ABAP Select data from SAP table PIQRULESTUDENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQRULESTUDENT
*  INTO TABLE @DATA(IT_PIQRULESTUDENT2).
*--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_PIQRULESTUDENT INDEX 1 INTO DATA(WA_PIQRULESTUDENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQRULESTUDENT>-PLVAR = 1.
<PIQRULESTUDENT>-OBJID = 1.
<PIQRULESTUDENT>-STUDENTNUMBER = 1.
<PIQRULESTUDENT>-PARTNER = 1.
<PIQRULESTUDENT>-KEYDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQRULESTUDENT-LANGU, sy-vline,
  WA_PIQRULESTUDENT-LANGU_ISO, sy-vline,
  WA_PIQRULESTUDENT-FORM_OF_ADDRESS_KEY, sy-vline,
  WA_PIQRULESTUDENT-FORM_OF_ADDRESS_KEY_TXT, sy-vline,
  WA_PIQRULESTUDENT-INITIALS, sy-vline,
  WA_PIQRULESTUDENT-FIRST_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQRULESTUDENT 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_PIQRULESTUDENT 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_PIQRULESTUDENT INTO WA_PIQRULESTUDENT.


*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 STUDENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQRULESTUDENT-STUDENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQRULESTUDENT-STUDENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQRULESTUDENT-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQRULESTUDENT-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQRULESTUDENT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQRULESTUDENT-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field DATE_BIRTH
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PIQRULESTUDENT-DATE_BIRTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQRULESTUDENT-DATE_BIRTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field CORRESP_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQRULESTUDENT-CORRESP_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQRULESTUDENT-CORRESP_LANGUAGE.
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_PIQRULESTUDENT_STR, 
PLVAR TYPE STRING,
OBJID TYPE STRING,
STUDENTNUMBER TYPE STRING,
PARTNER TYPE STRING,
KEYDATE TYPE STRING,
LANGU TYPE STRING,
LANGU_ISO TYPE STRING,
FORM_OF_ADDRESS_KEY TYPE STRING,
FORM_OF_ADDRESS_KEY_TXT TYPE STRING,
INITIALS TYPE STRING,
FIRST_NAME TYPE STRING,
LAST_NAME TYPE STRING,
MIDDLE_NAME TYPE STRING,
TITEL TYPE STRING,
NAME_AFFIX TYPE STRING,
ARISTOCRATIC_TITLE TYPE STRING,
NICKNAME TYPE STRING,
NAME_AT_BIRTH TYPE STRING,
DATE_BIRTH TYPE STRING,
BIRTHPLACE TYPE STRING,
COUNTRY_OF_BIRTH TYPE STRING,
COUNTRY_OF_BIRTH_ISO TYPE STRING,
NAMEOFBIRTHCOUNTRY TYPE STRING,
REGION_OF_BIRTH TYPE STRING,
NAMEOFBIRTHSTATE TYPE STRING,
NATIONALITY_AT_BIRTH TYPE STRING,
NATIONALITY_AT_BIRTH_ISO TYPE STRING,
NATIONALITY_AT_BIRTH_TXT TYPE STRING,
NATIONALITY TYPE STRING,
NATIONALITY_ISO TYPE STRING,
NATIONALITY_TXT TYPE STRING,
SECOND_NATIONALITY TYPE STRING,
SECOND_NATIONALITY_ISO TYPE STRING,
SECOND_NATIONALITY_TXT TYPE STRING,
THIRD_NATIONALITY TYPE STRING,
THIRD_NATIONALITY_ISO TYPE STRING,
THIRD_NATIONALITY_TXT TYPE STRING,
GENDER_KEY TYPE STRING,
GENDER_KEY_TXT TYPE STRING,
MARITAL_STATUS TYPE STRING,
MARITAL_STATUS_TXT TYPE STRING,
PERSIDNO TYPE STRING,
CORRESP_LANGUAGE TYPE STRING,
CORRESP_LANGUAGE_ISO TYPE STRING,
CORRESP_LANGUAGE_TXT TYPE STRING,
RELIGION TYPE STRING,
RELIGION_TXT TYPE STRING,
ETHNIC_GRP TYPE STRING,
ETHNIC_GRP_TXT TYPE STRING,
JOB TYPE STRING,
JOB_TXT TYPE STRING,
SOCIAL_GRP TYPE STRING,
SOCIAL_GRP_TXT TYPE STRING,
SERVICE_STATUS TYPE STRING,
SERVICE_STATUS_TXT TYPE STRING,
SERVICE_NUMBER TYPE STRING,
VETERAN_NUMBER TYPE STRING,
DRIVERS_LICENSE_NO TYPE STRING,
DRIVERS_LICENSE_COUNTRY TYPE STRING,
DRIVERS_LICENSE_COUNTRY_ISO TYPE STRING,
NAMEOFLICENCECOUNTRY TYPE STRING,
DRIVERS_LICENSE_REGION TYPE STRING,
NAMEOFLICENSESTATE TYPE STRING,
CHALL_GRP TYPE STRING,
CHALL_GRP_TXT TYPE STRING,
CHALL_PERC TYPE STRING,
CHALL_TYPE TYPE STRING,
CHALL_TYPE_TXT TYPE STRING,
DATE_CHALL_CERT TYPE STRING,
RESIDENCY_STATUS TYPE STRING,
RESIDENCY_STATUS_TXT TYPE STRING,
RESIDENCY_COUNTRY TYPE STRING,
RESIDENCY_COUNTRY_ISO TYPE STRING,
NAMEOFRESIDENCYCOUNTRY TYPE STRING,
RESIDENCY_REGION TYPE STRING,
NAMEOFRESIDENCYSTATE TYPE STRING,
RESIDENCY_COUNTY TYPE STRING,
NAMEOFRESIDENCYCOUNTY TYPE STRING,
ORIGIN TYPE STRING,
ORIGIN_TXT TYPE STRING,
ALTERNAT_STUDENT_NO TYPE STRING,
STUDENTGRP TYPE STRING,
STUDENTGRP_TXT TYPE STRING,
STUDENT_FEE_CATEG TYPE STRING,
STUDENT_FEE_CATEG_TXT TYPE STRING,
BENEFIT_CATEG TYPE STRING,
BENEFIT_CATEG_TXT TYPE STRING,
ASSIGNED_ORGUNIT TYPE STRING,
ASSIGNED_ORGUNIT_TXT TYPE STRING,
ASSIGNED_ORGUNIT_SHT TYPE STRING,
CAMPUS TYPE STRING,
CAMPUS_TXT TYPE STRING,
CAMPUS_SHT TYPE STRING,
CONFIDENTIALITY TYPE STRING,
CONFIDENTIALITY_TXT TYPE STRING,
PRINCIPAL_ORGUNIT TYPE STRING,
PRINCIPAL_ORGUNIT_SHT TYPE STRING,
PRINCIPAL_ORGUNIT_TXT TYPE STRING,
DERIVED_ORGUNIT TYPE STRING,
DERIVED_ORGUNIT_SHT TYPE STRING,
DERIVED_ORGUNIT_TXT TYPE STRING,
FT_PT_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQRULESTUDENT_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_PIQRULESTUDENT_STR-PLVAR sy-vline 
WA_PIQRULESTUDENT_STR-OBJID sy-vline 
WA_PIQRULESTUDENT_STR-STUDENTNUMBER sy-vline 
WA_PIQRULESTUDENT_STR-PARTNER sy-vline 
WA_PIQRULESTUDENT_STR-KEYDATE sy-vline 
WA_PIQRULESTUDENT_STR-LANGU sy-vline 
WA_PIQRULESTUDENT_STR-LANGU_ISO sy-vline 
WA_PIQRULESTUDENT_STR-FORM_OF_ADDRESS_KEY sy-vline 
WA_PIQRULESTUDENT_STR-FORM_OF_ADDRESS_KEY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-INITIALS sy-vline 
WA_PIQRULESTUDENT_STR-FIRST_NAME sy-vline 
WA_PIQRULESTUDENT_STR-LAST_NAME sy-vline 
WA_PIQRULESTUDENT_STR-MIDDLE_NAME sy-vline 
WA_PIQRULESTUDENT_STR-TITEL sy-vline 
WA_PIQRULESTUDENT_STR-NAME_AFFIX sy-vline 
WA_PIQRULESTUDENT_STR-ARISTOCRATIC_TITLE sy-vline 
WA_PIQRULESTUDENT_STR-NICKNAME sy-vline 
WA_PIQRULESTUDENT_STR-NAME_AT_BIRTH sy-vline 
WA_PIQRULESTUDENT_STR-DATE_BIRTH sy-vline 
WA_PIQRULESTUDENT_STR-BIRTHPLACE sy-vline 
WA_PIQRULESTUDENT_STR-COUNTRY_OF_BIRTH sy-vline 
WA_PIQRULESTUDENT_STR-COUNTRY_OF_BIRTH_ISO sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFBIRTHCOUNTRY sy-vline 
WA_PIQRULESTUDENT_STR-REGION_OF_BIRTH sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFBIRTHSTATE sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY_AT_BIRTH sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY_AT_BIRTH_ISO sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY_AT_BIRTH_TXT sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY_ISO sy-vline 
WA_PIQRULESTUDENT_STR-NATIONALITY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-SECOND_NATIONALITY sy-vline 
WA_PIQRULESTUDENT_STR-SECOND_NATIONALITY_ISO sy-vline 
WA_PIQRULESTUDENT_STR-SECOND_NATIONALITY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-THIRD_NATIONALITY sy-vline 
WA_PIQRULESTUDENT_STR-THIRD_NATIONALITY_ISO sy-vline 
WA_PIQRULESTUDENT_STR-THIRD_NATIONALITY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-GENDER_KEY sy-vline 
WA_PIQRULESTUDENT_STR-GENDER_KEY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-MARITAL_STATUS sy-vline 
WA_PIQRULESTUDENT_STR-MARITAL_STATUS_TXT sy-vline 
WA_PIQRULESTUDENT_STR-PERSIDNO sy-vline 
WA_PIQRULESTUDENT_STR-CORRESP_LANGUAGE sy-vline 
WA_PIQRULESTUDENT_STR-CORRESP_LANGUAGE_ISO sy-vline 
WA_PIQRULESTUDENT_STR-CORRESP_LANGUAGE_TXT sy-vline 
WA_PIQRULESTUDENT_STR-RELIGION sy-vline 
WA_PIQRULESTUDENT_STR-RELIGION_TXT sy-vline 
WA_PIQRULESTUDENT_STR-ETHNIC_GRP sy-vline 
WA_PIQRULESTUDENT_STR-ETHNIC_GRP_TXT sy-vline 
WA_PIQRULESTUDENT_STR-JOB sy-vline 
WA_PIQRULESTUDENT_STR-JOB_TXT sy-vline 
WA_PIQRULESTUDENT_STR-SOCIAL_GRP sy-vline 
WA_PIQRULESTUDENT_STR-SOCIAL_GRP_TXT sy-vline 
WA_PIQRULESTUDENT_STR-SERVICE_STATUS sy-vline 
WA_PIQRULESTUDENT_STR-SERVICE_STATUS_TXT sy-vline 
WA_PIQRULESTUDENT_STR-SERVICE_NUMBER sy-vline 
WA_PIQRULESTUDENT_STR-VETERAN_NUMBER sy-vline 
WA_PIQRULESTUDENT_STR-DRIVERS_LICENSE_NO sy-vline 
WA_PIQRULESTUDENT_STR-DRIVERS_LICENSE_COUNTRY sy-vline 
WA_PIQRULESTUDENT_STR-DRIVERS_LICENSE_COUNTRY_ISO sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFLICENCECOUNTRY sy-vline 
WA_PIQRULESTUDENT_STR-DRIVERS_LICENSE_REGION sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFLICENSESTATE sy-vline 
WA_PIQRULESTUDENT_STR-CHALL_GRP sy-vline 
WA_PIQRULESTUDENT_STR-CHALL_GRP_TXT sy-vline 
WA_PIQRULESTUDENT_STR-CHALL_PERC sy-vline 
WA_PIQRULESTUDENT_STR-CHALL_TYPE sy-vline 
WA_PIQRULESTUDENT_STR-CHALL_TYPE_TXT sy-vline 
WA_PIQRULESTUDENT_STR-DATE_CHALL_CERT sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_STATUS sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_STATUS_TXT sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_COUNTRY sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_COUNTRY_ISO sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFRESIDENCYCOUNTRY sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_REGION sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFRESIDENCYSTATE sy-vline 
WA_PIQRULESTUDENT_STR-RESIDENCY_COUNTY sy-vline 
WA_PIQRULESTUDENT_STR-NAMEOFRESIDENCYCOUNTY sy-vline 
WA_PIQRULESTUDENT_STR-ORIGIN sy-vline 
WA_PIQRULESTUDENT_STR-ORIGIN_TXT sy-vline 
WA_PIQRULESTUDENT_STR-ALTERNAT_STUDENT_NO sy-vline 
WA_PIQRULESTUDENT_STR-STUDENTGRP sy-vline 
WA_PIQRULESTUDENT_STR-STUDENTGRP_TXT sy-vline 
WA_PIQRULESTUDENT_STR-STUDENT_FEE_CATEG sy-vline 
WA_PIQRULESTUDENT_STR-STUDENT_FEE_CATEG_TXT sy-vline 
WA_PIQRULESTUDENT_STR-BENEFIT_CATEG sy-vline 
WA_PIQRULESTUDENT_STR-BENEFIT_CATEG_TXT sy-vline 
WA_PIQRULESTUDENT_STR-ASSIGNED_ORGUNIT sy-vline 
WA_PIQRULESTUDENT_STR-ASSIGNED_ORGUNIT_TXT sy-vline 
WA_PIQRULESTUDENT_STR-ASSIGNED_ORGUNIT_SHT sy-vline 
WA_PIQRULESTUDENT_STR-CAMPUS sy-vline 
WA_PIQRULESTUDENT_STR-CAMPUS_TXT sy-vline 
WA_PIQRULESTUDENT_STR-CAMPUS_SHT sy-vline 
WA_PIQRULESTUDENT_STR-CONFIDENTIALITY sy-vline 
WA_PIQRULESTUDENT_STR-CONFIDENTIALITY_TXT sy-vline 
WA_PIQRULESTUDENT_STR-PRINCIPAL_ORGUNIT sy-vline 
WA_PIQRULESTUDENT_STR-PRINCIPAL_ORGUNIT_SHT sy-vline 
WA_PIQRULESTUDENT_STR-PRINCIPAL_ORGUNIT_TXT sy-vline 
WA_PIQRULESTUDENT_STR-DERIVED_ORGUNIT sy-vline 
WA_PIQRULESTUDENT_STR-DERIVED_ORGUNIT_SHT sy-vline 
WA_PIQRULESTUDENT_STR-DERIVED_ORGUNIT_TXT sy-vline 
WA_PIQRULESTUDENT_STR-FT_PT_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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