ABAP Select data from SAP table ISMAINTENANCECYCLETP into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMAINTENANCECYCLETP
*  INTO TABLE @DATA(IT_ISMAINTENANCECYCLETP2).
*--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_ISMAINTENANCECYCLETP INDEX 1 INTO DATA(WA_ISMAINTENANCECYCLETP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISMAINTENANCECYCLETP ASSIGNING <ISMAINTENANCECYCLETP>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMAINTENANCECYCLETP>-KEY = 1.
<ISMAINTENANCECYCLETP>-PARENT_KEY = 1.
<ISMAINTENANCECYCLETP>-ROOT_KEY = 1.
<ISMAINTENANCECYCLETP>-MAINTENANCEPLAN = 1.
<ISMAINTENANCECYCLETP>-NUMBEROFCONTROLTABLEENTITIES = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMAINTENANCECYCLETP-COMPARISONOPERATOR, sy-vline,
WA_ISMAINTENANCECYCLETP-MAINTPLANCYCLEINTERVALCOUNT, sy-vline,
WA_ISMAINTENANCECYCLETP-MAINTENANCETASKPERFORMANCEUNIT, sy-vline,
WA_ISMAINTENANCECYCLETP-MAINTPLANCYCLEDESC, sy-vline,
WA_ISMAINTENANCECYCLETP-LANGUAGE, sy-vline,
WA_ISMAINTENANCECYCLETP-MEASURINGPOINT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_ISMAINTENANCECYCLETP 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_ISMAINTENANCECYCLETP 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_ISMAINTENANCECYCLETP INTO WA_ISMAINTENANCECYCLETP. *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 MAINTENANCEPLAN CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_ISMAINTENANCECYCLETP-MAINTENANCEPLAN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_ISMAINTENANCECYCLETP-MAINTENANCEPLAN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field MEASURINGPOINT CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_ISMAINTENANCECYCLETP-MEASURINGPOINT IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_ISMAINTENANCECYCLETP-MEASURINGPOINT.
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_ISMAINTENANCECYCLETP_STR,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
MAINTENANCEPLAN TYPE STRING,
NUMBEROFCONTROLTABLEENTITIES TYPE STRING,
COMPARISONOPERATOR TYPE STRING,
MAINTPLANCYCLEINTERVALCOUNT TYPE STRING,
MAINTENANCETASKPERFORMANCEUNIT TYPE STRING,
MAINTPLANCYCLEDESC TYPE STRING,
LANGUAGE TYPE STRING,
MEASURINGPOINT TYPE STRING,
MAINTPLANCYCLESTARTOFFSETVALUE TYPE STRING,
MAINTCYCLENEXTPLNDCNTRRDNG TYPE STRING,
EVENTSCHEDULINGISINACTIVE TYPE STRING,
CYCLESETSEQUENCE TYPE STRING,
CYCLESETSEQUENCEREPEATFACTOR TYPE STRING,END OF T_EKKO_STR. DATA: WA_ISMAINTENANCECYCLETP_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_ISMAINTENANCECYCLETP_STR-KEY sy-vline
WA_ISMAINTENANCECYCLETP_STR-PARENT_KEY sy-vline
WA_ISMAINTENANCECYCLETP_STR-ROOT_KEY sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTENANCEPLAN sy-vline
WA_ISMAINTENANCECYCLETP_STR-NUMBEROFCONTROLTABLEENTITIES sy-vline
WA_ISMAINTENANCECYCLETP_STR-COMPARISONOPERATOR sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTPLANCYCLEINTERVALCOUNT sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTENANCETASKPERFORMANCEUNIT sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTPLANCYCLEDESC sy-vline
WA_ISMAINTENANCECYCLETP_STR-LANGUAGE sy-vline
WA_ISMAINTENANCECYCLETP_STR-MEASURINGPOINT sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTPLANCYCLESTARTOFFSETVALUE sy-vline
WA_ISMAINTENANCECYCLETP_STR-MAINTCYCLENEXTPLNDCNTRRDNG sy-vline
WA_ISMAINTENANCECYCLETP_STR-EVENTSCHEDULINGISINACTIVE sy-vline
WA_ISMAINTENANCECYCLETP_STR-CYCLESETSEQUENCE sy-vline
WA_ISMAINTENANCECYCLETP_STR-CYCLESETSEQUENCEREPEATFACTOR sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.