ABAP Select data from SAP table IMASTEREQP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMASTEREQP
*  INTO TABLE @DATA(IT_IMASTEREQP2).
*--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_IMASTEREQP INDEX 1 INTO DATA(WA_IMASTEREQP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMASTEREQP>-MANDT = 1.
<IMASTEREQP>-EQUIPMENT = 1.
<IMASTEREQP>-DFSMAINTTAILNUMBER = 1.
<IMASTEREQP>-DFSMAINTREMARKTEXT = 1.
<IMASTEREQP>-DFSMAINTACTUALCONFIGURATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMASTEREQP-DFSMAINTISFOREIGNEQUIPMENT, sy-vline,
  WA_IMASTEREQP-DFSMAINTPRIORITIZATIONCATEGORY, sy-vline,
  WA_IMASTEREQP-DFSMAINTUSAGEPREFPRIORITY, sy-vline,
  WA_IMASTEREQP-DFSMAINTEQUIPOPLOBJNMBR, sy-vline,
  WA_IMASTEREQP-DFSMAINTMASTEREQUIPTECHOBJNMBR, sy-vline,
  WA_IMASTEREQP-DFSMAINTMODELIDENTIFICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMASTEREQP 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_IMASTEREQP 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_IMASTEREQP INTO WA_IMASTEREQP.


*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_IMASTEREQP-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMASTEREQP-EQUIPMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DFSMAINTMEASURINGPOINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMASTEREQP-DFSMAINTMEASURINGPOINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMASTEREQP-DFSMAINTMEASURINGPOINT.
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_IMASTEREQP_STR, 
MANDT TYPE STRING,
EQUIPMENT TYPE STRING,
DFSMAINTTAILNUMBER TYPE STRING,
DFSMAINTREMARKTEXT TYPE STRING,
DFSMAINTACTUALCONFIGURATION TYPE STRING,
DFSMAINTISFOREIGNEQUIPMENT TYPE STRING,
DFSMAINTPRIORITIZATIONCATEGORY TYPE STRING,
DFSMAINTUSAGEPREFPRIORITY TYPE STRING,
DFSMAINTEQUIPOPLOBJNMBR TYPE STRING,
DFSMAINTMASTEREQUIPTECHOBJNMBR TYPE STRING,
DFSMAINTMODELIDENTIFICATION TYPE STRING,
DFSMAINTMEASURINGPOINT TYPE STRING,
DFSMAINTSITEID TYPE STRING,
DFSMAINTISMASTEREQUIPMENT TYPE STRING,
DFSMAINTTECHSTSAGGRGNISSTPPD TYPE STRING,
DFSMAINTEQUIPMENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMASTEREQP_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_IMASTEREQP_STR-MANDT sy-vline 
WA_IMASTEREQP_STR-EQUIPMENT sy-vline 
WA_IMASTEREQP_STR-DFSMAINTTAILNUMBER sy-vline 
WA_IMASTEREQP_STR-DFSMAINTREMARKTEXT sy-vline 
WA_IMASTEREQP_STR-DFSMAINTACTUALCONFIGURATION sy-vline 
WA_IMASTEREQP_STR-DFSMAINTISFOREIGNEQUIPMENT sy-vline 
WA_IMASTEREQP_STR-DFSMAINTPRIORITIZATIONCATEGORY sy-vline 
WA_IMASTEREQP_STR-DFSMAINTUSAGEPREFPRIORITY sy-vline 
WA_IMASTEREQP_STR-DFSMAINTEQUIPOPLOBJNMBR sy-vline 
WA_IMASTEREQP_STR-DFSMAINTMASTEREQUIPTECHOBJNMBR sy-vline 
WA_IMASTEREQP_STR-DFSMAINTMODELIDENTIFICATION sy-vline 
WA_IMASTEREQP_STR-DFSMAINTMEASURINGPOINT sy-vline 
WA_IMASTEREQP_STR-DFSMAINTSITEID sy-vline 
WA_IMASTEREQP_STR-DFSMAINTISMASTEREQUIPMENT sy-vline 
WA_IMASTEREQP_STR-DFSMAINTTECHSTSAGGRGNISSTPPD sy-vline 
WA_IMASTEREQP_STR-DFSMAINTEQUIPMENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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