ABAP Select data from SAP table ALM_ME_EQUIPMENT_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_EQUIPMENT_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_EQUIPMENT_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_EQUIPMENT_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_EQUIPMENT_HEADER TYPE STANDARD TABLE OF ALM_ME_EQUIPMENT_HEADER,
      WA_ALM_ME_EQUIPMENT_HEADER TYPE ALM_ME_EQUIPMENT_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_EQUIPMENT_HEADER> TYPE ALM_ME_EQUIPMENT_HEADER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALM_ME_EQUIPMENT_HEADER
*  INTO TABLE @DATA(IT_ALM_ME_EQUIPMENT_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_EQUIPMENT_HEADER INDEX 1 INTO DATA(WA_ALM_ME_EQUIPMENT_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALM_ME_EQUIPMENT_HEADER>-EQUIPMENT = 1.
<ALM_ME_EQUIPMENT_HEADER>-EQUICATGRY = 1.
<ALM_ME_EQUIPMENT_HEADER>-OBJECTTYPE = 1.
<ALM_ME_EQUIPMENT_HEADER>-DESCRIPT = 1.
<ALM_ME_EQUIPMENT_HEADER>-FUNCLOC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALM_ME_EQUIPMENT_HEADER-SUPEREQUI, sy-vline,
  WA_ALM_ME_EQUIPMENT_HEADER-CONSTTYPE, sy-vline,
  WA_ALM_ME_EQUIPMENT_HEADER-MATERIAL, sy-vline,
  WA_ALM_ME_EQUIPMENT_HEADER-SERIALNO, sy-vline,
  WA_ALM_ME_EQUIPMENT_HEADER-TECHID, sy-vline,
  WA_ALM_ME_EQUIPMENT_HEADER-PLANPLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALM_ME_EQUIPMENT_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_EQUIPMENT_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_EQUIPMENT_HEADER INTO WA_ALM_ME_EQUIPMENT_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 EQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_EQUIPMENT_HEADER-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_EQUIPMENT_HEADER-EQUIPMENT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit GERNR, internal->external for field SERIALNO
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_EQUIPMENT_HEADER-SERIALNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_EQUIPMENT_HEADER-SERIALNO.
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_EQUIPMENT_HEADER_STR, 
EQUIPMENT TYPE STRING,
EQUICATGRY TYPE STRING,
OBJECTTYPE TYPE STRING,
DESCRIPT TYPE STRING,
FUNCLOC TYPE STRING,
SUPEREQUI TYPE STRING,
CONSTTYPE TYPE STRING,
MATERIAL TYPE STRING,
SERIALNO TYPE STRING,
TECHID TYPE STRING,
PLANPLANT TYPE STRING,
WORKCENTER TYPE STRING,
PLANGROUP TYPE STRING,
CATPROFILE TYPE STRING,
CHANGE_DATE TYPE STRING,
OBJECT_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALM_ME_EQUIPMENT_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_EQUIPMENT_HEADER_STR-EQUIPMENT sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-EQUICATGRY sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-OBJECTTYPE sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-DESCRIPT sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-FUNCLOC sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-SUPEREQUI sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-CONSTTYPE sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-MATERIAL sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-SERIALNO sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-TECHID sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-PLANPLANT sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-WORKCENTER sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-PLANGROUP sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-CATPROFILE sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-CHANGE_DATE sy-vline 
WA_ALM_ME_EQUIPMENT_HEADER_STR-OBJECT_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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