ABAP Select data from SAP table /SAPAPO/TTIO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/TTIO
*  INTO TABLE @DATA(IT_/SAPAPO/TTIO2).
*--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_/SAPAPO/TTIO INDEX 1 INTO DATA(WA_/SAPAPO/TTIO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/TTIO>-TTWID = 1.
</SAPAPO/TTIO>-TTWNAME = 1.
</SAPAPO/TTIO>-MARK = 1.
</SAPAPO/TTIO>-TTYPE = 1.
</SAPAPO/TTIO>-TTYPETXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/TTIO-TTLSQ, sy-vline,
  WA_/SAPAPO/TTIO-LOCNO, sy-vline,
  WA_/SAPAPO/TTIO-LOCID, sy-vline,
  WA_/SAPAPO/TTIO-TTCID, sy-vline,
  WA_/SAPAPO/TTIO-TTCNAME, sy-vline,
  WA_/SAPAPO/TTIO-TTRESID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/TTIO 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_/SAPAPO/TTIO 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_/SAPAPO/TTIO INTO WA_/SAPAPO/TTIO.


*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_/SAPAPO/TTIO_STR, 
TTWID TYPE STRING,
TTWNAME TYPE STRING,
MARK TYPE STRING,
TTYPE TYPE STRING,
TTYPETXT TYPE STRING,
TTLSQ TYPE STRING,
LOCNO TYPE STRING,
LOCID TYPE STRING,
TTCID TYPE STRING,
TTCNAME TYPE STRING,
TTRESID TYPE STRING,
TTRESNAME TYPE STRING,
TTSTRDEP TYPE STRING,
TTVID TYPE STRING,
VALFR TYPE STRING,
DATEFROM TYPE STRING,
TIMEFROM TYPE STRING,
VALTO TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
TTDEPTIME TYPE STRING,
TTDEPDATE TYPE STRING,
TTCDTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/TTIO_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_/SAPAPO/TTIO_STR-TTWID sy-vline 
WA_/SAPAPO/TTIO_STR-TTWNAME sy-vline 
WA_/SAPAPO/TTIO_STR-MARK sy-vline 
WA_/SAPAPO/TTIO_STR-TTYPE sy-vline 
WA_/SAPAPO/TTIO_STR-TTYPETXT sy-vline 
WA_/SAPAPO/TTIO_STR-TTLSQ sy-vline 
WA_/SAPAPO/TTIO_STR-LOCNO sy-vline 
WA_/SAPAPO/TTIO_STR-LOCID sy-vline 
WA_/SAPAPO/TTIO_STR-TTCID sy-vline 
WA_/SAPAPO/TTIO_STR-TTCNAME sy-vline 
WA_/SAPAPO/TTIO_STR-TTRESID sy-vline 
WA_/SAPAPO/TTIO_STR-TTRESNAME sy-vline 
WA_/SAPAPO/TTIO_STR-TTSTRDEP sy-vline 
WA_/SAPAPO/TTIO_STR-TTVID sy-vline 
WA_/SAPAPO/TTIO_STR-VALFR sy-vline 
WA_/SAPAPO/TTIO_STR-DATEFROM sy-vline 
WA_/SAPAPO/TTIO_STR-TIMEFROM sy-vline 
WA_/SAPAPO/TTIO_STR-VALTO sy-vline 
WA_/SAPAPO/TTIO_STR-DATETO sy-vline 
WA_/SAPAPO/TTIO_STR-TIMETO sy-vline 
WA_/SAPAPO/TTIO_STR-TTDEPTIME sy-vline 
WA_/SAPAPO/TTIO_STR-TTDEPDATE sy-vline 
WA_/SAPAPO/TTIO_STR-TTCDTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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