ABAP Select data from SAP table ICRQVERSENVLMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRQVERSENVLMT
*  INTO TABLE @DATA(IT_ICRQVERSENVLMT2).
*--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_ICRQVERSENVLMT INDEX 1 INTO DATA(WA_ICRQVERSENVLMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRQVERSENVLMT>-MANDT = 1.
<ICRQVERSENVLMT>-CMPLRQVERSENVRNMTLLIMITUUID = 1.
<ICRQVERSENVLMT>-CMPLRQVERSPARAGRAPHUUID = 1.
<ICRQVERSENVLMT>-CMPLRQVERSUUID = 1.
<ICRQVERSENVLMT>-CREATIONUTCDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRQVERSENVLMT-CREATEDBYUSER, sy-vline,
  WA_ICRQVERSENVLMT-LASTCHANGEUTCDATETIME, sy-vline,
  WA_ICRQVERSENVLMT-LASTCHANGEDBYUSER, sy-vline,
  WA_ICRQVERSENVLMT-CMPLRQENVRNMTLLIMITNAME, sy-vline,
  WA_ICRQVERSENVLMT-CMPLRQENVRNMTLLIMITTYPE, sy-vline,
  WA_ICRQVERSENVLMT-CMPLRQENVRNMTLLIMITSUBJECTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRQVERSENVLMT 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_ICRQVERSENVLMT 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_ICRQVERSENVLMT INTO WA_ICRQVERSENVLMT.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICRQVERSENVLMT-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRQVERSENVLMT-UNITOFMEASURE.
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_ICRQVERSENVLMT_STR, 
MANDT TYPE STRING,
CMPLRQVERSENVRNMTLLIMITUUID TYPE STRING,
CMPLRQVERSPARAGRAPHUUID TYPE STRING,
CMPLRQVERSUUID TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CMPLRQENVRNMTLLIMITNAME TYPE STRING,
CMPLRQENVRNMTLLIMITTYPE TYPE STRING,
CMPLRQENVRNMTLLIMITSUBJECTTYPE TYPE STRING,
CMPLRQENVRNMTLUPPERLIMITOPTR TYPE STRING,
CMPLRQENVRNMTLUPPERLIMITVALUE TYPE STRING,
UNITOFMEASURE TYPE STRING,
CMPLRQMIGRATIONSOURCE TYPE STRING,
CMPLRQVERSPARAGRAPHID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRQVERSENVLMT_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_ICRQVERSENVLMT_STR-MANDT sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQVERSENVRNMTLLIMITUUID sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQVERSPARAGRAPHUUID sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQVERSUUID sy-vline 
WA_ICRQVERSENVLMT_STR-CREATIONUTCDATETIME sy-vline 
WA_ICRQVERSENVLMT_STR-CREATEDBYUSER sy-vline 
WA_ICRQVERSENVLMT_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ICRQVERSENVLMT_STR-LASTCHANGEDBYUSER sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQENVRNMTLLIMITNAME sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQENVRNMTLLIMITTYPE sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQENVRNMTLLIMITSUBJECTTYPE sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQENVRNMTLUPPERLIMITOPTR sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQENVRNMTLUPPERLIMITVALUE sy-vline 
WA_ICRQVERSENVLMT_STR-UNITOFMEASURE sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQMIGRATIONSOURCE sy-vline 
WA_ICRQVERSENVLMT_STR-CMPLRQVERSPARAGRAPHID sy-vline      INTO ld_text SEPARATED BY SPACE.

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