ABAP Select data from SAP table ICRQTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRQTP
*  INTO TABLE @DATA(IT_ICRQTP2).
*--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_ICRQTP INDEX 1 INTO DATA(WA_ICRQTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRQTP>-MANDT = 1.
<ICRQTP>-CHMLCMPLNCREQUESTUUID = 1.
<ICRQTP>-CREATIONUTCDATETIME = 1.
<ICRQTP>-CREATEDBYUSER = 1.
<ICRQTP>-LASTCHANGEUTCDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRQTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ICRQTP-CHMLCMPLNCREQUESTDUEDATE, sy-vline,
  WA_ICRQTP-CHMLCMPLNCREQCMPLNCPROC, sy-vline,
  WA_ICRQTP-CHMLCMPLNCREQUESTORIGINTYPE, sy-vline,
  WA_ICRQTP-CHMLCMPLNCREQORIGINPROC, sy-vline,
  WA_ICRQTP-CHMLCMPLNCREQUESTPRGRSSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRQTP 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_ICRQTP 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_ICRQTP INTO WA_ICRQTP.


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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICRQTP-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRQTP-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRQTP-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRQTP-SUPPLIER.
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_ICRQTP_STR, 
MANDT TYPE STRING,
CHMLCMPLNCREQUESTUUID TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHMLCMPLNCREQUESTDUEDATE TYPE STRING,
CHMLCMPLNCREQCMPLNCPROC TYPE STRING,
CHMLCMPLNCREQUESTORIGINTYPE TYPE STRING,
CHMLCMPLNCREQORIGINPROC TYPE STRING,
CHMLCMPLNCREQUESTPRGRSSTATUS TYPE STRING,
CHMLCMPLNCBUSINESSPROCESS TYPE STRING,
CHMLCMPLNCREQREQUESTER TYPE STRING,
CHMLCMPLNCREQBPREQUESTER TYPE STRING,
CHMLCMPLNCREQBPPROCESSOR TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CHMLCMPLNCPRODUUID TYPE STRING,
MATERIAL TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESDOCUMENTITEM TYPE STRING,
CHMLCMPLNCREQLOGISTICDOCCAT TYPE STRING,
CHMLCMPLNCREQUESTREMARK TYPE STRING,
CHMLCMPLNCREQDETAILS TYPE STRING,
PRODCMPLNCLOGSDOCUMENT TYPE STRING,
PRODCMPLNCLOGSDOCUMENTITEM TYPE STRING,
BUSINESSSYSTEMNAME TYPE STRING,
DNGRSGOODSMODEOFTRANSPORT TYPE STRING,
SUPPLIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRQTP_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_ICRQTP_STR-MANDT sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQUESTUUID sy-vline 
WA_ICRQTP_STR-CREATIONUTCDATETIME sy-vline 
WA_ICRQTP_STR-CREATEDBYUSER sy-vline 
WA_ICRQTP_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ICRQTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQUESTDUEDATE sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQCMPLNCPROC sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQUESTORIGINTYPE sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQORIGINPROC sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQUESTPRGRSSTATUS sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCBUSINESSPROCESS sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQREQUESTER sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQBPREQUESTER sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQBPPROCESSOR sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCPRODUUID sy-vline 
WA_ICRQTP_STR-MATERIAL sy-vline 
WA_ICRQTP_STR-SALESDOCUMENT sy-vline 
WA_ICRQTP_STR-SALESDOCUMENTITEM sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQLOGISTICDOCCAT sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQUESTREMARK sy-vline 
WA_ICRQTP_STR-CHMLCMPLNCREQDETAILS sy-vline 
WA_ICRQTP_STR-PRODCMPLNCLOGSDOCUMENT sy-vline 
WA_ICRQTP_STR-PRODCMPLNCLOGSDOCUMENTITEM sy-vline 
WA_ICRQTP_STR-BUSINESSSYSTEMNAME sy-vline 
WA_ICRQTP_STR-DNGRSGOODSMODEOFTRANSPORT sy-vline 
WA_ICRQTP_STR-SUPPLIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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