ABAP Select data from SAP table EASIMINSTUSE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EASIMINSTUSE
*  INTO TABLE @DATA(IT_EASIMINSTUSE2).
*--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_EASIMINSTUSE INDEX 1 INTO DATA(WA_EASIMINSTUSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EASIMINSTUSE>-LAST_ENDABRPE = 1.
<EASIMINSTUSE>-NEXT_CONTRACT = 1.
<EASIMINSTUSE>-PREV_ERCH = 1.
<EASIMINSTUSE>-IEANL = 1.
<EASIMINSTUSE>-IETTIFN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EASIMINSTUSE-IETTIFB, sy-vline,
  WA_EASIMINSTUSE-IALLEVER, sy-vline,
  WA_EASIMINSTUSE-IEABL, sy-vline,
  WA_EASIMINSTUSE-IEABLG, sy-vline,
  WA_EASIMINSTUSE-INST_STRUC, sy-vline,
  WA_EASIMINSTUSE-IETRG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EASIMINSTUSE 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_EASIMINSTUSE 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_EASIMINSTUSE INTO WA_EASIMINSTUSE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EASIMINSTUSE_STR, 
LAST_ENDABRPE TYPE STRING,
NEXT_CONTRACT TYPE STRING,
PREV_ERCH TYPE STRING,
IEANL TYPE STRING,
IETTIFN TYPE STRING,
IETTIFB TYPE STRING,
IALLEVER TYPE STRING,
IEABL TYPE STRING,
IEABLG TYPE STRING,
INST_STRUC TYPE STRING,
IETRG TYPE STRING,
IETRG_SEQ TYPE STRING,
IEASTE TYPE STRING,
ITOUEXCEPTION TYPE STRING,
ITOUEXCEPTRESP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EASIMINSTUSE_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_EASIMINSTUSE_STR-LAST_ENDABRPE sy-vline 
WA_EASIMINSTUSE_STR-NEXT_CONTRACT sy-vline 
WA_EASIMINSTUSE_STR-PREV_ERCH sy-vline 
WA_EASIMINSTUSE_STR-IEANL sy-vline 
WA_EASIMINSTUSE_STR-IETTIFN sy-vline 
WA_EASIMINSTUSE_STR-IETTIFB sy-vline 
WA_EASIMINSTUSE_STR-IALLEVER sy-vline 
WA_EASIMINSTUSE_STR-IEABL sy-vline 
WA_EASIMINSTUSE_STR-IEABLG sy-vline 
WA_EASIMINSTUSE_STR-INST_STRUC sy-vline 
WA_EASIMINSTUSE_STR-IETRG sy-vline 
WA_EASIMINSTUSE_STR-IETRG_SEQ sy-vline 
WA_EASIMINSTUSE_STR-IEASTE sy-vline 
WA_EASIMINSTUSE_STR-ITOUEXCEPTION sy-vline 
WA_EASIMINSTUSE_STR-ITOUEXCEPTRESP sy-vline      INTO ld_text SEPARATED BY SPACE.

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