ABAP Select data from SAP table PIQDB_NL_CRIHO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQDB_NL_CRIHO
*  INTO TABLE @DATA(IT_PIQDB_NL_CRIHO2).
*--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_PIQDB_NL_CRIHO INDEX 1 INTO DATA(WA_PIQDB_NL_CRIHO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQDB_NL_CRIHO>-MANDT = 1.
<PIQDB_NL_CRIHO>-STUDENT = 1.
<PIQDB_NL_CRIHO>-CRIMESSAGE = 1.
<PIQDB_NL_CRIHO>-CRIMSGDATE = 1.
<PIQDB_NL_CRIHO>-SEQNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQDB_NL_CRIHO-EDUCATIONCODE, sy-vline,
  WA_PIQDB_NL_CRIHO-STUDYYEAR, sy-vline,
  WA_PIQDB_NL_CRIHO-STUDYSESS, sy-vline,
  WA_PIQDB_NL_CRIHO-OCWNUMBER, sy-vline,
  WA_PIQDB_NL_CRIHO-FORMREG, sy-vline,
  WA_PIQDB_NL_CRIHO-REGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQDB_NL_CRIHO 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_PIQDB_NL_CRIHO 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_PIQDB_NL_CRIHO INTO WA_PIQDB_NL_CRIHO.


*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 PIQST, internal->external for field STUDENT
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQDB_NL_CRIHO-STUDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQDB_NL_CRIHO-STUDENT.
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_PIQDB_NL_CRIHO_STR, 
MANDT TYPE STRING,
STUDENT TYPE STRING,
CRIMESSAGE TYPE STRING,
CRIMSGDATE TYPE STRING,
SEQNR TYPE STRING,
EDUCATIONCODE TYPE STRING,
STUDYYEAR TYPE STRING,
STUDYSESS TYPE STRING,
OCWNUMBER TYPE STRING,
FORMREG TYPE STRING,
REGDATE TYPE STRING,
BRINNUMBER TYPE STRING,
EDUCATIONPHASE TYPE STRING,
FORMOFEDUCATION TYPE STRING,
FIRST_YEAR TYPE STRING,
MONTH_FRM TYPE STRING,
MONTH_TO TYPE STRING,
DEFRAYCODE TYPE STRING,
GENDER_KEY TYPE STRING,
TERMINATEREASON TYPE STRING,
TERMINATEDATE TYPE STRING,
ERDATE TYPE STRING,
ERCODE TYPE STRING,
STUDYPROGRESSCOD TYPE STRING,
PREEDUCATION TYPE STRING,
PREEDUCATIONYEAR TYPE STRING,
PROCESSCODE TYPE STRING,
CRIMSGSENTDATE TYPE STRING,
CRIIBGDATE TYPE STRING,
SIGNALCODE1 TYPE STRING,
SIGNALCODE2 TYPE STRING,
SIGNALCODE3 TYPE STRING,
SIGNALCODE4 TYPE STRING,
ADDRIND TYPE STRING,
GRADID TYPE STRING,
EDUCATIONPGM TYPE STRING,
USNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
FILENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQDB_NL_CRIHO_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_PIQDB_NL_CRIHO_STR-MANDT sy-vline 
WA_PIQDB_NL_CRIHO_STR-STUDENT sy-vline 
WA_PIQDB_NL_CRIHO_STR-CRIMESSAGE sy-vline 
WA_PIQDB_NL_CRIHO_STR-CRIMSGDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-SEQNR sy-vline 
WA_PIQDB_NL_CRIHO_STR-EDUCATIONCODE sy-vline 
WA_PIQDB_NL_CRIHO_STR-STUDYYEAR sy-vline 
WA_PIQDB_NL_CRIHO_STR-STUDYSESS sy-vline 
WA_PIQDB_NL_CRIHO_STR-OCWNUMBER sy-vline 
WA_PIQDB_NL_CRIHO_STR-FORMREG sy-vline 
WA_PIQDB_NL_CRIHO_STR-REGDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-BRINNUMBER sy-vline 
WA_PIQDB_NL_CRIHO_STR-EDUCATIONPHASE sy-vline 
WA_PIQDB_NL_CRIHO_STR-FORMOFEDUCATION sy-vline 
WA_PIQDB_NL_CRIHO_STR-FIRST_YEAR sy-vline 
WA_PIQDB_NL_CRIHO_STR-MONTH_FRM sy-vline 
WA_PIQDB_NL_CRIHO_STR-MONTH_TO sy-vline 
WA_PIQDB_NL_CRIHO_STR-DEFRAYCODE sy-vline 
WA_PIQDB_NL_CRIHO_STR-GENDER_KEY sy-vline 
WA_PIQDB_NL_CRIHO_STR-TERMINATEREASON sy-vline 
WA_PIQDB_NL_CRIHO_STR-TERMINATEDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-ERDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-ERCODE sy-vline 
WA_PIQDB_NL_CRIHO_STR-STUDYPROGRESSCOD sy-vline 
WA_PIQDB_NL_CRIHO_STR-PREEDUCATION sy-vline 
WA_PIQDB_NL_CRIHO_STR-PREEDUCATIONYEAR sy-vline 
WA_PIQDB_NL_CRIHO_STR-PROCESSCODE sy-vline 
WA_PIQDB_NL_CRIHO_STR-CRIMSGSENTDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-CRIIBGDATE sy-vline 
WA_PIQDB_NL_CRIHO_STR-SIGNALCODE1 sy-vline 
WA_PIQDB_NL_CRIHO_STR-SIGNALCODE2 sy-vline 
WA_PIQDB_NL_CRIHO_STR-SIGNALCODE3 sy-vline 
WA_PIQDB_NL_CRIHO_STR-SIGNALCODE4 sy-vline 
WA_PIQDB_NL_CRIHO_STR-ADDRIND sy-vline 
WA_PIQDB_NL_CRIHO_STR-GRADID sy-vline 
WA_PIQDB_NL_CRIHO_STR-EDUCATIONPGM sy-vline 
WA_PIQDB_NL_CRIHO_STR-USNAM sy-vline 
WA_PIQDB_NL_CRIHO_STR-CPUDT sy-vline 
WA_PIQDB_NL_CRIHO_STR-CPUTM sy-vline 
WA_PIQDB_NL_CRIHO_STR-FILENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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