ABAP Select data from SAP table ESH_S_TREX_INDEX_METADATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_S_TREX_INDEX_METADATA
*  INTO TABLE @DATA(IT_ESH_S_TREX_INDEX_METADATA2).
*--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_ESH_S_TREX_INDEX_METADATA INDEX 1 INTO DATA(WA_ESH_S_TREX_INDEX_METADATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_S_TREX_INDEX_METADATA>-TREX_INDEX_ID = 1.
<ESH_S_TREX_INDEX_METADATA>-OBJECT_TYPE = 1.
<ESH_S_TREX_INDEX_METADATA>-NODE_NAME = 1.
<ESH_S_TREX_INDEX_METADATA>-DESCRIPTION = 1.
<ESH_S_TREX_INDEX_METADATA>-INDEX_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_S_TREX_INDEX_METADATA-TREX_COMPONENT_DESCRIPTION, sy-vline,
  WA_ESH_S_TREX_INDEX_METADATA-TREX_ATTRIBUTE_DEFINITION, sy-vline,
  WA_ESH_S_TREX_INDEX_METADATA-HDBT_ATTRIBUTE_DEFINITION, sy-vline,
  WA_ESH_S_TREX_INDEX_METADATA-TREX_KEY_ATTRIBUTES, sy-vline,
  WA_ESH_S_TREX_INDEX_METADATA-DATA_DICTIONARY_FIELDS, sy-vline,
  WA_ESH_S_TREX_INDEX_METADATA-TREX_ATTRIBUTE_RANGES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_S_TREX_INDEX_METADATA 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_ESH_S_TREX_INDEX_METADATA 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_ESH_S_TREX_INDEX_METADATA INTO WA_ESH_S_TREX_INDEX_METADATA.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_S_TREX_INDEX_METADATA-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_S_TREX_INDEX_METADATA-LOGSYS.
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_ESH_S_TREX_INDEX_METADATA_STR, 
TREX_INDEX_ID TYPE STRING,
OBJECT_TYPE TYPE STRING,
NODE_NAME TYPE STRING,
DESCRIPTION TYPE STRING,
INDEX_TYPE TYPE STRING,
TREX_COMPONENT_DESCRIPTION TYPE STRING,
TREX_ATTRIBUTE_DEFINITION TYPE STRING,
HDBT_ATTRIBUTE_DEFINITION TYPE STRING,
TREX_KEY_ATTRIBUTES TYPE STRING,
DATA_DICTIONARY_FIELDS TYPE STRING,
TREX_ATTRIBUTE_RANGES TYPE STRING,
SEMANTICS TYPE STRING,
LANGUAGE_ID_FIELD TYPE STRING,
SEARCHABLE_FILE_FIELD TYPE STRING,
AUTH TYPE STRING,
RESULT_TABLE TYPE STRING,
CHECK_ID TYPE STRING,
OBJECT_ABAP TYPE STRING,
OBJECT_ESH TYPE STRING,
FIXED_VALUES TYPE STRING,
DYNAMIC_VALUES TYPE STRING,
PATH_STEPS TYPE STRING,
DATA_PROVIDER_FOR_INDEX TYPE STRING,
JOINATTR_AUTHIDX TYPE STRING,
FILL_USER_AUTH TYPE STRING,
ADMIN TYPE STRING,
INDEXING_MODE TYPE STRING,
SINGLE_NODE_INDEXING_LOGIC TYPE STRING,
TEMPLATE_TYPE TYPE STRING,
APPEND_ADDITIONAL_ESH_ATTRS TYPE STRING,
DATA_PROVIDER TYPE STRING,
LOGSYS TYPE STRING,
EXT_SYS_ID TYPE STRING,
SOFTWARE_COMP TYPE STRING,
LANGUAGE TYPE STRING,
LANGUAGE_DEPENDENT_ATTRS TYPE STRING,
LANGUAGE_INDEPENDENT_ATTRS TYPE STRING,
DEFAULT_LANGUAGE TYPE STRING,
TREX_LANGUAGES_FOR_LANG_INDEX TYPE STRING,
DBTAB_MAPPING TYPE STRING,
NODE_USING_APPTAB TYPE STRING,
IS_VIRTUAL TYPE STRING,
REFERENCED_OBJ TYPE STRING,
REFERENCED_NODE TYPE STRING,
HDB_DBSCHEMA TYPE STRING,
HDB_DBTABNAME TYPE STRING,
IS_DOMAINBASED TYPE STRING,
ATTR_DOMVALUE_L TYPE STRING,
ATTR_DOMALANGU TYPE STRING,
ATTR_VALUE_TEXT TYPE STRING,
IS_CROSSCLIENT TYPE STRING,
CLIENT_ATTR TYPE STRING,
HAS_CONSTRAINTS TYPE STRING,
HAS_CUSTOM_DBTAB TYPE STRING,
HAS_DATAAGING TYPE STRING,
BLUEGREEN_ACTIVE TYPE STRING,
DDIC_ACCESS_SCHEMA TYPE STRING,
DDIC_ACCESS_TABNAME TYPE STRING,
ATR_ACTIVE TYPE STRING,
REPL_SCHEMA TYPE STRING,
CONSTRAINTS TYPE STRING,
CONFIGURATION_ID TYPE STRING,
FTX_ATTRIBUTES TYPE STRING,
CALC_ATTRIBUTES TYPE STRING,
BINQ_TAB_MAPPING TYPE STRING,
BINQ_ID TYPE STRING,
BINQUEUE_TABNAME TYPE STRING,
BINQUEUE_SCHEMA TYPE STRING,
REF_NODE_TABNAME TYPE STRING,
REF_NODE_SCHEMA TYPE STRING,
REF_ATTR TYPE STRING,
REF_ATTR_TYPE TYPE STRING,
BINTEXT_ATTR TYPE STRING,
SUPPORTED_LANGUAGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_S_TREX_INDEX_METADATA_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_ESH_S_TREX_INDEX_METADATA_STR-TREX_INDEX_ID sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-OBJECT_TYPE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-NODE_NAME sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DESCRIPTION sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-INDEX_TYPE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TREX_COMPONENT_DESCRIPTION sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TREX_ATTRIBUTE_DEFINITION sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HDBT_ATTRIBUTE_DEFINITION sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TREX_KEY_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DATA_DICTIONARY_FIELDS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TREX_ATTRIBUTE_RANGES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-SEMANTICS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-LANGUAGE_ID_FIELD sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-SEARCHABLE_FILE_FIELD sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-AUTH sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-RESULT_TABLE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-CHECK_ID sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-OBJECT_ABAP sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-OBJECT_ESH sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-FIXED_VALUES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DYNAMIC_VALUES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-PATH_STEPS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DATA_PROVIDER_FOR_INDEX sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-JOINATTR_AUTHIDX sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-FILL_USER_AUTH sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-ADMIN sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-INDEXING_MODE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-SINGLE_NODE_INDEXING_LOGIC sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TEMPLATE_TYPE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-APPEND_ADDITIONAL_ESH_ATTRS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DATA_PROVIDER sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-LOGSYS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-EXT_SYS_ID sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-SOFTWARE_COMP sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-LANGUAGE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-LANGUAGE_DEPENDENT_ATTRS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-LANGUAGE_INDEPENDENT_ATTRS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DEFAULT_LANGUAGE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-TREX_LANGUAGES_FOR_LANG_INDEX sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DBTAB_MAPPING sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-NODE_USING_APPTAB sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-IS_VIRTUAL sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REFERENCED_OBJ sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REFERENCED_NODE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HDB_DBSCHEMA sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HDB_DBTABNAME sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-IS_DOMAINBASED sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-ATTR_DOMVALUE_L sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-ATTR_DOMALANGU sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-ATTR_VALUE_TEXT sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-IS_CROSSCLIENT sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-CLIENT_ATTR sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HAS_CONSTRAINTS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HAS_CUSTOM_DBTAB sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-HAS_DATAAGING sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BLUEGREEN_ACTIVE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DDIC_ACCESS_SCHEMA sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-DDIC_ACCESS_TABNAME sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-ATR_ACTIVE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REPL_SCHEMA sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-CONSTRAINTS sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-CONFIGURATION_ID sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-FTX_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-CALC_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BINQ_TAB_MAPPING sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BINQ_ID sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BINQUEUE_TABNAME sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BINQUEUE_SCHEMA sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REF_NODE_TABNAME sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REF_NODE_SCHEMA sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REF_ATTR sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-REF_ATTR_TYPE sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-BINTEXT_ATTR sy-vline 
WA_ESH_S_TREX_INDEX_METADATA_STR-SUPPORTED_LANGUAGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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