ABAP Select data from SAP table SLS_TTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLS_TTYPE
*  INTO TABLE @DATA(IT_SLS_TTYPE2).
*--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_SLS_TTYPE INDEX 1 INTO DATA(WA_SLS_TTYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLS_TTYPE>-MANDT = 1.
<SLS_TTYPE>-TTYID = 1.
<SLS_TTYPE>-TTYSH = 1.
<SLS_TTYPE>-TTYTX = 1.
<SLS_TTYPE>-TSCENARIO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLS_TTYPE-BOOKING, sy-vline,
  WA_SLS_TTYPE-REPALLOWED, sy-vline,
  WA_SLS_TTYPE-REPNO, sy-vline,
  WA_SLS_TTYPE-THHIGH, sy-vline,
  WA_SLS_TTYPE-THLOW, sy-vline,
  WA_SLS_TTYPE-STAVER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLS_TTYPE 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_SLS_TTYPE 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_SLS_TTYPE INTO WA_SLS_TTYPE.


*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_SLS_TTYPE_STR, 
MANDT TYPE STRING,
TTYID TYPE STRING,
TTYSH TYPE STRING,
TTYTX TYPE STRING,
TSCENARIO TYPE STRING,
BOOKING TYPE STRING,
REPALLOWED TYPE STRING,
REPNO TYPE STRING,
THHIGH TYPE STRING,
THLOW TYPE STRING,
STAVER TYPE STRING,
THMAX TYPE STRING,
VRED TYPE STRING,
VYELLOW TYPE STRING,
VGREEN TYPE STRING,
TRED TYPE STRING,
TYELLOW TYPE STRING,
TGREEN TYPE STRING,
CRED TYPE STRING,
CYELLOW TYPE STRING,
CGREEN TYPE STRING,
MARK TYPE STRING,
CERTTYPE TYPE STRING,
CERTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLS_TTYPE_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_SLS_TTYPE_STR-MANDT sy-vline 
WA_SLS_TTYPE_STR-TTYID sy-vline 
WA_SLS_TTYPE_STR-TTYSH sy-vline 
WA_SLS_TTYPE_STR-TTYTX sy-vline 
WA_SLS_TTYPE_STR-TSCENARIO sy-vline 
WA_SLS_TTYPE_STR-BOOKING sy-vline 
WA_SLS_TTYPE_STR-REPALLOWED sy-vline 
WA_SLS_TTYPE_STR-REPNO sy-vline 
WA_SLS_TTYPE_STR-THHIGH sy-vline 
WA_SLS_TTYPE_STR-THLOW sy-vline 
WA_SLS_TTYPE_STR-STAVER sy-vline 
WA_SLS_TTYPE_STR-THMAX sy-vline 
WA_SLS_TTYPE_STR-VRED sy-vline 
WA_SLS_TTYPE_STR-VYELLOW sy-vline 
WA_SLS_TTYPE_STR-VGREEN sy-vline 
WA_SLS_TTYPE_STR-TRED sy-vline 
WA_SLS_TTYPE_STR-TYELLOW sy-vline 
WA_SLS_TTYPE_STR-TGREEN sy-vline 
WA_SLS_TTYPE_STR-CRED sy-vline 
WA_SLS_TTYPE_STR-CYELLOW sy-vline 
WA_SLS_TTYPE_STR-CGREEN sy-vline 
WA_SLS_TTYPE_STR-MARK sy-vline 
WA_SLS_TTYPE_STR-CERTTYPE sy-vline 
WA_SLS_TTYPE_STR-CERTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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