ABAP Select data from SAP table TREXS_INDEX_INFO_TEXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TREXS_INDEX_INFO_TEXT
*  INTO TABLE @DATA(IT_TREXS_INDEX_INFO_TEXT2).
*--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_TREXS_INDEX_INFO_TEXT INDEX 1 INTO DATA(WA_TREXS_INDEX_INFO_TEXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TREXS_INDEX_INFO_TEXT>-INDEX_ID = 1.
<TREXS_INDEX_INFO_TEXT>-INDEX_STATE = 1.
<TREXS_INDEX_INFO_TEXT>-INDEX_TYPE = 1.
<TREXS_INDEX_INFO_TEXT>-PHYSICAL_INDEXES = 1.
<TREXS_INDEX_INFO_TEXT>-LOGICAL_INDEXES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TREXS_INDEX_INFO_TEXT-DESCRIPTION, sy-vline,
  WA_TREXS_INDEX_INFO_TEXT-LANGUAGE, sy-vline,
  WA_TREXS_INDEX_INFO_TEXT-LAST_INDEXING, sy-vline,
  WA_TREXS_INDEX_INFO_TEXT-LAST_OPTIMIZE, sy-vline,
  WA_TREXS_INDEX_INFO_TEXT-LAST_DELTA_MERGE, sy-vline,
  WA_TREXS_INDEX_INFO_TEXT-SEARCHABLE_DOCS_TOTAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TREXS_INDEX_INFO_TEXT 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_TREXS_INDEX_INFO_TEXT 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_TREXS_INDEX_INFO_TEXT INTO WA_TREXS_INDEX_INFO_TEXT.


*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_TREXS_INDEX_INFO_TEXT_STR, 
INDEX_ID TYPE STRING,
INDEX_STATE TYPE STRING,
INDEX_TYPE TYPE STRING,
PHYSICAL_INDEXES TYPE STRING,
LOGICAL_INDEXES TYPE STRING,
DESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
LAST_INDEXING TYPE STRING,
LAST_OPTIMIZE TYPE STRING,
LAST_DELTA_MERGE TYPE STRING,
SEARCHABLE_DOCS_TOTAL TYPE STRING,
SEARCHABLE_DOCS_MAIN TYPE STRING,
SEARCHABLE_DOCS_DELTA TYPE STRING,
SEARCHABLE_DOCS_DELTA2 TYPE STRING,
OPTIMIZABLE_DOCS_NEW TYPE STRING,
OPTIMIZABLE_DOCS_UPDATE TYPE STRING,
OPTIMIZABLE_DOCS_DELETE TYPE STRING,
MEMORY_SIZE_TOTAL TYPE STRING,
MEMORY_SIZE_SE TYPE STRING,
MEMORY_SIZE_AE TYPE STRING,
MEMORY_SIZE_TM TYPE STRING,
DISK_FREE_SPACE TYPE STRING,
DISK_SIZE_TOTAL TYPE STRING,
DISK_SIZE_SE TYPE STRING,
DISK_SIZE_AE TYPE STRING,
DISK_SIZE_TM TYPE STRING,
DELTA_INDEX_DISK_SIZE_TOTAL TYPE STRING,
DELTA_INDEX_DISK_SIZE_SE TYPE STRING,
DELTA_INDEX_DISK_SIZE_AE TYPE STRING,
DELTA_INDEX_DISK_SIZE_TM TYPE STRING,
NUMBER_OF_TERMS TYPE STRING,
DELTA_IS_LOADED TYPE STRING,
SIZE_FOR_DELTA_INDEX TYPE STRING,
USE_TEMPORARY_DELTA_INDEXES TYPE STRING,
RETURN_CODE TYPE STRING,
RETURN_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TREXS_INDEX_INFO_TEXT_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_TREXS_INDEX_INFO_TEXT_STR-INDEX_ID sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-INDEX_STATE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-INDEX_TYPE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-PHYSICAL_INDEXES sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-LOGICAL_INDEXES sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DESCRIPTION sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-LANGUAGE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-LAST_INDEXING sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-LAST_OPTIMIZE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-LAST_DELTA_MERGE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-SEARCHABLE_DOCS_TOTAL sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-SEARCHABLE_DOCS_MAIN sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-SEARCHABLE_DOCS_DELTA sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-SEARCHABLE_DOCS_DELTA2 sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-OPTIMIZABLE_DOCS_NEW sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-OPTIMIZABLE_DOCS_UPDATE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-OPTIMIZABLE_DOCS_DELETE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-MEMORY_SIZE_TOTAL sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-MEMORY_SIZE_SE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-MEMORY_SIZE_AE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-MEMORY_SIZE_TM sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DISK_FREE_SPACE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DISK_SIZE_TOTAL sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DISK_SIZE_SE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DISK_SIZE_AE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DISK_SIZE_TM sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DELTA_INDEX_DISK_SIZE_TOTAL sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DELTA_INDEX_DISK_SIZE_SE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DELTA_INDEX_DISK_SIZE_AE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DELTA_INDEX_DISK_SIZE_TM sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-NUMBER_OF_TERMS sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-DELTA_IS_LOADED sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-SIZE_FOR_DELTA_INDEX sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-USE_TEMPORARY_DELTA_INDEXES sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-RETURN_CODE sy-vline 
WA_TREXS_INDEX_INFO_TEXT_STR-RETURN_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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