ABAP Select data from SAP table PIQCOH00_CONXT_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQCOH00_CONXT_ALV 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 PIQCOH00_CONXT_ALV. 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 PIQCOH00_CONXT_ALV 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_PIQCOH00_CONXT_ALV TYPE STANDARD TABLE OF PIQCOH00_CONXT_ALV,
      WA_PIQCOH00_CONXT_ALV TYPE PIQCOH00_CONXT_ALV,
      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: <PIQCOH00_CONXT_ALV> TYPE PIQCOH00_CONXT_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQCOH00_CONXT_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQCOH00_CONXT_ALV
  INTO TABLE IT_PIQCOH00_CONXT_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCOH00_CONXT_ALV
*  INTO TABLE @DATA(IT_PIQCOH00_CONXT_ALV2).
*--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_PIQCOH00_CONXT_ALV INDEX 1 INTO DATA(WA_PIQCOH00_CONXT_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQCOH00_CONXT_ALV ASSIGNING <PIQCOH00_CONXT_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCOH00_CONXT_ALV>-PLVAR = 1.
<PIQCOH00_CONXT_ALV>-OTYPE = 1.
<PIQCOH00_CONXT_ALV>-OBJID = 1.
<PIQCOH00_CONXT_ALV>-GUIDT = 1.
<PIQCOH00_CONXT_ALV>-GUIDS = 1.

ENDLOOP.

LOOP AT IT_PIQCOH00_CONXT_ALV INTO WA_PIQCOH00_CONXT_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCOH00_CONXT_ALV-ONAME, sy-vline,
  WA_PIQCOH00_CONXT_ALV-PERYR, sy-vline,
  WA_PIQCOH00_CONXT_ALV-PERYT, sy-vline,
  WA_PIQCOH00_CONXT_ALV-PERID, sy-vline,
  WA_PIQCOH00_CONXT_ALV-PERIT, sy-vline,
  WA_PIQCOH00_CONXT_ALV-INHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCOH00_CONXT_ALV 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_PIQCOH00_CONXT_ALV 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_PIQCOH00_CONXT_ALV INTO WA_PIQCOH00_CONXT_ALV.


*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 CP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQCOH00_CONXT_ALV-CP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCOH00_CONXT_ALV-CP_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_PIQCOH00_CONXT_ALV_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
GUIDT TYPE STRING,
GUIDS TYPE STRING,
ONAME TYPE STRING,
PERYR TYPE STRING,
PERYT TYPE STRING,
PERID TYPE STRING,
PERIT TYPE STRING,
INHER TYPE STRING,
CP_ATTEMP TYPE STRING,
CP_UNIT TYPE STRING,
SMRATING TYPE STRING,
SCALEID TYPE STRING,
INHER_ICON TYPE STRING,
OSHORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCOH00_CONXT_ALV_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_PIQCOH00_CONXT_ALV_STR-PLVAR sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-OTYPE sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-OBJID sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-GUIDT sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-GUIDS sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-ONAME sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-PERYR sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-PERYT sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-PERID sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-PERIT sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-INHER sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-CP_ATTEMP sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-CP_UNIT sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-SMRATING sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-SCALEID sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-INHER_ICON sy-vline 
WA_PIQCOH00_CONXT_ALV_STR-OSHORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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