ABAP Select data from SAP table SHMM_TRC_VARIANT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SHMM_TRC_VARIANT
*  INTO TABLE @DATA(IT_SHMM_TRC_VARIANT2).
*--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_SHMM_TRC_VARIANT INDEX 1 INTO DATA(WA_SHMM_TRC_VARIANT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SHMM_TRC_VARIANT>-DEF_NAME = 1.
<SHMM_TRC_VARIANT>-DEF_USER = 1.
<SHMM_TRC_VARIANT>-DEF_DATE = 1.
<SHMM_TRC_VARIANT>-DEF_TIME = 1.
<SHMM_TRC_VARIANT>-DEF_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SHMM_TRC_VARIANT-TRC_ACTIVE, sy-vline,
  WA_SHMM_TRC_VARIANT-TRC_AREA, sy-vline,
  WA_SHMM_TRC_VARIANT-TRC_USER, sy-vline,
  WA_SHMM_TRC_VARIANT-TRC_CLASS, sy-vline,
  WA_SHMM_TRC_VARIANT-GET_ROOT, sy-vline,
  WA_SHMM_TRC_VARIANT-ATTACH_FOR_READ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SHMM_TRC_VARIANT 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_SHMM_TRC_VARIANT 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_SHMM_TRC_VARIANT INTO WA_SHMM_TRC_VARIANT.


*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_SHMM_TRC_VARIANT_STR, 
DEF_NAME TYPE STRING,
DEF_USER TYPE STRING,
DEF_DATE TYPE STRING,
DEF_TIME TYPE STRING,
DEF_GUID TYPE STRING,
TRC_ACTIVE TYPE STRING,
TRC_AREA TYPE STRING,
TRC_USER TYPE STRING,
TRC_CLASS TYPE STRING,
GET_ROOT TYPE STRING,
ATTACH_FOR_READ TYPE STRING,
ATTACH_FOR_WRITE TYPE STRING,
ATTACH_FOR_UPD TYPE STRING,
DETACH_AREA TYPE STRING,
INVALIDATE_INST TYPE STRING,
INVALIDATE_AREA TYPE STRING,
PROPAGATE_INST TYPE STRING,
PROPAGATE_AREA TYPE STRING,
FREE_INSTANCE TYPE STRING,
FREE_AREA TYPE STRING,
GET_INSTANCE_INF TYPE STRING,
BUILD TYPE STRING,
SET_ROOT TYPE STRING,
DETACH_ALL_AREAS TYPE STRING,
MULTI_ATTACH TYPE STRING,
DETACH TYPE STRING,
DETACH_COMMIT TYPE STRING,
DETACH_ROLLBACK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SHMM_TRC_VARIANT_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_SHMM_TRC_VARIANT_STR-DEF_NAME sy-vline 
WA_SHMM_TRC_VARIANT_STR-DEF_USER sy-vline 
WA_SHMM_TRC_VARIANT_STR-DEF_DATE sy-vline 
WA_SHMM_TRC_VARIANT_STR-DEF_TIME sy-vline 
WA_SHMM_TRC_VARIANT_STR-DEF_GUID sy-vline 
WA_SHMM_TRC_VARIANT_STR-TRC_ACTIVE sy-vline 
WA_SHMM_TRC_VARIANT_STR-TRC_AREA sy-vline 
WA_SHMM_TRC_VARIANT_STR-TRC_USER sy-vline 
WA_SHMM_TRC_VARIANT_STR-TRC_CLASS sy-vline 
WA_SHMM_TRC_VARIANT_STR-GET_ROOT sy-vline 
WA_SHMM_TRC_VARIANT_STR-ATTACH_FOR_READ sy-vline 
WA_SHMM_TRC_VARIANT_STR-ATTACH_FOR_WRITE sy-vline 
WA_SHMM_TRC_VARIANT_STR-ATTACH_FOR_UPD sy-vline 
WA_SHMM_TRC_VARIANT_STR-DETACH_AREA sy-vline 
WA_SHMM_TRC_VARIANT_STR-INVALIDATE_INST sy-vline 
WA_SHMM_TRC_VARIANT_STR-INVALIDATE_AREA sy-vline 
WA_SHMM_TRC_VARIANT_STR-PROPAGATE_INST sy-vline 
WA_SHMM_TRC_VARIANT_STR-PROPAGATE_AREA sy-vline 
WA_SHMM_TRC_VARIANT_STR-FREE_INSTANCE sy-vline 
WA_SHMM_TRC_VARIANT_STR-FREE_AREA sy-vline 
WA_SHMM_TRC_VARIANT_STR-GET_INSTANCE_INF sy-vline 
WA_SHMM_TRC_VARIANT_STR-BUILD sy-vline 
WA_SHMM_TRC_VARIANT_STR-SET_ROOT sy-vline 
WA_SHMM_TRC_VARIANT_STR-DETACH_ALL_AREAS sy-vline 
WA_SHMM_TRC_VARIANT_STR-MULTI_ATTACH sy-vline 
WA_SHMM_TRC_VARIANT_STR-DETACH sy-vline 
WA_SHMM_TRC_VARIANT_STR-DETACH_COMMIT sy-vline 
WA_SHMM_TRC_VARIANT_STR-DETACH_ROLLBACK sy-vline      INTO ld_text SEPARATED BY SPACE.

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