ABAP Select data from SAP table /LIME/PI_DOC_TB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /LIME/PI_DOC_TB
*  INTO TABLE @DATA(IT_/LIME/PI_DOC_TB2).
*--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_/LIME/PI_DOC_TB INDEX 1 INTO DATA(WA_/LIME/PI_DOC_TB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</LIME/PI_DOC_TB>-MANDT = 1.
</LIME/PI_DOC_TB>-GUID_DOC = 1.
</LIME/PI_DOC_TB>-ITEM_NO = 1.
</LIME/PI_DOC_TB>-LINE_IDX = 1.
</LIME/PI_DOC_TB>-CHANGE_SEQ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/LIME/PI_DOC_TB-ITEM_TYPE, sy-vline,
  WA_/LIME/PI_DOC_TB-QAN_DOC_STATUS, sy-vline,
  WA_/LIME/PI_DOC_TB-QUAN_SEQ, sy-vline,
  WA_/LIME/PI_DOC_TB-UNIT, sy-vline,
  WA_/LIME/PI_DOC_TB-QUANTITY, sy-vline,
  WA_/LIME/PI_DOC_TB-ENTERED_QUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/LIME/PI_DOC_TB 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_/LIME/PI_DOC_TB 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_/LIME/PI_DOC_TB INTO WA_/LIME/PI_DOC_TB.


*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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/LIME/PI_DOC_TB-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/LIME/PI_DOC_TB-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ENTERED_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/LIME/PI_DOC_TB-ENTERED_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/LIME/PI_DOC_TB-ENTERED_UNIT.
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_/LIME/PI_DOC_TB_STR, 
MANDT TYPE STRING,
GUID_DOC TYPE STRING,
ITEM_NO TYPE STRING,
LINE_IDX TYPE STRING,
CHANGE_SEQ TYPE STRING,
ITEM_TYPE TYPE STRING,
QAN_DOC_STATUS TYPE STRING,
QUAN_SEQ TYPE STRING,
UNIT TYPE STRING,
QUANTITY TYPE STRING,
ENTERED_QUANTITY TYPE STRING,
ENTERED_UNIT TYPE STRING,
IND_ZERO_COUNT TYPE STRING,
IND_NOT_COUNT TYPE STRING,
PARAM_NAME TYPE STRING,
PARAM_VALUE TYPE STRING,
PARAM_GROUP TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/LIME/PI_DOC_TB_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_/LIME/PI_DOC_TB_STR-MANDT sy-vline 
WA_/LIME/PI_DOC_TB_STR-GUID_DOC sy-vline 
WA_/LIME/PI_DOC_TB_STR-ITEM_NO sy-vline 
WA_/LIME/PI_DOC_TB_STR-LINE_IDX sy-vline 
WA_/LIME/PI_DOC_TB_STR-CHANGE_SEQ sy-vline 
WA_/LIME/PI_DOC_TB_STR-ITEM_TYPE sy-vline 
WA_/LIME/PI_DOC_TB_STR-QAN_DOC_STATUS sy-vline 
WA_/LIME/PI_DOC_TB_STR-QUAN_SEQ sy-vline 
WA_/LIME/PI_DOC_TB_STR-UNIT sy-vline 
WA_/LIME/PI_DOC_TB_STR-QUANTITY sy-vline 
WA_/LIME/PI_DOC_TB_STR-ENTERED_QUANTITY sy-vline 
WA_/LIME/PI_DOC_TB_STR-ENTERED_UNIT sy-vline 
WA_/LIME/PI_DOC_TB_STR-IND_ZERO_COUNT sy-vline 
WA_/LIME/PI_DOC_TB_STR-IND_NOT_COUNT sy-vline 
WA_/LIME/PI_DOC_TB_STR-PARAM_NAME sy-vline 
WA_/LIME/PI_DOC_TB_STR-PARAM_VALUE sy-vline 
WA_/LIME/PI_DOC_TB_STR-PARAM_GROUP sy-vline 
WA_/LIME/PI_DOC_TB_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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