ABAP Select data from SAP table MPO_CCMON_ALERT_STORAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPO_CCMON_ALERT_STORAGE
*  INTO TABLE @DATA(IT_MPO_CCMON_ALERT_STORAGE2).
*--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_MPO_CCMON_ALERT_STORAGE INDEX 1 INTO DATA(WA_MPO_CCMON_ALERT_STORAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPO_CCMON_ALERT_STORAGE>-UNAME = 1.
<MPO_CCMON_ALERT_STORAGE>-RULE_ID = 1.
<MPO_CCMON_ALERT_STORAGE>-RULE_INVALID = 1.
<MPO_CCMON_ALERT_STORAGE>-VALUE1 = 1.
<MPO_CCMON_ALERT_STORAGE>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPO_CCMON_ALERT_STORAGE-WAERS, sy-vline,
  WA_MPO_CCMON_ALERT_STORAGE-VALUE2, sy-vline,
  WA_MPO_CCMON_ALERT_STORAGE-OBJNR, sy-vline,
  WA_MPO_CCMON_ALERT_STORAGE-OBJNR_TO, sy-vline,
  WA_MPO_CCMON_ALERT_STORAGE-SETID, sy-vline,
  WA_MPO_CCMON_ALERT_STORAGE-KSTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPO_CCMON_ALERT_STORAGE 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_MPO_CCMON_ALERT_STORAGE 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_MPO_CCMON_ALERT_STORAGE INTO WA_MPO_CCMON_ALERT_STORAGE.


*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 KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPO_CCMON_ALERT_STORAGE-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_CCMON_ALERT_STORAGE-KSTAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MPO_CCMON_ALERT_STORAGE-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_CCMON_ALERT_STORAGE-GJAHR.
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_MPO_CCMON_ALERT_STORAGE_STR, 
UNAME TYPE STRING,
RULE_ID TYPE STRING,
RULE_INVALID TYPE STRING,
VALUE1 TYPE STRING,
KOKRS TYPE STRING,
WAERS TYPE STRING,
VALUE2 TYPE STRING,
OBJNR TYPE STRING,
OBJNR_TO TYPE STRING,
SETID TYPE STRING,
KSTAR TYPE STRING,
KSTAR_TO TYPE STRING,
KAGRU TYPE STRING,
POPER TYPE STRING,
GJAHR TYPE STRING,
RED TYPE STRING,
VAL1_001 TYPE STRING,
VAL1_002 TYPE STRING,
VAL1_003 TYPE STRING,
VAL1_004 TYPE STRING,
VAL1_005 TYPE STRING,
VAL1_006 TYPE STRING,
VAL1_007 TYPE STRING,
VAL1_008 TYPE STRING,
VAL1_009 TYPE STRING,
VAL1_010 TYPE STRING,
VAL1_011 TYPE STRING,
VAL1_012 TYPE STRING,
VAL1_013 TYPE STRING,
VAL1_014 TYPE STRING,
VAL1_015 TYPE STRING,
VAL1_016 TYPE STRING,
VAL2_001 TYPE STRING,
VAL2_002 TYPE STRING,
VAL2_003 TYPE STRING,
VAL2_004 TYPE STRING,
VAL2_005 TYPE STRING,
VAL2_006 TYPE STRING,
VAL2_007 TYPE STRING,
VAL2_008 TYPE STRING,
VAL2_009 TYPE STRING,
VAL2_010 TYPE STRING,
VAL2_011 TYPE STRING,
VAL2_012 TYPE STRING,
VAL2_013 TYPE STRING,
VAL2_014 TYPE STRING,
VAL2_015 TYPE STRING,
VAL2_016 TYPE STRING,
PERBL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPO_CCMON_ALERT_STORAGE_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_MPO_CCMON_ALERT_STORAGE_STR-UNAME sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-RULE_ID sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-RULE_INVALID sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VALUE1 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-KOKRS sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-WAERS sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VALUE2 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-OBJNR sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-OBJNR_TO sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-SETID sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-KSTAR sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-KSTAR_TO sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-KAGRU sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-POPER sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-GJAHR sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-RED sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_001 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_002 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_003 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_004 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_005 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_006 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_007 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_008 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_009 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_010 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_011 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_012 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_013 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_014 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_015 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL1_016 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_001 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_002 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_003 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_004 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_005 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_006 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_007 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_008 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_009 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_010 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_011 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_012 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_013 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_014 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_015 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-VAL2_016 sy-vline 
WA_MPO_CCMON_ALERT_STORAGE_STR-PERBL sy-vline      INTO ld_text SEPARATED BY SPACE.

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