ABAP Select data from SAP table ALM_ME_PM_ORDER_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALM_ME_PM_ORDER_HEADER
*  INTO TABLE @DATA(IT_ALM_ME_PM_ORDER_HEADER2).
*--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_ALM_ME_PM_ORDER_HEADER INDEX 1 INTO DATA(WA_ALM_ME_PM_ORDER_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALM_ME_PM_ORDER_HEADER>-ORDERID = 1.
<ALM_ME_PM_ORDER_HEADER>-ORDER_TYPE = 1.
<ALM_ME_PM_ORDER_HEADER>-SHORT_TEXT = 1.
<ALM_ME_PM_ORDER_HEADER>-PRIORITY = 1.
<ALM_ME_PM_ORDER_HEADER>-EQUIPMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALM_ME_PM_ORDER_HEADER-ASSEMBLY, sy-vline,
  WA_ALM_ME_PM_ORDER_HEADER-SYSTCOND, sy-vline,
  WA_ALM_ME_PM_ORDER_HEADER-COMP_CODE, sy-vline,
  WA_ALM_ME_PM_ORDER_HEADER-PLANPLANT, sy-vline,
  WA_ALM_ME_PM_ORDER_HEADER-CUSTOMER, sy-vline,
  WA_ALM_ME_PM_ORDER_HEADER-MAINTPLAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALM_ME_PM_ORDER_HEADER 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_ALM_ME_PM_ORDER_HEADER 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_ALM_ME_PM_ORDER_HEADER INTO WA_ALM_ME_PM_ORDER_HEADER.


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

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

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

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

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

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

*Conversion exit TPLNR, internal->external for field FUNCT_LOC
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_PM_ORDER_HEADER-FUNCT_LOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_PM_ORDER_HEADER-FUNCT_LOC.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GERNR, internal->external for field SERIALNO
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_PM_ORDER_HEADER-SERIALNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_PM_ORDER_HEADER-SERIALNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SALES_ORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_PM_ORDER_HEADER-SALES_ORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_PM_ORDER_HEADER-SALES_ORD.
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_ALM_ME_PM_ORDER_HEADER_STR, 
ORDERID TYPE STRING,
ORDER_TYPE TYPE STRING,
SHORT_TEXT TYPE STRING,
PRIORITY TYPE STRING,
EQUIPMENT TYPE STRING,
ASSEMBLY TYPE STRING,
SYSTCOND TYPE STRING,
COMP_CODE TYPE STRING,
PLANPLANT TYPE STRING,
CUSTOMER TYPE STRING,
MAINTPLAN TYPE STRING,
MAINTITEM TYPE STRING,
REVISION TYPE STRING,
FUNCT_LOC TYPE STRING,
FINISH_DATE TYPE STRING,
START_DATE TYPE STRING,
S_STATUS TYPE STRING,
U_STATUS TYPE STRING,
REFERENCE_DATE TYPE STRING,
REFERENCE_TIME TYPE STRING,
MAINTACTTYPE TYPE STRING,
NOTIF_NO TYPE STRING,
FINISH_TIME TYPE STRING,
START_TIME TYPE STRING,
SERMAT TYPE STRING,
SERIALNO TYPE STRING,
DEVICEID TYPE STRING,
SALES_ORD TYPE STRING,
S_ORD_ITEM TYPE STRING,
RESP_WORKCENTER TYPE STRING,
PLANGROUP TYPE STRING,
NOTIF_TEXT TYPE STRING,
EQUIDESCR TYPE STRING,
FUNCLDESCR TYPE STRING,
MATL_DESC TYPE STRING,
CNTR_DESCR TYPE STRING,
CALC_MOTIVE TYPE STRING,
CREATE_DATE TYPE STRING,
CHANGE_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALM_ME_PM_ORDER_HEADER_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_ALM_ME_PM_ORDER_HEADER_STR-ORDERID sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-ORDER_TYPE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-SHORT_TEXT sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-PRIORITY sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-EQUIPMENT sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-ASSEMBLY sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-SYSTCOND sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-COMP_CODE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-PLANPLANT sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-CUSTOMER sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-MAINTPLAN sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-MAINTITEM sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-REVISION sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-FUNCT_LOC sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-FINISH_DATE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-START_DATE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-S_STATUS sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-U_STATUS sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-REFERENCE_DATE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-REFERENCE_TIME sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-MAINTACTTYPE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-NOTIF_NO sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-FINISH_TIME sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-START_TIME sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-SERMAT sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-SERIALNO sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-DEVICEID sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-SALES_ORD sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-S_ORD_ITEM sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-RESP_WORKCENTER sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-PLANGROUP sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-NOTIF_TEXT sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-EQUIDESCR sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-FUNCLDESCR sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-MATL_DESC sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-CNTR_DESCR sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-CALC_MOTIVE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-CREATE_DATE sy-vline 
WA_ALM_ME_PM_ORDER_HEADER_STR-CHANGE_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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