ABAP Select data from SAP table ECATT_CAT_PINGRESPONSE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECATT_CAT_PINGRESPONSE
*  INTO TABLE @DATA(IT_ECATT_CAT_PINGRESPONSE2).
*--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_ECATT_CAT_PINGRESPONSE INDEX 1 INTO DATA(WA_ECATT_CAT_PINGRESPONSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECATT_CAT_PINGRESPONSE>-CONTROLLER = 1.
<ECATT_CAT_PINGRESPONSE>-SYSINFO = 1.
<ECATT_CAT_PINGRESPONSE>-CONTROLLER = 1.
<ECATT_CAT_PINGRESPONSE>-SYSTEM = 1.
<ECATT_CAT_PINGRESPONSE>-MAND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECATT_CAT_PINGRESPONSE-ASPRA, sy-vline,
  WA_ECATT_CAT_PINGRESPONSE-SNAME, sy-vline,
  WA_ECATT_CAT_PINGRESPONSE-CATTOK, sy-vline,
  WA_ECATT_CAT_PINGRESPONSE-SAPRL, sy-vline,
  WA_ECATT_CAT_PINGRESPONSE-HOST, sy-vline,
  WA_ECATT_CAT_PINGRESPONSE-OPSYS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECATT_CAT_PINGRESPONSE 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_ECATT_CAT_PINGRESPONSE 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_ECATT_CAT_PINGRESPONSE INTO WA_ECATT_CAT_PINGRESPONSE.


*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_ECATT_CAT_PINGRESPONSE_STR, 
CONTROLLER TYPE STRING,
SYSINFO TYPE STRING,
CONTROLLER TYPE STRING,
SYSTEM TYPE STRING,
MAND TYPE STRING,
ASPRA TYPE STRING,
SNAME TYPE STRING,
CATTOK TYPE STRING,
SAPRL TYPE STRING,
HOST TYPE STRING,
OPSYS TYPE STRING,
DBSYS TYPE STRING,
DATEX TYPE STRING,
DCPFM TYPE STRING,
MSNAME2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECATT_CAT_PINGRESPONSE_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_ECATT_CAT_PINGRESPONSE_STR-CONTROLLER sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-SYSINFO sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-CONTROLLER sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-SYSTEM sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-MAND sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-ASPRA sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-SNAME sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-CATTOK sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-SAPRL sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-HOST sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-OPSYS sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-DBSYS sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-DATEX sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-DCPFM sy-vline 
WA_ECATT_CAT_PINGRESPONSE_STR-MSNAME2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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