ABAP Select data from SAP table TZCOMP_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TZCOMP_INPUT
*  INTO TABLE @DATA(IT_TZCOMP_INPUT2).
*--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_TZCOMP_INPUT INDEX 1 INTO DATA(WA_TZCOMP_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TZCOMP_INPUT>-COMPONENT = 1.
<TZCOMP_INPUT>-DEPOT_ID = 1.
<TZCOMP_INPUT>-COMP_NAME = 1.
<TZCOMP_INPUT>-COMPONENT_VENDOR = 1.
<TZCOMP_INPUT>-SOFTWARE_COMPONENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TZCOMP_INPUT-WITH_TEST_SUITES, sy-vline,
  WA_TZCOMP_INPUT-WITH_LOCATIONS, sy-vline,
  WA_TZCOMP_INPUT-WITH_DATAPOOLS, sy-vline,
  WA_TZCOMP_INPUT-WITH_DEPLOYMENTS, sy-vline,
  WA_TZCOMP_INPUT-COMPONENT_FILTER, sy-vline,
  WA_TZCOMP_INPUT-RESPONSIBLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TZCOMP_INPUT 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_TZCOMP_INPUT 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_TZCOMP_INPUT INTO WA_TZCOMP_INPUT.


*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_TZCOMP_INPUT_STR, 
COMPONENT TYPE STRING,
DEPOT_ID TYPE STRING,
COMP_NAME TYPE STRING,
COMPONENT_VENDOR TYPE STRING,
SOFTWARE_COMPONENT TYPE STRING,
WITH_TEST_SUITES TYPE STRING,
WITH_LOCATIONS TYPE STRING,
WITH_DATAPOOLS TYPE STRING,
WITH_DEPLOYMENTS TYPE STRING,
COMPONENT_FILTER TYPE STRING,
RESPONSIBLE TYPE STRING,
TESTED_COMPONENTS TYPE STRING,
SUITE_FILTER TYPE STRING,
TYPE TYPE STRING,
KEYWORDS TYPE STRING,
PROPERTIES TYPE STRING,
RESPONSIBLE TYPE STRING,
NAME TYPE STRING,
LOCATION_FILTER TYPE STRING,
LOC_NAMES TYPE STRING,
TYPES TYPE STRING,
DATAPOOL_FILTER TYPE STRING,
LOC_NAMES TYPE STRING,
TYPES TYPE STRING,
DEPLOYMENT_FILTER TYPE STRING,
LOC_NAMES TYPE STRING,
TYPES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TZCOMP_INPUT_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_TZCOMP_INPUT_STR-COMPONENT sy-vline 
WA_TZCOMP_INPUT_STR-DEPOT_ID sy-vline 
WA_TZCOMP_INPUT_STR-COMP_NAME sy-vline 
WA_TZCOMP_INPUT_STR-COMPONENT_VENDOR sy-vline 
WA_TZCOMP_INPUT_STR-SOFTWARE_COMPONENT sy-vline 
WA_TZCOMP_INPUT_STR-WITH_TEST_SUITES sy-vline 
WA_TZCOMP_INPUT_STR-WITH_LOCATIONS sy-vline 
WA_TZCOMP_INPUT_STR-WITH_DATAPOOLS sy-vline 
WA_TZCOMP_INPUT_STR-WITH_DEPLOYMENTS sy-vline 
WA_TZCOMP_INPUT_STR-COMPONENT_FILTER sy-vline 
WA_TZCOMP_INPUT_STR-RESPONSIBLE sy-vline 
WA_TZCOMP_INPUT_STR-TESTED_COMPONENTS sy-vline 
WA_TZCOMP_INPUT_STR-SUITE_FILTER sy-vline 
WA_TZCOMP_INPUT_STR-TYPE sy-vline 
WA_TZCOMP_INPUT_STR-KEYWORDS sy-vline 
WA_TZCOMP_INPUT_STR-PROPERTIES sy-vline 
WA_TZCOMP_INPUT_STR-RESPONSIBLE sy-vline 
WA_TZCOMP_INPUT_STR-NAME sy-vline 
WA_TZCOMP_INPUT_STR-LOCATION_FILTER sy-vline 
WA_TZCOMP_INPUT_STR-LOC_NAMES sy-vline 
WA_TZCOMP_INPUT_STR-TYPES sy-vline 
WA_TZCOMP_INPUT_STR-DATAPOOL_FILTER sy-vline 
WA_TZCOMP_INPUT_STR-LOC_NAMES sy-vline 
WA_TZCOMP_INPUT_STR-TYPES sy-vline 
WA_TZCOMP_INPUT_STR-DEPLOYMENT_FILTER sy-vline 
WA_TZCOMP_INPUT_STR-LOC_NAMES sy-vline 
WA_TZCOMP_INPUT_STR-TYPES sy-vline      INTO ld_text SEPARATED BY SPACE.

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