ABAP Select data from SAP table /SDF/CCMS_ALERT_HISTORY into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/CCMS_ALERT_HISTORY
*  INTO TABLE @DATA(IT_/SDF/CCMS_ALERT_HISTORY2).
*--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_/SDF/CCMS_ALERT_HISTORY INDEX 1 INTO DATA(WA_/SDF/CCMS_ALERT_HISTORY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/CCMS_ALERT_HISTORY ASSIGNING </SDF/CCMS_ALERT_HISTORY>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/CCMS_ALERT_HISTORY>-MTKEY = 1.
</SDF/CCMS_ALERT_HISTORY>-MTSYSID = 1.
</SDF/CCMS_ALERT_HISTORY>-MTMCNAME = 1.
</SDF/CCMS_ALERT_HISTORY>-MTUID = 1.
</SDF/CCMS_ALERT_HISTORY>-ALDATE = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/CCMS_ALERT_HISTORY-ALTIME, sy-vline,
WA_/SDF/CCMS_ALERT_HISTORY-ALVALUE, sy-vline,
WA_/SDF/CCMS_ALERT_HISTORY-ALSEVERITY, sy-vline,
WA_/SDF/CCMS_ALERT_HISTORY-ALSTATUS, sy-vline,
WA_/SDF/CCMS_ALERT_HISTORY-MSGCLASS, sy-vline,
WA_/SDF/CCMS_ALERT_HISTORY-MSGID, sy-vline.
ENDLOOP. *Add any further fields from structure WA_/SDF/CCMS_ALERT_HISTORY 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_/SDF/CCMS_ALERT_HISTORY 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_/SDF/CCMS_ALERT_HISTORY INTO WA_/SDF/CCMS_ALERT_HISTORY. *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_/SDF/CCMS_ALERT_HISTORY_STR,
MTKEY TYPE STRING,
MTSYSID TYPE STRING,
MTMCNAME TYPE STRING,
MTUID TYPE STRING,
ALDATE TYPE STRING,
ALTIME TYPE STRING,
ALVALUE TYPE STRING,
ALSEVERITY TYPE STRING,
ALSTATUS TYPE STRING,
MSGCLASS TYPE STRING,
MSGID TYPE STRING,
MSGARG1 TYPE STRING,
MSGARG2 TYPE STRING,
MSGARG3 TYPE STRING,
MSGARG4 TYPE STRING,
ALMSG TYPE STRING,END OF T_EKKO_STR. DATA: WA_/SDF/CCMS_ALERT_HISTORY_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_/SDF/CCMS_ALERT_HISTORY_STR-MTKEY sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MTSYSID sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MTMCNAME sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MTUID sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALDATE sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALTIME sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALVALUE sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALSEVERITY sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALSTATUS sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGCLASS sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGID sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGARG1 sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGARG2 sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGARG3 sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-MSGARG4 sy-vline
WA_/SDF/CCMS_ALERT_HISTORY_STR-ALMSG sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.