ABAP Select data from SAP table GRPC_DS_S_CONTROL_TEST_STEP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRPC_DS_S_CONTROL_TEST_STEP
*  INTO TABLE @DATA(IT_GRPC_DS_S_CONTROL_TEST_STEP2).
*--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_GRPC_DS_S_CONTROL_TEST_STEP INDEX 1 INTO DATA(WA_GRPC_DS_S_CONTROL_TEST_STEP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRPC_DS_S_CONTROL_TEST_STEP>-OBJECT_KEY = 1.
<GRPC_DS_S_CONTROL_TEST_STEP>-PARENT_KEY = 1.
<GRPC_DS_S_CONTROL_TEST_STEP>-IS_EXPANDED = 1.
<GRPC_DS_S_CONTROL_TEST_STEP>-IS_LEAF = 1.
<GRPC_DS_S_CONTROL_TEST_STEP>-TREE_LEVEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRPC_DS_S_CONTROL_TEST_STEP-CN, sy-vline,
  WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_TL, sy-vline,
  WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_TEST_PLAN, sy-vline,
  WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_SEQ, sy-vline,
  WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_REV_SAMPLE, sy-vline,
  WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_FAILED_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRPC_DS_S_CONTROL_TEST_STEP 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_GRPC_DS_S_CONTROL_TEST_STEP 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_GRPC_DS_S_CONTROL_TEST_STEP INTO WA_GRPC_DS_S_CONTROL_TEST_STEP.


*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 V0_FAILED_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_FAILED_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_FAILED_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field V0_INIT_SAMPLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_INIT_SAMPLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRPC_DS_S_CONTROL_TEST_STEP-V0_INIT_SAMPLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INITIAL_SAMPLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GRPC_DS_S_CONTROL_TEST_STEP-INITIAL_SAMPLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRPC_DS_S_CONTROL_TEST_STEP-INITIAL_SAMPLE.
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_GRPC_DS_S_CONTROL_TEST_STEP_STR, 
OBJECT_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
IS_EXPANDED TYPE STRING,
IS_LEAF TYPE STRING,
TREE_LEVEL TYPE STRING,
CN TYPE STRING,
V0_TL TYPE STRING,
V0_TEST_PLAN TYPE STRING,
V0_SEQ TYPE STRING,
V0_REV_SAMPLE TYPE STRING,
V0_FAILED_NUM TYPE STRING,
V0_TRESULT TYPE STRING,
V0_IS_TEST TYPE STRING,
V0_REQUIRED TYPE STRING,
V0_FAIL_ENDS TYPE STRING,
V0_INIT_SAMPLE TYPE STRING,
V0_SAMPL_MTD TYPE STRING,
V0_TRESULT_T TYPE STRING,
V0_IS_TEST_T TYPE STRING,
V0_REQUIRED_T TYPE STRING,
V0_FAIL_ENDS_T TYPE STRING,
V0_SAMPL_MTD_T TYPE STRING,
V0_COMMENTS TYPE STRING,
V0_T TYPE STRING,
V0_D TYPE STRING,
STEP_INDEX_T TYPE STRING,
SEQNR TYPE STRING,
TESTPLAN_ID TYPE STRING,
NAME TYPE STRING,
DESCR TYPE STRING,
IS_TEST TYPE STRING,
IS_TEST_T TYPE STRING,
REQUIRED TYPE STRING,
REQUIRED_T TYPE STRING,
FAIL_TEST TYPE STRING,
FAIL_TEST_T TYPE STRING,
INITIAL_SAMPLE TYPE STRING,
SAMPLING_METHOD TYPE STRING,
SAMPLING_METHOD_T TYPE STRING,
REVISED_SAMPLE TYPE STRING,
NUM_FAILED TYPE STRING,
RESULT_TS TYPE STRING,
RESULT_TS_T TYPE STRING,
COMMENT_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRPC_DS_S_CONTROL_TEST_STEP_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_GRPC_DS_S_CONTROL_TEST_STEP_STR-OBJECT_KEY sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-PARENT_KEY sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-IS_EXPANDED sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-IS_LEAF sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-TREE_LEVEL sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-CN sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_TL sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_TEST_PLAN sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_SEQ sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_REV_SAMPLE sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_FAILED_NUM sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_TRESULT sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_IS_TEST sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_REQUIRED sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_FAIL_ENDS sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_INIT_SAMPLE sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_SAMPL_MTD sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_TRESULT_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_IS_TEST_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_REQUIRED_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_FAIL_ENDS_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_SAMPL_MTD_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_COMMENTS sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-V0_D sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-STEP_INDEX_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-SEQNR sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-TESTPLAN_ID sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-NAME sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-DESCR sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-IS_TEST sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-IS_TEST_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-REQUIRED sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-REQUIRED_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-FAIL_TEST sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-FAIL_TEST_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-INITIAL_SAMPLE sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-SAMPLING_METHOD sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-SAMPLING_METHOD_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-REVISED_SAMPLE sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-NUM_FAILED sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-RESULT_TS sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-RESULT_TS_T sy-vline 
WA_GRPC_DS_S_CONTROL_TEST_STEP_STR-COMMENT_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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