ABAP Select data from SAP table DMC_RUN_INFO_EXT_ALV_GRID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMC_RUN_INFO_EXT_ALV_GRID
*  INTO TABLE @DATA(IT_DMC_RUN_INFO_EXT_ALV_GRID2).
*--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_DMC_RUN_INFO_EXT_ALV_GRID INDEX 1 INTO DATA(WA_DMC_RUN_INFO_EXT_ALV_GRID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMC_RUN_INFO_EXT_ALV_GRID>-TABNAME_LONG = 1.
<DMC_RUN_INFO_EXT_ALV_GRID>-TABNAME_INT = 1.
<DMC_RUN_INFO_EXT_ALV_GRID>-CONVOBJ_IDENT = 1.
<DMC_RUN_INFO_EXT_ALV_GRID>-STRUCTURE = 1.
<DMC_RUN_INFO_EXT_ALV_GRID>-DDICNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMC_RUN_INFO_EXT_ALV_GRID-PREC_ID, sy-vline,
  WA_DMC_RUN_INFO_EXT_ALV_GRID-COLL_ACP_ID, sy-vline,
  WA_DMC_RUN_INFO_EXT_ALV_GRID-ACPLAN_ID, sy-vline,
  WA_DMC_RUN_INFO_EXT_ALV_GRID-MT_IDENTIFIER, sy-vline,
  WA_DMC_RUN_INFO_EXT_ALV_GRID-CATEGORY, sy-vline,
  WA_DMC_RUN_INFO_EXT_ALV_GRID-SUM_CONVOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMC_RUN_INFO_EXT_ALV_GRID 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_DMC_RUN_INFO_EXT_ALV_GRID 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_DMC_RUN_INFO_EXT_ALV_GRID INTO WA_DMC_RUN_INFO_EXT_ALV_GRID.


*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_DMC_RUN_INFO_EXT_ALV_GRID_STR, 
TABNAME_LONG TYPE STRING,
TABNAME_INT TYPE STRING,
CONVOBJ_IDENT TYPE STRING,
STRUCTURE TYPE STRING,
DDICNAME TYPE STRING,
PREC_ID TYPE STRING,
COLL_ACP_ID TYPE STRING,
ACPLAN_ID TYPE STRING,
MT_IDENTIFIER TYPE STRING,
CATEGORY TYPE STRING,
SUM_CONVOBJ TYPE STRING,
SUM_ACPLAN TYPE STRING,
SUM_PORTION TYPE STRING,
SUM_RECS_CALC TYPE STRING,
SUM_BYTES_CALC TYPE STRING,
SUM_RECS_READ TYPE STRING,
SUM_UC_PROBTAB_RECS TYPE STRING,
SUM_IN_PROCESS TYPE STRING,
SUM_FINISHED TYPE STRING,
SUM_FAILED TYPE STRING,
RUNTIME TYPE STRING,
RUNTIME_NET TYPE STRING,
TIMESTAMP_START TYPE STRING,
TIMESTAMP_END TYPE STRING,
SUM_RT_READ TYPE STRING,
SUM_RT_TCNV_IN TYPE STRING,
SUM_RT_SCNV TYPE STRING,
SUM_RT_TCNV_OUT TYPE STRING,
SUM_RT_WRITE TYPE STRING,
SUM_RECS_INS TYPE STRING,
SUM_RECS_UPD TYPE STRING,
SUM_RECS_DEL TYPE STRING,
DISP_SUM_RECS_CALC TYPE STRING,
DISP_SUM_RECS_READ TYPE STRING,
DISP_SUM_BYTES_CALC_GB TYPE STRING,
DISP_SUM_BYTES_CALC_MB TYPE STRING,
DISP_SUM_BYTES_CALC_KB TYPE STRING,
DISP_SUM_BYTES_CALC_B TYPE STRING,
DISP_STARTTIME TYPE STRING,
DISP_ENDTIME TYPE STRING,
DISP_RUNTIME TYPE STRING,
DISP_RUNTIME_NET TYPE STRING,
DISP_SUM_RT_READ TYPE STRING,
DISP_SUM_RT_TCNV_IN TYPE STRING,
DISP_SUM_RT_SCNV TYPE STRING,
DISP_SUM_RT_TCNV_OUT TYPE STRING,
DISP_SUM_RT_WRITE TYPE STRING,
DISP_REL_RT_READ TYPE STRING,
DISP_REL_RT_TCNV_IN TYPE STRING,
DISP_REL_RT_SCNV TYPE STRING,
DISP_REL_RT_TCNV_OUT TYPE STRING,
DISP_REL_RT_WRITE TYPE STRING,
DISP_THROUGHPUT TYPE STRING,
DISP_NET_THROUGHPUT TYPE STRING,
DISP_DURATION TYPE STRING,
DISP_REM_DURATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMC_RUN_INFO_EXT_ALV_GRID_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_DMC_RUN_INFO_EXT_ALV_GRID_STR-TABNAME_LONG sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-TABNAME_INT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-CONVOBJ_IDENT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-STRUCTURE sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DDICNAME sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-PREC_ID sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-COLL_ACP_ID sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-ACPLAN_ID sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-MT_IDENTIFIER sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-CATEGORY sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_CONVOBJ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_ACPLAN sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_PORTION sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RECS_CALC sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_BYTES_CALC sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RECS_READ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_UC_PROBTAB_RECS sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_IN_PROCESS sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_FINISHED sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_FAILED sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-RUNTIME sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-RUNTIME_NET sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-TIMESTAMP_START sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-TIMESTAMP_END sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RT_READ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RT_TCNV_IN sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RT_SCNV sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RT_TCNV_OUT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RT_WRITE sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RECS_INS sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RECS_UPD sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-SUM_RECS_DEL sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RECS_CALC sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RECS_READ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_BYTES_CALC_GB sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_BYTES_CALC_MB sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_BYTES_CALC_KB sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_BYTES_CALC_B sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_STARTTIME sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_ENDTIME sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_RUNTIME sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_RUNTIME_NET sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RT_READ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RT_TCNV_IN sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RT_SCNV sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RT_TCNV_OUT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_SUM_RT_WRITE sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REL_RT_READ sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REL_RT_TCNV_IN sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REL_RT_SCNV sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REL_RT_TCNV_OUT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REL_RT_WRITE sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_THROUGHPUT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_NET_THROUGHPUT sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_DURATION sy-vline 
WA_DMC_RUN_INFO_EXT_ALV_GRID_STR-DISP_REM_DURATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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