ABAP Select data from SAP table SLS_TSTRIO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SLS_TSTRIO 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_TSTRIO. 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_TSTRIO 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_TSTRIO TYPE STANDARD TABLE OF SLS_TSTRIO,
      WA_SLS_TSTRIO TYPE SLS_TSTRIO,
      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_TSTRIO> TYPE SLS_TSTRIO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLS_TSTRIO
*  INTO TABLE @DATA(IT_SLS_TSTRIO2).
*--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_TSTRIO INDEX 1 INTO DATA(WA_SLS_TSTRIO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLS_TSTRIO>-TESTID = 1.
<SLS_TSTRIO>-TEST_G = 1.
<SLS_TSTRIO>-TEST_C = 1.
<SLS_TSTRIO>-TEST_PG = 1.
<SLS_TSTRIO>-TEST_PC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLS_TSTRIO-TEST_V1, sy-vline,
  WA_SLS_TSTRIO-TEST_V2, sy-vline,
  WA_SLS_TSTRIO-TEST_V3, sy-vline,
  WA_SLS_TSTRIO-TEST_V4, sy-vline,
  WA_SLS_TSTRIO-TEST_NAME, sy-vline,
  WA_SLS_TSTRIO-TFORM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLS_TSTRIO 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_TSTRIO 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_TSTRIO INTO WA_SLS_TSTRIO.


*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_TSTRIO_STR, 
TESTID TYPE STRING,
TEST_G TYPE STRING,
TEST_C TYPE STRING,
TEST_PG TYPE STRING,
TEST_PC TYPE STRING,
TEST_V1 TYPE STRING,
TEST_V2 TYPE STRING,
TEST_V3 TYPE STRING,
TEST_V4 TYPE STRING,
TEST_NAME TYPE STRING,
TFORM TYPE STRING,
STID TYPE STRING,
ST_NAME TYPE STRING,
PUID TYPE STRING,
PU_G TYPE STRING,
PU_C TYPE STRING,
PU_PG TYPE STRING,
PU_PC TYPE STRING,
PU_V1 TYPE STRING,
PU_V2 TYPE STRING,
PU_V3 TYPE STRING,
PU_V4 TYPE STRING,
PU_NAME TYPE STRING,
ITEMID TYPE STRING,
ITEM_G TYPE STRING,
ITEM_C TYPE STRING,
ITEM_PG TYPE STRING,
ITEM_PC TYPE STRING,
ITEM_V1 TYPE STRING,
ITEM_V2 TYPE STRING,
ITEM_V3 TYPE STRING,
ITEM_V4 TYPE STRING,
ITEM_TYPE TYPE STRING,
ITEM_NAME TYPE STRING,
ITEM_DESCR TYPE STRING,
ITEM_VERS TYPE STRING,
ITEM_DIFF TYPE STRING,
ITEM_MAXPT TYPE STRING,
ITEM_WGHT TYPE STRING,
TF1_FLAG TYPE STRING,
TF2_FLAG TYPE STRING,
TF3_FLAG TYPE STRING,
TF4_FLAG TYPE STRING,
TF5_FLAG TYPE STRING,
TF6_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLS_TSTRIO_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_TSTRIO_STR-TESTID sy-vline 
WA_SLS_TSTRIO_STR-TEST_G sy-vline 
WA_SLS_TSTRIO_STR-TEST_C sy-vline 
WA_SLS_TSTRIO_STR-TEST_PG sy-vline 
WA_SLS_TSTRIO_STR-TEST_PC sy-vline 
WA_SLS_TSTRIO_STR-TEST_V1 sy-vline 
WA_SLS_TSTRIO_STR-TEST_V2 sy-vline 
WA_SLS_TSTRIO_STR-TEST_V3 sy-vline 
WA_SLS_TSTRIO_STR-TEST_V4 sy-vline 
WA_SLS_TSTRIO_STR-TEST_NAME sy-vline 
WA_SLS_TSTRIO_STR-TFORM sy-vline 
WA_SLS_TSTRIO_STR-STID sy-vline 
WA_SLS_TSTRIO_STR-ST_NAME sy-vline 
WA_SLS_TSTRIO_STR-PUID sy-vline 
WA_SLS_TSTRIO_STR-PU_G sy-vline 
WA_SLS_TSTRIO_STR-PU_C sy-vline 
WA_SLS_TSTRIO_STR-PU_PG sy-vline 
WA_SLS_TSTRIO_STR-PU_PC sy-vline 
WA_SLS_TSTRIO_STR-PU_V1 sy-vline 
WA_SLS_TSTRIO_STR-PU_V2 sy-vline 
WA_SLS_TSTRIO_STR-PU_V3 sy-vline 
WA_SLS_TSTRIO_STR-PU_V4 sy-vline 
WA_SLS_TSTRIO_STR-PU_NAME sy-vline 
WA_SLS_TSTRIO_STR-ITEMID sy-vline 
WA_SLS_TSTRIO_STR-ITEM_G sy-vline 
WA_SLS_TSTRIO_STR-ITEM_C sy-vline 
WA_SLS_TSTRIO_STR-ITEM_PG sy-vline 
WA_SLS_TSTRIO_STR-ITEM_PC sy-vline 
WA_SLS_TSTRIO_STR-ITEM_V1 sy-vline 
WA_SLS_TSTRIO_STR-ITEM_V2 sy-vline 
WA_SLS_TSTRIO_STR-ITEM_V3 sy-vline 
WA_SLS_TSTRIO_STR-ITEM_V4 sy-vline 
WA_SLS_TSTRIO_STR-ITEM_TYPE sy-vline 
WA_SLS_TSTRIO_STR-ITEM_NAME sy-vline 
WA_SLS_TSTRIO_STR-ITEM_DESCR sy-vline 
WA_SLS_TSTRIO_STR-ITEM_VERS sy-vline 
WA_SLS_TSTRIO_STR-ITEM_DIFF sy-vline 
WA_SLS_TSTRIO_STR-ITEM_MAXPT sy-vline 
WA_SLS_TSTRIO_STR-ITEM_WGHT sy-vline 
WA_SLS_TSTRIO_STR-TF1_FLAG sy-vline 
WA_SLS_TSTRIO_STR-TF2_FLAG sy-vline 
WA_SLS_TSTRIO_STR-TF3_FLAG sy-vline 
WA_SLS_TSTRIO_STR-TF4_FLAG sy-vline 
WA_SLS_TSTRIO_STR-TF5_FLAG sy-vline 
WA_SLS_TSTRIO_STR-TF6_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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