ABAP Select data from SAP table SAPWLSUMM4 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 SAPWLSUMM4 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 SAPWLSUMM4. 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 SAPWLSUMM4 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_SAPWLSUMM4 TYPE STANDARD TABLE OF SAPWLSUMM4,
      WA_SAPWLSUMM4 TYPE SAPWLSUMM4,
      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: <SAPWLSUMM4> TYPE SAPWLSUMM4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SAPWLSUMM4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SAPWLSUMM4
  INTO TABLE IT_SAPWLSUMM4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAPWLSUMM4
*  INTO TABLE @DATA(IT_SAPWLSUMM42).
*--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_SAPWLSUMM4 INDEX 1 INTO DATA(WA_SAPWLSUMM42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SAPWLSUMM4 ASSIGNING <SAPWLSUMM4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAPWLSUMM4>-TASKTYPE = 1.
<SAPWLSUMM4>-DIASTEPCNT = 1.
<SAPWLSUMM4>-MRESPTIME = 1.
<SAPWLSUMM4>-MPROCTI = 1.
<SAPWLSUMM4>-MCPUTI = 1.

ENDLOOP.

LOOP AT IT_SAPWLSUMM4 INTO WA_SAPWLSUMM4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAPWLSUMM4-MDBTI, sy-vline,
  WA_SAPWLSUMM4-MDBPROCTI, sy-vline,
  WA_SAPWLSUMM4-MWAITTI, sy-vline,
  WA_SAPWLSUMM4-MROLLINTI, sy-vline,
  WA_SAPWLSUMM4-MROLWAITI, sy-vline,
  WA_SAPWLSUMM4-MLOADGENTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAPWLSUMM4 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_SAPWLSUMM4 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_SAPWLSUMM4 INTO WA_SAPWLSUMM4.


*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_SAPWLSUMM4_STR, 
TASKTYPE TYPE STRING,
DIASTEPCNT TYPE STRING,
MRESPTIME TYPE STRING,
MPROCTI TYPE STRING,
MCPUTI TYPE STRING,
MDBTI TYPE STRING,
MDBPROCTI TYPE STRING,
MWAITTI TYPE STRING,
MROLLINTI TYPE STRING,
MROLWAITI TYPE STRING,
MLOADGENTI TYPE STRING,
MLOCKTI TYPE STRING,
MCPICTI TYPE STRING,
FNETMT TYPE STRING,
FGUIMT TYPE STRING,
FGUICNT TYPE STRING,
BYTES TYPE STRING,
READSEQCNT TYPE STRING,
READSEQST TYPE STRING,
READSEQMT TYPE STRING,
READSEQREC TYPE STRING,
READDIRCNT TYPE STRING,
READDIRST TYPE STRING,
READDIRMT TYPE STRING,
READDIRREC TYPE STRING,
READSEQBUF TYPE STRING,
CHNGCNT TYPE STRING,
CHNGST TYPE STRING,
CHNGMT TYPE STRING,
CHNGREC TYPE STRING,
DBREQUCNT TYPE STRING,
DBREQMTI TYPE STRING,
PHYREADCNT TYPE STRING,
PHYCHNGREC TYPE STRING,
PHYDBCALLS TYPE STRING,
DBUFREADCN TYPE STRING,
DBPCOUNT TYPE STRING,
DBPTIME TYPE STRING,
DBPAVTI TYPE STRING,
ROLLINTI TYPE STRING,
ROLLWAITTI TYPE STRING,
ROLLOUTTI TYPE STRING,
ROLLINCNT TYPE STRING,
ROLLOUTCNT TYPE STRING,
MRLINTIM TYPE STRING,
MROLLOUTI TYPE STRING,
MPCPUTI TYPE STRING,
MPDBTI TYPE STRING,
MPDBPROCTI TYPE STRING,
MPWAITTI TYPE STRING,
MPROLLINTI TYPE STRING,
MPROLWAITI TYPE STRING,
MPLOADGENT TYPE STRING,
MPFGUITI TYPE STRING,
VMC_CALLCOUNT TYPE STRING,
VMC_CPUTIME TYPE STRING,
VMC_ELAPTIME TYPE STRING,
VMC_AVGCPU TYPE STRING,
VMC_AVGELAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAPWLSUMM4_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_SAPWLSUMM4_STR-TASKTYPE sy-vline 
WA_SAPWLSUMM4_STR-DIASTEPCNT sy-vline 
WA_SAPWLSUMM4_STR-MRESPTIME sy-vline 
WA_SAPWLSUMM4_STR-MPROCTI sy-vline 
WA_SAPWLSUMM4_STR-MCPUTI sy-vline 
WA_SAPWLSUMM4_STR-MDBTI sy-vline 
WA_SAPWLSUMM4_STR-MDBPROCTI sy-vline 
WA_SAPWLSUMM4_STR-MWAITTI sy-vline 
WA_SAPWLSUMM4_STR-MROLLINTI sy-vline 
WA_SAPWLSUMM4_STR-MROLWAITI sy-vline 
WA_SAPWLSUMM4_STR-MLOADGENTI sy-vline 
WA_SAPWLSUMM4_STR-MLOCKTI sy-vline 
WA_SAPWLSUMM4_STR-MCPICTI sy-vline 
WA_SAPWLSUMM4_STR-FNETMT sy-vline 
WA_SAPWLSUMM4_STR-FGUIMT sy-vline 
WA_SAPWLSUMM4_STR-FGUICNT sy-vline 
WA_SAPWLSUMM4_STR-BYTES sy-vline 
WA_SAPWLSUMM4_STR-READSEQCNT sy-vline 
WA_SAPWLSUMM4_STR-READSEQST sy-vline 
WA_SAPWLSUMM4_STR-READSEQMT sy-vline 
WA_SAPWLSUMM4_STR-READSEQREC sy-vline 
WA_SAPWLSUMM4_STR-READDIRCNT sy-vline 
WA_SAPWLSUMM4_STR-READDIRST sy-vline 
WA_SAPWLSUMM4_STR-READDIRMT sy-vline 
WA_SAPWLSUMM4_STR-READDIRREC sy-vline 
WA_SAPWLSUMM4_STR-READSEQBUF sy-vline 
WA_SAPWLSUMM4_STR-CHNGCNT sy-vline 
WA_SAPWLSUMM4_STR-CHNGST sy-vline 
WA_SAPWLSUMM4_STR-CHNGMT sy-vline 
WA_SAPWLSUMM4_STR-CHNGREC sy-vline 
WA_SAPWLSUMM4_STR-DBREQUCNT sy-vline 
WA_SAPWLSUMM4_STR-DBREQMTI sy-vline 
WA_SAPWLSUMM4_STR-PHYREADCNT sy-vline 
WA_SAPWLSUMM4_STR-PHYCHNGREC sy-vline 
WA_SAPWLSUMM4_STR-PHYDBCALLS sy-vline 
WA_SAPWLSUMM4_STR-DBUFREADCN sy-vline 
WA_SAPWLSUMM4_STR-DBPCOUNT sy-vline 
WA_SAPWLSUMM4_STR-DBPTIME sy-vline 
WA_SAPWLSUMM4_STR-DBPAVTI sy-vline 
WA_SAPWLSUMM4_STR-ROLLINTI sy-vline 
WA_SAPWLSUMM4_STR-ROLLWAITTI sy-vline 
WA_SAPWLSUMM4_STR-ROLLOUTTI sy-vline 
WA_SAPWLSUMM4_STR-ROLLINCNT sy-vline 
WA_SAPWLSUMM4_STR-ROLLOUTCNT sy-vline 
WA_SAPWLSUMM4_STR-MRLINTIM sy-vline 
WA_SAPWLSUMM4_STR-MROLLOUTI sy-vline 
WA_SAPWLSUMM4_STR-MPCPUTI sy-vline 
WA_SAPWLSUMM4_STR-MPDBTI sy-vline 
WA_SAPWLSUMM4_STR-MPDBPROCTI sy-vline 
WA_SAPWLSUMM4_STR-MPWAITTI sy-vline 
WA_SAPWLSUMM4_STR-MPROLLINTI sy-vline 
WA_SAPWLSUMM4_STR-MPROLWAITI sy-vline 
WA_SAPWLSUMM4_STR-MPLOADGENT sy-vline 
WA_SAPWLSUMM4_STR-MPFGUITI sy-vline 
WA_SAPWLSUMM4_STR-VMC_CALLCOUNT sy-vline 
WA_SAPWLSUMM4_STR-VMC_CPUTIME sy-vline 
WA_SAPWLSUMM4_STR-VMC_ELAPTIME sy-vline 
WA_SAPWLSUMM4_STR-VMC_AVGCPU sy-vline 
WA_SAPWLSUMM4_STR-VMC_AVGELAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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