ABAP Select data from SAP table TTESDT_DOCUMENT_ST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TTESDT_DOCUMENT_ST
*  INTO TABLE @DATA(IT_TTESDT_DOCUMENT_ST2).
*--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_TTESDT_DOCUMENT_ST INDEX 1 INTO DATA(WA_TTESDT_DOCUMENT_ST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TTESDT_DOCUMENT_ST>-COUNTRYISO = 1.
<TTESDT_DOCUMENT_ST>-DOCUMENTNAME = 1.
<TTESDT_DOCUMENT_ST>-TTEDOCUMENTID = 1.
<TTESDT_DOCUMENT_ST>-REFTOORIGINAL = 1.
<TTESDT_DOCUMENT_ST>-CREA_USER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TTESDT_DOCUMENT_ST-CREA_DATE, sy-vline,
  WA_TTESDT_DOCUMENT_ST-CREA_TIME, sy-vline,
  WA_TTESDT_DOCUMENT_ST-CHNG_USER, sy-vline,
  WA_TTESDT_DOCUMENT_ST-CHNG_DATE, sy-vline,
  WA_TTESDT_DOCUMENT_ST-CHNG_TIME, sy-vline,
  WA_TTESDT_DOCUMENT_ST-DESCRIPTION1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TTESDT_DOCUMENT_ST 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_TTESDT_DOCUMENT_ST 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_TTESDT_DOCUMENT_ST INTO WA_TTESDT_DOCUMENT_ST.


*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 OBJ_SYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TTESDT_DOCUMENT_ST-OBJ_SYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TTESDT_DOCUMENT_ST-OBJ_SYS.
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_TTESDT_DOCUMENT_ST_STR, 
COUNTRYISO TYPE STRING,
DOCUMENTNAME TYPE STRING,
TTEDOCUMENTID TYPE STRING,
REFTOORIGINAL TYPE STRING,
CREA_USER TYPE STRING,
CREA_DATE TYPE STRING,
CREA_TIME TYPE STRING,
CHNG_USER TYPE STRING,
CHNG_DATE TYPE STRING,
CHNG_TIME TYPE STRING,
DESCRIPTION1 TYPE STRING,
DESCRIPTION2 TYPE STRING,
GROUPCODE TYPE STRING,
CALLTTE_TIME TYPE STRING,
RFC_SUBRC TYPE STRING,
SERVER TYPE STRING,
OUTDOC TYPE STRING,
CALLING_DATE TYPE STRING,
CALLING_TIME TYPE STRING,
LAST_POSNR TYPE STRING,
LAST_PRPOSNR TYPE STRING,
LAST_BPPOSNR TYPE STRING,
DOCCREATED TYPE STRING,
ARCHIVED TYPE STRING,
USDOC TYPE STRING,
TABLEBITS TYPE STRING,
OBJ_SYS TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_KEY TYPE STRING,
REFTTEDOCUMENTID TYPE STRING,
REPDATE TYPE STRING,
CONVDATE TYPE STRING,
TTEVERSION TYPE STRING,
XCLASTER TYPE STRING,
PRIDOCGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TTESDT_DOCUMENT_ST_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_TTESDT_DOCUMENT_ST_STR-COUNTRYISO sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-DOCUMENTNAME sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-TTEDOCUMENTID sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-REFTOORIGINAL sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CREA_USER sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CREA_DATE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CREA_TIME sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CHNG_USER sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CHNG_DATE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CHNG_TIME sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-DESCRIPTION1 sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-DESCRIPTION2 sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-GROUPCODE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CALLTTE_TIME sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-RFC_SUBRC sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-SERVER sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-OUTDOC sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CALLING_DATE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CALLING_TIME sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-LAST_POSNR sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-LAST_PRPOSNR sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-LAST_BPPOSNR sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-DOCCREATED sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-ARCHIVED sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-USDOC sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-TABLEBITS sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-OBJ_SYS sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-OBJ_TYPE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-OBJ_KEY sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-REFTTEDOCUMENTID sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-REPDATE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-CONVDATE sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-TTEVERSION sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-XCLASTER sy-vline 
WA_TTESDT_DOCUMENT_ST_STR-PRIDOCGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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