ABAP Select data from SAP table PIQAW_ACWORK_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQAW_ACWORK_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 PIQAW_ACWORK_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 PIQAW_ACWORK_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_PIQAW_ACWORK_ALV TYPE STANDARD TABLE OF PIQAW_ACWORK_ALV,
      WA_PIQAW_ACWORK_ALV TYPE PIQAW_ACWORK_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: <PIQAW_ACWORK_ALV> TYPE PIQAW_ACWORK_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAW_ACWORK_ALV
*  INTO TABLE @DATA(IT_PIQAW_ACWORK_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_PIQAW_ACWORK_ALV INDEX 1 INTO DATA(WA_PIQAW_ACWORK_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAW_ACWORK_ALV>-ACADEMICWORKID = 1.
<PIQAW_ACWORK_ALV>-AGRID = 1.
<PIQAW_ACWORK_ALV>-AWICON = 1.
<PIQAW_ACWORK_ALV>-AWOTYPE = 1.
<PIQAW_ACWORK_ALV>-AWOTYPE_TXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAW_ACWORK_ALV-AWOBJID, sy-vline,
  WA_PIQAW_ACWORK_ALV-AWOBJECT_SHT, sy-vline,
  WA_PIQAW_ACWORK_ALV-AWOBJECT_TXT, sy-vline,
  WA_PIQAW_ACWORK_ALV-AWTEXT, sy-vline,
  WA_PIQAW_ACWORK_ALV-ACAD_YEAR, sy-vline,
  WA_PIQAW_ACWORK_ALV-ACAD_YEAR_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAW_ACWORK_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_PIQAW_ACWORK_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_PIQAW_ACWORK_ALV INTO WA_PIQAW_ACWORK_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 CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQAW_ACWORK_ALV-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAW_ACWORK_ALV-CPUNIT.
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_PIQAW_ACWORK_ALV_STR, 
ACADEMICWORKID TYPE STRING,
AGRID TYPE STRING,
AWICON TYPE STRING,
AWOTYPE TYPE STRING,
AWOTYPE_TXT TYPE STRING,
AWOBJID TYPE STRING,
AWOBJECT_SHT TYPE STRING,
AWOBJECT_TXT TYPE STRING,
AWTEXT TYPE STRING,
ACAD_YEAR TYPE STRING,
ACAD_YEAR_TXT TYPE STRING,
ACAD_SESSION TYPE STRING,
ACAD_SESSION_TXT TYPE STRING,
AWBEGDATE TYPE STRING,
AWENDDATE TYPE STRING,
TRANSFERFLAG TYPE STRING,
AWSTATUS TYPE STRING,
AWSTATUS_TXT TYPE STRING,
EVENTPACKAGE TYPE STRING,
EVENTPACKAGE_SHT TYPE STRING,
EVENTPACKAGE_TXT TYPE STRING,
AWLOCKFLAG TYPE STRING,
CANCELREASON TYPE STRING,
CANCELREASON_TXT TYPE STRING,
CANCELDATE TYPE STRING,
ANNULMENT TYPE STRING,
ANNULMENT_TXT TYPE STRING,
AWRATING TYPE STRING,
AWRATING_TXT TYPE STRING,
BOOKDATE TYPE STRING,
CHARGEFREE TYPE STRING,
BOOKREASON TYPE STRING,
BOOKREASON_TXT TYPE STRING,
COBOKICON TYPE STRING,
COBOK TYPE STRING,
COBOK_TXT TYPE STRING,
AGRTYPE TYPE STRING,
AGRTYPE_TXT TYPE STRING,
AGRSTAT TYPE STRING,
AGRSTAT_TXT TYPE STRING,
GRADESYMBOL TYPE STRING,
GRADESYMBOL_TXT TYPE STRING,
GRADE TYPE STRING,
GRADESCALE TYPE STRING,
GRADESCALE_TXT TYPE STRING,
AGRNOTRATED TYPE STRING,
AGRDATE TYPE STRING,
AGRCOMPLETED TYPE STRING,
CPATTEMP TYPE STRING,
CPEARNED TYPE STRING,
CPGRADED TYPE STRING,
CPUNIT TYPE STRING,
CPUNIT_TXT TYPE STRING,
AGRREMARK TYPE STRING,
AGRREMARKTEXT TYPE STRING,
AGRBEGDA TYPE STRING,
AGRENDDA TYPE STRING,
ARCH_STATUS TYPE STRING,
ELEMENTSCT TYPE STRING,
ELEMENTCGT TYPE STRING,
DISCIPS TYPE STRING,
OFFEREDT TYPE STRING,
RESPONSIBLET TYPE STRING,
REFERENCET TYPE STRING,
SEVERITYT TYPE STRING,
CAMPUST TYPE STRING,
MODREPEATTYPE TYPE STRING,
SHOWINCATALOGUE TYPE STRING,
CATEGORYT TYPE STRING,
TLINE TYPE STRING,
IWFLAG TYPE STRING,
IWOBJID TYPE STRING,
IWSHORT TYPE STRING,
IWSTEXT TYPE STRING,
GRADECHANGED TYPE STRING,
ATTNO_TW TYPE STRING,
ALT_SCALEID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAW_ACWORK_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_PIQAW_ACWORK_ALV_STR-ACADEMICWORKID sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRID sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWICON sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWOTYPE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWOTYPE_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWOBJID sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWOBJECT_SHT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWOBJECT_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWTEXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ACAD_YEAR sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ACAD_YEAR_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ACAD_SESSION sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ACAD_SESSION_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWBEGDATE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWENDDATE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-TRANSFERFLAG sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWSTATUS sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWSTATUS_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-EVENTPACKAGE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-EVENTPACKAGE_SHT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-EVENTPACKAGE_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWLOCKFLAG sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CANCELREASON sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CANCELREASON_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CANCELDATE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ANNULMENT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ANNULMENT_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWRATING sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AWRATING_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-BOOKDATE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CHARGEFREE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-BOOKREASON sy-vline 
WA_PIQAW_ACWORK_ALV_STR-BOOKREASON_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-COBOKICON sy-vline 
WA_PIQAW_ACWORK_ALV_STR-COBOK sy-vline 
WA_PIQAW_ACWORK_ALV_STR-COBOK_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRTYPE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRTYPE_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRSTAT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRSTAT_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADESYMBOL sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADESYMBOL_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADESCALE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADESCALE_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRNOTRATED sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRDATE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRCOMPLETED sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CPATTEMP sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CPEARNED sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CPGRADED sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CPUNIT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CPUNIT_TXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRREMARK sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRREMARKTEXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRBEGDA sy-vline 
WA_PIQAW_ACWORK_ALV_STR-AGRENDDA sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ARCH_STATUS sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ELEMENTSCT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ELEMENTCGT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-DISCIPS sy-vline 
WA_PIQAW_ACWORK_ALV_STR-OFFEREDT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-RESPONSIBLET sy-vline 
WA_PIQAW_ACWORK_ALV_STR-REFERENCET sy-vline 
WA_PIQAW_ACWORK_ALV_STR-SEVERITYT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CAMPUST sy-vline 
WA_PIQAW_ACWORK_ALV_STR-MODREPEATTYPE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-SHOWINCATALOGUE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-CATEGORYT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-TLINE sy-vline 
WA_PIQAW_ACWORK_ALV_STR-IWFLAG sy-vline 
WA_PIQAW_ACWORK_ALV_STR-IWOBJID sy-vline 
WA_PIQAW_ACWORK_ALV_STR-IWSHORT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-IWSTEXT sy-vline 
WA_PIQAW_ACWORK_ALV_STR-GRADECHANGED sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ATTNO_TW sy-vline 
WA_PIQAW_ACWORK_ALV_STR-ALT_SCALEID sy-vline      INTO ld_text SEPARATED BY SPACE.

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