ABAP Select data from SAP table IMAINTPLNGBKTVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMAINTPLNGBKTVH
*  INTO TABLE @DATA(IT_IMAINTPLNGBKTVH2).
*--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_IMAINTPLNGBKTVH INDEX 1 INTO DATA(WA_IMAINTPLNGBKTVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMAINTPLNGBKTVH>-MANDT = 1.
<IMAINTPLNGBKTVH>-MAINTPLANNINGBUCKETUUID = 1.
<IMAINTPLNGBKTVH>-MAINTPLNGBUCKETLABEL = 1.
<IMAINTPLNGBKTVH>-MAINTPLANNINGBUCKETDESCRIPTION = 1.
<IMAINTPLNGBKTVH>-MAINTENANCEPLANNINGPLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMAINTPLNGBKTVH-REFMAINTPLANNINGBUCKET, sy-vline,
  WA_IMAINTPLNGBKTVH-MAINTPLNGBUCKETRECURRENCETYPE, sy-vline,
  WA_IMAINTPLNGBKTVH-MAINTPLANNINGBUCKETISREFBUCKET, sy-vline,
  WA_IMAINTPLNGBKTVH-PERSONRESPONSIBLE, sy-vline,
  WA_IMAINTPLNGBKTVH-MAINTPLNGBUCKETSTARTDATETIME, sy-vline,
  WA_IMAINTPLNGBKTVH-MAINTPLNGBUCKETENDDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMAINTPLNGBKTVH 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_IMAINTPLNGBKTVH 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_IMAINTPLNGBKTVH INTO WA_IMAINTPLNGBKTVH.


*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 PERSONRESPONSIBLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTPLNGBKTVH-PERSONRESPONSIBLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTPLNGBKTVH-PERSONRESPONSIBLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MAINTPLNGBUCKETDURATIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTPLNGBKTVH-MAINTPLNGBUCKETDURATIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTPLNGBKTVH-MAINTPLNGBUCKETDURATIONUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MAINTPLNGBCKTRCRRCINTERVALUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMAINTPLNGBKTVH-MAINTPLNGBCKTRCRRCINTERVALUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMAINTPLNGBKTVH-MAINTPLNGBCKTRCRRCINTERVALUNIT.
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_IMAINTPLNGBKTVH_STR, 
MANDT TYPE STRING,
MAINTPLANNINGBUCKETUUID TYPE STRING,
MAINTPLNGBUCKETLABEL TYPE STRING,
MAINTPLANNINGBUCKETDESCRIPTION TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
REFMAINTPLANNINGBUCKET TYPE STRING,
MAINTPLNGBUCKETRECURRENCETYPE TYPE STRING,
MAINTPLANNINGBUCKETISREFBUCKET TYPE STRING,
PERSONRESPONSIBLE TYPE STRING,
MAINTPLNGBUCKETSTARTDATETIME TYPE STRING,
MAINTPLNGBUCKETENDDATETIME TYPE STRING,
MAINTPLNGBUCKETDURATION TYPE STRING,
MAINTPLNGBUCKETDURATIONUNIT TYPE STRING,
MAINTPLNGBCKTRCRRCINTERVAL TYPE STRING,
MAINTPLNGBCKTRCRRCINTERVALUNIT TYPE STRING,
MAINTPLANNINGBUCKETTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMAINTPLNGBKTVH_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_IMAINTPLNGBKTVH_STR-MANDT sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLANNINGBUCKETUUID sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETLABEL sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLANNINGBUCKETDESCRIPTION sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_IMAINTPLNGBKTVH_STR-REFMAINTPLANNINGBUCKET sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETRECURRENCETYPE sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLANNINGBUCKETISREFBUCKET sy-vline 
WA_IMAINTPLNGBKTVH_STR-PERSONRESPONSIBLE sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETSTARTDATETIME sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETENDDATETIME sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETDURATION sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBUCKETDURATIONUNIT sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBCKTRCRRCINTERVAL sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLNGBCKTRCRRCINTERVALUNIT sy-vline 
WA_IMAINTPLNGBKTVH_STR-MAINTPLANNINGBUCKETTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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