ABAP Select data from SAP table TRLS_POSITION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRLS_POSITION
*  INTO TABLE @DATA(IT_TRLS_POSITION2).
*--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_TRLS_POSITION INDEX 1 INTO DATA(WA_TRLS_POSITION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRLS_POSITION>-OS_GUID = 1.
<TRLS_POSITION>-POS_MAN_PROC = 1.
<TRLS_POSITION>-POSITION_CURR = 1.
<TRLS_POSITION>-VALUATION_CURR = 1.
<TRLS_POSITION>-ACTIVE_PASSIVE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRLS_POSITION-SBILK, sy-vline,
  WA_TRLS_POSITION-SKWG14NEU, sy-vline,
  WA_TRLS_POSITION-RERF, sy-vline,
  WA_TRLS_POSITION-DERF, sy-vline,
  WA_TRLS_POSITION-TERF, sy-vline,
  WA_TRLS_POSITION-REHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRLS_POSITION 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_TRLS_POSITION 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_TRLS_POSITION INTO WA_TRLS_POSITION.


*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 POSCT, internal->external for field ACTIVE_PASSIVE
CALL FUNCTION 'CONVERSION_EXIT_POSCT_OUTPUT'
  EXPORTING
    input =                      WA_TRLS_POSITION-ACTIVE_PASSIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRLS_POSITION-ACTIVE_PASSIVE.
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_TRLS_POSITION_STR, 
OS_GUID TYPE STRING,
POS_MAN_PROC TYPE STRING,
POSITION_CURR TYPE STRING,
VALUATION_CURR TYPE STRING,
ACTIVE_PASSIVE TYPE STRING,
SBILK TYPE STRING,
SKWG14NEU TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
FLG_SUBPOSITION TYPE STRING,
IDENTIFIER_OID TYPE STRING,
IDENTIFIER_CLS TYPE STRING,
TAB_SUBPOSITION_PERS TYPE STRING,
ZERO_POS_DATE TYPE STRING,
OBJNR TYPE STRING,
POS_ATTRIB TYPE STRING,
POS_ATTRIB_S1 TYPE STRING,
POS_ATTRIB_S2 TYPE STRING,
POS_ATTRIB_S3 TYPE STRING,
POS_ATTRIB_M1 TYPE STRING,
POS_ATTRIB_M2 TYPE STRING,
POS_ATTRIB_M3 TYPE STRING,
POS_ATTRIB_L1 TYPE STRING,
POS_ATTRIB_L2 TYPE STRING,
POS_ATTRIB_L3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRLS_POSITION_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_TRLS_POSITION_STR-OS_GUID sy-vline 
WA_TRLS_POSITION_STR-POS_MAN_PROC sy-vline 
WA_TRLS_POSITION_STR-POSITION_CURR sy-vline 
WA_TRLS_POSITION_STR-VALUATION_CURR sy-vline 
WA_TRLS_POSITION_STR-ACTIVE_PASSIVE sy-vline 
WA_TRLS_POSITION_STR-SBILK sy-vline 
WA_TRLS_POSITION_STR-SKWG14NEU sy-vline 
WA_TRLS_POSITION_STR-RERF sy-vline 
WA_TRLS_POSITION_STR-DERF sy-vline 
WA_TRLS_POSITION_STR-TERF sy-vline 
WA_TRLS_POSITION_STR-REHER sy-vline 
WA_TRLS_POSITION_STR-RBEAR sy-vline 
WA_TRLS_POSITION_STR-DBEAR sy-vline 
WA_TRLS_POSITION_STR-TBEAR sy-vline 
WA_TRLS_POSITION_STR-RBHER sy-vline 
WA_TRLS_POSITION_STR-FLG_SUBPOSITION sy-vline 
WA_TRLS_POSITION_STR-IDENTIFIER_OID sy-vline 
WA_TRLS_POSITION_STR-IDENTIFIER_CLS sy-vline 
WA_TRLS_POSITION_STR-TAB_SUBPOSITION_PERS sy-vline 
WA_TRLS_POSITION_STR-ZERO_POS_DATE sy-vline 
WA_TRLS_POSITION_STR-OBJNR sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_S1 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_S2 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_S3 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_M1 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_M2 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_M3 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_L1 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_L2 sy-vline 
WA_TRLS_POSITION_STR-POS_ATTRIB_L3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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