ABAP Select data from SAP table CNV_10020_TRACK_ALV 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 CNV_10020_TRACK_ALV 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 CNV_10020_TRACK_ALV. 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 CNV_10020_TRACK_ALV 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_CNV_10020_TRACK_ALV TYPE STANDARD TABLE OF CNV_10020_TRACK_ALV,
      WA_CNV_10020_TRACK_ALV TYPE CNV_10020_TRACK_ALV,
      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: <CNV_10020_TRACK_ALV> TYPE CNV_10020_TRACK_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_10020_TRACK_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_10020_TRACK_ALV
  INTO TABLE IT_CNV_10020_TRACK_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_10020_TRACK_ALV
*  INTO TABLE @DATA(IT_CNV_10020_TRACK_ALV2).
*--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_CNV_10020_TRACK_ALV INDEX 1 INTO DATA(WA_CNV_10020_TRACK_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_10020_TRACK_ALV ASSIGNING <CNV_10020_TRACK_ALV>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_10020_TRACK_ALV>-TABNAME = 1.
<CNV_10020_TRACK_ALV>-TASKID = 1.
<CNV_10020_TRACK_ALV>-SRCTRG = 1.
<CNV_10020_TRACK_ALV>-PATHID = 1.
<CNV_10020_TRACK_ALV>-PATHTYPE = 1.
ENDLOOP.

LOOP AT IT_CNV_10020_TRACK_ALV INTO WA_CNV_10020_TRACK_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_10020_TRACK_ALV-DTOBJ, sy-vline,
WA_CNV_10020_TRACK_ALV-DTVAL, sy-vline,
WA_CNV_10020_TRACK_ALV-NOTREL, sy-vline,
WA_CNV_10020_TRACK_ALV-DTRES, sy-vline,
WA_CNV_10020_TRACK_ALV-ENTRIES, sy-vline,
WA_CNV_10020_TRACK_ALV-COMPLETED, sy-vline.
ENDLOOP. *Add any further fields from structure WA_CNV_10020_TRACK_ALV 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_CNV_10020_TRACK_ALV 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_CNV_10020_TRACK_ALV INTO WA_CNV_10020_TRACK_ALV. *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 CNVO6, internal->external for field DTRES CALL FUNCTION 'CONVERSION_EXIT_CNVO6_OUTPUT' EXPORTING input = WA_CNV_10020_TRACK_ALV-DTRES IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_CNV_10020_TRACK_ALV-DTRES.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CNVO7, internal->external for field COMPLETED CALL FUNCTION 'CONVERSION_EXIT_CNVO7_OUTPUT' EXPORTING input = WA_CNV_10020_TRACK_ALV-COMPLETED IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_CNV_10020_TRACK_ALV-COMPLETED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CNVO5, internal->external for field DURATION CALL FUNCTION 'CONVERSION_EXIT_CNVO5_OUTPUT' EXPORTING input = WA_CNV_10020_TRACK_ALV-DURATION IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_CNV_10020_TRACK_ALV-DURATION.
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_CNV_10020_TRACK_ALV_STR,
TABNAME TYPE STRING,
TASKID TYPE STRING,
SRCTRG TYPE STRING,
PATHID TYPE STRING,
PATHTYPE TYPE STRING,
DTOBJ TYPE STRING,
DTVAL TYPE STRING,
NOTREL TYPE STRING,
DTRES TYPE STRING,
ENTRIES TYPE STRING,
COMPLETED TYPE STRING,
DURATION_S TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
DURATION TYPE STRING,END OF T_EKKO_STR. DATA: WA_CNV_10020_TRACK_ALV_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_CNV_10020_TRACK_ALV_STR-TABNAME sy-vline
WA_CNV_10020_TRACK_ALV_STR-TASKID sy-vline
WA_CNV_10020_TRACK_ALV_STR-SRCTRG sy-vline
WA_CNV_10020_TRACK_ALV_STR-PATHID sy-vline
WA_CNV_10020_TRACK_ALV_STR-PATHTYPE sy-vline
WA_CNV_10020_TRACK_ALV_STR-DTOBJ sy-vline
WA_CNV_10020_TRACK_ALV_STR-DTVAL sy-vline
WA_CNV_10020_TRACK_ALV_STR-NOTREL sy-vline
WA_CNV_10020_TRACK_ALV_STR-DTRES sy-vline
WA_CNV_10020_TRACK_ALV_STR-ENTRIES sy-vline
WA_CNV_10020_TRACK_ALV_STR-COMPLETED sy-vline
WA_CNV_10020_TRACK_ALV_STR-DURATION_S sy-vline
WA_CNV_10020_TRACK_ALV_STR-START_DATE sy-vline
WA_CNV_10020_TRACK_ALV_STR-START_TIME sy-vline
WA_CNV_10020_TRACK_ALV_STR-END_DATE sy-vline
WA_CNV_10020_TRACK_ALV_STR-END_TIME sy-vline
WA_CNV_10020_TRACK_ALV_STR-DURATION sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.