ABAP Select data from SAP table /PLMB/V_RCA_QNT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMB/V_RCA_QNT
*  INTO TABLE @DATA(IT_/PLMB/V_RCA_QNT2).
*--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_/PLMB/V_RCA_QNT INDEX 1 INTO DATA(WA_/PLMB/V_RCA_QNT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMB/V_RCA_QNT>-MANDT = 1.
</PLMB/V_RCA_QNT>-ID = 1.
</PLMB/V_RCA_QNT>-SAP_OWNED = 1.
</PLMB/V_RCA_QNT>-ESTCAT_LIST = 1.
</PLMB/V_RCA_QNT>-ESTCAT_LIST_NUSG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMB/V_RCA_QNT-ESTCAT_COMP, sy-vline,
  WA_/PLMB/V_RCA_QNT-SUBCAT_GROUP, sy-vline,
  WA_/PLMB/V_RCA_QNT-SUBCAT_DATA, sy-vline,
  WA_/PLMB/V_RCA_QNT-SUBCAT_PROCLOSS, sy-vline,
  WA_/PLMB/V_RCA_QNT-SUBCAT_STORLOSS, sy-vline,
  WA_/PLMB/V_RCA_QNT-COMP_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMB/V_RCA_QNT 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_/PLMB/V_RCA_QNT 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_/PLMB/V_RCA_QNT INTO WA_/PLMB/V_RCA_QNT.


*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_/PLMB/V_RCA_QNT_STR, 
MANDT TYPE STRING,
ID TYPE STRING,
SAP_OWNED TYPE STRING,
ESTCAT_LIST TYPE STRING,
ESTCAT_LIST_NUSG TYPE STRING,
ESTCAT_COMP TYPE STRING,
SUBCAT_GROUP TYPE STRING,
SUBCAT_DATA TYPE STRING,
SUBCAT_PROCLOSS TYPE STRING,
SUBCAT_STORLOSS TYPE STRING,
COMP_TYPE TYPE STRING,
ESTCAT_DRV TYPE STRING,
ATNAM_DRV TYPE STRING,
ATNAM_CLASS_DRV TYPE STRING,
ESTCAT_UNIT TYPE STRING,
ATNAM_UNIT TYPE STRING,
ESTCAT_PROCLOSS TYPE STRING,
ESTCAT_STORLOSS TYPE STRING,
CONSIDER_BLANK TYPE STRING,
ESTCAT_COMP_PROC TYPE STRING,
ESTCAT_COMP_STOR TYPE STRING,
DEFAULT_GROUP TYPE STRING,
UI_DECIMALS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMB/V_RCA_QNT_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_/PLMB/V_RCA_QNT_STR-MANDT sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ID sy-vline 
WA_/PLMB/V_RCA_QNT_STR-SAP_OWNED sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_LIST sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_LIST_NUSG sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_COMP sy-vline 
WA_/PLMB/V_RCA_QNT_STR-SUBCAT_GROUP sy-vline 
WA_/PLMB/V_RCA_QNT_STR-SUBCAT_DATA sy-vline 
WA_/PLMB/V_RCA_QNT_STR-SUBCAT_PROCLOSS sy-vline 
WA_/PLMB/V_RCA_QNT_STR-SUBCAT_STORLOSS sy-vline 
WA_/PLMB/V_RCA_QNT_STR-COMP_TYPE sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_DRV sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ATNAM_DRV sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ATNAM_CLASS_DRV sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_UNIT sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ATNAM_UNIT sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_PROCLOSS sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_STORLOSS sy-vline 
WA_/PLMB/V_RCA_QNT_STR-CONSIDER_BLANK sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_COMP_PROC sy-vline 
WA_/PLMB/V_RCA_QNT_STR-ESTCAT_COMP_STOR sy-vline 
WA_/PLMB/V_RCA_QNT_STR-DEFAULT_GROUP sy-vline 
WA_/PLMB/V_RCA_QNT_STR-UI_DECIMALS sy-vline      INTO ld_text SEPARATED BY SPACE.

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