_STR-REQUEST_TYPE sy-vline 
WA_PFVMC_REC_STR-MEM_ALLOC_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_ALLOC_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_ALLOCATED_YOUNG sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_ALLOCATED_OLD sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_ALLOCATED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_FREED_YOUNG sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_FREED_OLD sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_FREED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_OBJS_PROMOTED sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_ALLOCATED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_ALLOCATED_SHARE sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_FREED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_FREED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_WRONG_PREDICTIO sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_MAX_WORK_MEM sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_USED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_CODE_CACHE_USED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_CLASS_ALLOCATED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_CLASS_ALLOCATED_SHARE sy-vline 
WA_PFVMC_REC_STR-MEM_CLASS_FREED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_CLASS_FREED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_MISC_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_MISC_ALLOC_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_MISC_FREED_LOCAL sy-vline 
WA_PFVMC_REC_STR-MEM_MISC_FREED_SHARED sy-vline 
WA_PFVMC_REC_STR-MEM_MISC_PROFILING sy-vline 
WA_PFVMC_REC_STR-MEM_IO_FILE_WRITE sy-vline 
WA_PFVMC_REC_STR-MEM_IO_FILE_READ sy-vline 
WA_PFVMC_REC_STR-MEM_IO_NET_SEND sy-vline 
WA_PFVMC_REC_STR-MEM_IO_NET_RECEIVE sy-vline 
WA_PFVMC_REC_STR-TIME_GC_YOUNG sy-vline 
WA_PFVMC_REC_STR-TIME_GC_OLD sy-vline 
WA_PFVMC_REC_STR-TIME_GC_SHARED sy-vline 
WA_PFVMC_REC_STR-TIME_GC_YOUNG_CPU sy-vline 
WA_PFVMC_REC_STR-TIME_GC_OLD_CPU sy-vline 
WA_PFVMC_REC_STR-TIME_GC_SHARED_CPU sy-vline 
WA_PFVMC_REC_STR-TIME_GEN_JAVA sy-vline 
WA_PFVMC_REC_STR-TIME_GEN_BYTE sy-vline 
WA_PFVMC_REC_STR-TIME_GEN_NATIVE sy-vline 
WA_PFVMC_REC_STR-TIME_ATTACH sy-vline 
WA_PFVMC_REC_STR-TIME_DETACH sy-vline 
WA_PFVMC_REC_STR-TIME_CLONE sy-vline 
WA_PFVMC_REC_STR-COUNT_LOAD_CLASSES_LOCAL sy-vline 
WA_PFVMC_REC_STR-COUNT_LOAD_CLASSES_SHARED sy-vline 
WA_PFVMC_REC_STR-COUNT_LOAD_CLASSES_CONFLICT sy-vline 
WA_PFVMC_REC_STR-COUNT_GC_YOUNG sy-vline 
WA_PFVMC_REC_STR-COUNT_GC_OLD sy-vline 
WA_PFVMC_REC_STR-COUNT_GC_SHARED sy-vline 
WA_PFVMC_REC_STR-COUNT_GC_EXPL_LOCAL sy-vline 
WA_PFVMC_REC_STR-COUNT_GC_EXPL_SHARED sy-vline 
WA_PFVMC_REC_STR-COUNT_JIT_TRIAL sy-vline 
WA_PFVMC_REC_STR-COUNT_JIT_SUCCEED sy-vline 
WA_PFVMC_REC_STR-COUNT_JIT_RETRY sy-vline 
WA_PFVMC_REC_STR-COUNT_JIT_DECOMPILE sy-vline 
WA_PFVMC_REC_STR-COUNT_ATTACH sy-vline 
WA_PFVMC_REC_STR-COUNT_DETACH sy-vline 
WA_PFVMC_REC_STR-COUNT_CLONE sy-vline 
WA_PFVMC_REC_STR-COUNT_THREAD_SWITCH sy-vline 
WA_PFVMC_REC_STR-MAX_THREAD_RUN_TIME sy-vline 
WA_PFVMC_REC_STR-COUNT_NATIVE_BYTE_SWITCH sy-vline 
WA_PFVMC_REC_STR-EYEOFF sy-vline      INTO ld_text SEPARATED BY SPACE.

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