ABAP Select data from SAP table /GC1/STR_DDIC_TTYP_METADATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /GC1/STR_DDIC_TTYP_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 /GC1/STR_DDIC_TTYP_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 /GC1/STR_DDIC_TTYP_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_/GC1/STR_DDIC_TTYP_METADATA TYPE STANDARD TABLE OF /GC1/STR_DDIC_TTYP_METADATA,
      WA_/GC1/STR_DDIC_TTYP_METADATA TYPE /GC1/STR_DDIC_TTYP_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: </GC1/STR_DDIC_TTYP_METADATA> TYPE /GC1/STR_DDIC_TTYP_METADATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/GC1/STR_DDIC_TTYP_METADATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /GC1/STR_DDIC_TTYP_METADATA
  INTO TABLE IT_/GC1/STR_DDIC_TTYP_METADATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /GC1/STR_DDIC_TTYP_METADATA
*  INTO TABLE @DATA(IT_/GC1/STR_DDIC_TTYP_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_/GC1/STR_DDIC_TTYP_METADATA INDEX 1 INTO DATA(WA_/GC1/STR_DDIC_TTYP_METADATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/GC1/STR_DDIC_TTYP_METADATA ASSIGNING </GC1/STR_DDIC_TTYP_METADATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</GC1/STR_DDIC_TTYP_METADATA>-NAME = 1.
</GC1/STR_DDIC_TTYP_METADATA>-GOTSTATE = 1.
</GC1/STR_DDIC_TTYP_METADATA>-DD40V_WA = 1.
</GC1/STR_DDIC_TTYP_METADATA>-TYPENAME = 1.
</GC1/STR_DDIC_TTYP_METADATA>-DDLANGUAGE = 1.

ENDLOOP.

LOOP AT IT_/GC1/STR_DDIC_TTYP_METADATA INTO WA_/GC1/STR_DDIC_TTYP_METADATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/GC1/STR_DDIC_TTYP_METADATA-ROWTYPE, sy-vline,
  WA_/GC1/STR_DDIC_TTYP_METADATA-ROWKIND, sy-vline,
  WA_/GC1/STR_DDIC_TTYP_METADATA-DATATYPE, sy-vline,
  WA_/GC1/STR_DDIC_TTYP_METADATA-LENG, sy-vline,
  WA_/GC1/STR_DDIC_TTYP_METADATA-DECIMALS, sy-vline,
  WA_/GC1/STR_DDIC_TTYP_METADATA-ACCESSMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/GC1/STR_DDIC_TTYP_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_/GC1/STR_DDIC_TTYP_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_/GC1/STR_DDIC_TTYP_METADATA INTO WA_/GC1/STR_DDIC_TTYP_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 ISOLA, internal->external for field DDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/GC1/STR_DDIC_TTYP_METADATA-DDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GC1/STR_DDIC_TTYP_METADATA-DDLANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/GC1/STR_DDIC_TTYP_METADATA-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GC1/STR_DDIC_TTYP_METADATA-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field CTDATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/GC1/STR_DDIC_TTYP_METADATA-CTDATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GC1/STR_DDIC_TTYP_METADATA-CTDATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/GC1/STR_DDIC_TTYP_METADATA-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/GC1/STR_DDIC_TTYP_METADATA-MASTERLANG.
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_/GC1/STR_DDIC_TTYP_METADATA_STR, 
NAME TYPE STRING,
GOTSTATE TYPE STRING,
DD40V_WA TYPE STRING,
TYPENAME TYPE STRING,
DDLANGUAGE TYPE STRING,
ROWTYPE TYPE STRING,
ROWKIND TYPE STRING,
DATATYPE TYPE STRING,
LENG TYPE STRING,
DECIMALS TYPE STRING,
ACCESSMODE TYPE STRING,
KEYDEF TYPE STRING,
KEYKIND TYPE STRING,
KEYFDCOUNT TYPE STRING,
GENERIC TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
DDTEXT TYPE STRING,
TYPELEN TYPE STRING,
ACTFLAG TYPE STRING,
TTYPKIND TYPE STRING,
RANGE_CTYP TYPE STRING,
CTDATATYPE TYPE STRING,
CTLENG TYPE STRING,
CTDECIMALS TYPE STRING,
REFTYPE TYPE STRING,
OCCURS TYPE STRING,
PROXYTYPE TYPE STRING,
ALIAS TYPE STRING,
FURTHERSECKEY TYPE STRING,
DD42V_TAB TYPE STRING,
TADIR TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
KORRNUM TYPE STRING,
SRCSYSTEM TYPE STRING,
AUTHOR TYPE STRING,
SRCDEP TYPE STRING,
DEVCLASS TYPE STRING,
GENFLAG TYPE STRING,
EDTFLAG TYPE STRING,
CPROJECT TYPE STRING,
MASTERLANG TYPE STRING,
VERSID TYPE STRING,
PAKNOCHECK TYPE STRING,
OBJSTABLTY TYPE STRING,
COMPONENT TYPE STRING,
CRELEASE TYPE STRING,
DELFLAG TYPE STRING,
TRANSLTTXT TYPE STRING,
CREATED_ON TYPE STRING,
CHECK_DATE TYPE STRING,
CHECK_CFG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/GC1/STR_DDIC_TTYP_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_/GC1/STR_DDIC_TTYP_METADATA_STR-NAME sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-GOTSTATE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DD40V_WA sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-TYPENAME sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DDLANGUAGE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-ROWTYPE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-ROWKIND sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DATATYPE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-LENG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DECIMALS sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-ACCESSMODE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-KEYDEF sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-KEYKIND sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-KEYFDCOUNT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-GENERIC sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-AS4USER sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-AS4DATE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-AS4TIME sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DDTEXT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-TYPELEN sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-ACTFLAG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-TTYPKIND sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-RANGE_CTYP sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CTDATATYPE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CTLENG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CTDECIMALS sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-REFTYPE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-OCCURS sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-PROXYTYPE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-ALIAS sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-FURTHERSECKEY sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DD42V_TAB sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-TADIR sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-PGMID sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-OBJECT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-OBJ_NAME sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-KORRNUM sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-SRCSYSTEM sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-AUTHOR sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-SRCDEP sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DEVCLASS sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-GENFLAG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-EDTFLAG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CPROJECT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-MASTERLANG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-VERSID sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-PAKNOCHECK sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-OBJSTABLTY sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-COMPONENT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CRELEASE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-DELFLAG sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-TRANSLTTXT sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CREATED_ON sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CHECK_DATE sy-vline 
WA_/GC1/STR_DDIC_TTYP_METADATA_STR-CHECK_CFG sy-vline      INTO ld_text SEPARATED BY SPACE.

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