ABAP Select data from SAP table PIQCORR_STRU_CMS2_SM_REFREL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQCORR_STRU_CMS2_SM_REFREL 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 PIQCORR_STRU_CMS2_SM_REFREL. 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 PIQCORR_STRU_CMS2_SM_REFREL 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_PIQCORR_STRU_CMS2_SM_REFREL TYPE STANDARD TABLE OF PIQCORR_STRU_CMS2_SM_REFREL,
      WA_PIQCORR_STRU_CMS2_SM_REFREL TYPE PIQCORR_STRU_CMS2_SM_REFREL,
      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: <PIQCORR_STRU_CMS2_SM_REFREL> TYPE PIQCORR_STRU_CMS2_SM_REFREL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQCORR_STRU_CMS2_SM_REFREL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQCORR_STRU_CMS2_SM_REFREL
  INTO TABLE IT_PIQCORR_STRU_CMS2_SM_REFREL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCORR_STRU_CMS2_SM_REFREL
*  INTO TABLE @DATA(IT_PIQCORR_STRU_CMS2_SM_REFREL2).
*--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_PIQCORR_STRU_CMS2_SM_REFREL INDEX 1 INTO DATA(WA_PIQCORR_STRU_CMS2_SM_REFREL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQCORR_STRU_CMS2_SM_REFREL ASSIGNING <PIQCORR_STRU_CMS2_SM_REFREL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCORR_STRU_CMS2_SM_REFREL>-WA_SM_REFREL = 1.
<PIQCORR_STRU_CMS2_SM_REFREL>-MANDT = 1.
<PIQCORR_STRU_CMS2_SM_REFREL>-PLVAR = 1.
<PIQCORR_STRU_CMS2_SM_REFREL>-OTYPE = 1.
<PIQCORR_STRU_CMS2_SM_REFREL>-OBJID = 1.

ENDLOOP.

LOOP AT IT_PIQCORR_STRU_CMS2_SM_REFREL INTO WA_PIQCORR_STRU_CMS2_SM_REFREL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCORR_STRU_CMS2_SM_REFREL-SUBTY, sy-vline,
  WA_PIQCORR_STRU_CMS2_SM_REFREL-ISTAT, sy-vline,
  WA_PIQCORR_STRU_CMS2_SM_REFREL-BEGDA, sy-vline,
  WA_PIQCORR_STRU_CMS2_SM_REFREL-ENDDA, sy-vline,
  WA_PIQCORR_STRU_CMS2_SM_REFREL-VARYF, sy-vline,
  WA_PIQCORR_STRU_CMS2_SM_REFREL-SEQNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCORR_STRU_CMS2_SM_REFREL 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_PIQCORR_STRU_CMS2_SM_REFREL 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_PIQCORR_STRU_CMS2_SM_REFREL INTO WA_PIQCORR_STRU_CMS2_SM_REFREL.


*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_PIQCORR_STRU_CMS2_SM_REFREL_STR, 
WA_SM_REFREL TYPE STRING,
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
SCLAS TYPE STRING,
SOBID TYPE STRING,
REL_OBJ_SHORT TYPE STRING,
REL_OBJ_STEXT TYPE STRING,
ADATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCORR_STRU_CMS2_SM_REFREL_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_PIQCORR_STRU_CMS2_SM_REFREL_STR-WA_SM_REFREL sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-MANDT sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-PLVAR sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-OTYPE sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-OBJID sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-SUBTY sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-ISTAT sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-BEGDA sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-ENDDA sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-VARYF sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-SEQNR sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-RSIGN sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-RELAT sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-SCLAS sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-SOBID sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-REL_OBJ_SHORT sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-REL_OBJ_STEXT sy-vline 
WA_PIQCORR_STRU_CMS2_SM_REFREL_STR-ADATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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