ABAP Select data from SAP table PIQSI2S_PERFORMANCE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQSI2S_PERFORMANCE 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 PIQSI2S_PERFORMANCE. 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 PIQSI2S_PERFORMANCE 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_PIQSI2S_PERFORMANCE TYPE STANDARD TABLE OF PIQSI2S_PERFORMANCE,
      WA_PIQSI2S_PERFORMANCE TYPE PIQSI2S_PERFORMANCE,
      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: <PIQSI2S_PERFORMANCE> TYPE PIQSI2S_PERFORMANCE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQSI2S_PERFORMANCE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQSI2S_PERFORMANCE
  INTO TABLE IT_PIQSI2S_PERFORMANCE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQSI2S_PERFORMANCE
*  INTO TABLE @DATA(IT_PIQSI2S_PERFORMANCE2).
*--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_PIQSI2S_PERFORMANCE INDEX 1 INTO DATA(WA_PIQSI2S_PERFORMANCE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQSI2S_PERFORMANCE ASSIGNING <PIQSI2S_PERFORMANCE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQSI2S_PERFORMANCE>-AGRCOMPLETED = 1.
<PIQSI2S_PERFORMANCE>-CPATTEMP = 1.
<PIQSI2S_PERFORMANCE>-CPEARNED = 1.
<PIQSI2S_PERFORMANCE>-CPGRADED = 1.
<PIQSI2S_PERFORMANCE>-CPUNIT = 1.

ENDLOOP.

LOOP AT IT_PIQSI2S_PERFORMANCE INTO WA_PIQSI2S_PERFORMANCE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQSI2S_PERFORMANCE-GRADESYM, sy-vline,
  WA_PIQSI2S_PERFORMANCE-GRADE, sy-vline,
  WA_PIQSI2S_PERFORMANCE-GRADESCALE, sy-vline,
  WA_PIQSI2S_PERFORMANCE-ACPI_VALUE, sy-vline,
  WA_PIQSI2S_PERFORMANCE-ACPI_UNIT, sy-vline,
  WA_PIQSI2S_PERFORMANCE-ACADPI_DEGRELY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQSI2S_PERFORMANCE 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_PIQSI2S_PERFORMANCE 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_PIQSI2S_PERFORMANCE INTO WA_PIQSI2S_PERFORMANCE.


*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 CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQSI2S_PERFORMANCE-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQSI2S_PERFORMANCE-CPUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ACPI_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQSI2S_PERFORMANCE-ACPI_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQSI2S_PERFORMANCE-ACPI_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_PIQSI2S_PERFORMANCE_STR, 
AGRCOMPLETED TYPE STRING,
CPATTEMP TYPE STRING,
CPEARNED TYPE STRING,
CPGRADED TYPE STRING,
CPUNIT TYPE STRING,
GRADESYM TYPE STRING,
GRADE TYPE STRING,
GRADESCALE TYPE STRING,
ACPI_VALUE TYPE STRING,
ACPI_UNIT TYPE STRING,
ACADPI_DEGRELY TYPE STRING,
WEIGHTING TYPE STRING,
IOSEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQSI2S_PERFORMANCE_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_PIQSI2S_PERFORMANCE_STR-AGRCOMPLETED sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-CPATTEMP sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-CPEARNED sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-CPGRADED sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-CPUNIT sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-GRADESYM sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-GRADE sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-GRADESCALE sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-ACPI_VALUE sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-ACPI_UNIT sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-ACADPI_DEGRELY sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-WEIGHTING sy-vline 
WA_PIQSI2S_PERFORMANCE_STR-IOSEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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