ABAP Select data from SAP table IFMEISK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMEISK
*  INTO TABLE @DATA(IT_IFMEISK2).
*--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_IFMEISK INDEX 1 INTO DATA(WA_IFMEISK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMEISK>-TWAER = 1.
<IFMEISK>-IOF01 = 1.
<IFMEISK>-IOT01 = 1.
<IFMEISK>-IOF11 = 1.
<IFMEISK>-IOT11 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMEISK-IOF02, sy-vline,
  WA_IFMEISK-IOT02, sy-vline,
  WA_IFMEISK-IOF12, sy-vline,
  WA_IFMEISK-IOT12, sy-vline,
  WA_IFMEISK-IOF06, sy-vline,
  WA_IFMEISK-IOT06, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMEISK 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_IFMEISK 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_IFMEISK INTO WA_IFMEISK.


*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_IFMEISK_STR, 
TWAER TYPE STRING,
IOF01 TYPE STRING,
IOT01 TYPE STRING,
IOF11 TYPE STRING,
IOT11 TYPE STRING,
IOF02 TYPE STRING,
IOT02 TYPE STRING,
IOF12 TYPE STRING,
IOT12 TYPE STRING,
IOF06 TYPE STRING,
IOT06 TYPE STRING,
IOF16 TYPE STRING,
IOT16 TYPE STRING,
BUF01 TYPE STRING,
BUF02 TYPE STRING,
BUF03 TYPE STRING,
BUF94 TYPE STRING,
BUF95 TYPE STRING,
BUF99 TYPE STRING,
BUF04 TYPE STRING,
BUF05 TYPE STRING,
BGF01 TYPE STRING,
BGF02 TYPE STRING,
BGF03 TYPE STRING,
BGF94 TYPE STRING,
BGF95 TYPE STRING,
BGF99 TYPE STRING,
BGF04 TYPE STRING,
BGF05 TYPE STRING,
BPF01 TYPE STRING,
BPF02 TYPE STRING,
BPF03 TYPE STRING,
BPF99 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMEISK_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_IFMEISK_STR-TWAER sy-vline 
WA_IFMEISK_STR-IOF01 sy-vline 
WA_IFMEISK_STR-IOT01 sy-vline 
WA_IFMEISK_STR-IOF11 sy-vline 
WA_IFMEISK_STR-IOT11 sy-vline 
WA_IFMEISK_STR-IOF02 sy-vline 
WA_IFMEISK_STR-IOT02 sy-vline 
WA_IFMEISK_STR-IOF12 sy-vline 
WA_IFMEISK_STR-IOT12 sy-vline 
WA_IFMEISK_STR-IOF06 sy-vline 
WA_IFMEISK_STR-IOT06 sy-vline 
WA_IFMEISK_STR-IOF16 sy-vline 
WA_IFMEISK_STR-IOT16 sy-vline 
WA_IFMEISK_STR-BUF01 sy-vline 
WA_IFMEISK_STR-BUF02 sy-vline 
WA_IFMEISK_STR-BUF03 sy-vline 
WA_IFMEISK_STR-BUF94 sy-vline 
WA_IFMEISK_STR-BUF95 sy-vline 
WA_IFMEISK_STR-BUF99 sy-vline 
WA_IFMEISK_STR-BUF04 sy-vline 
WA_IFMEISK_STR-BUF05 sy-vline 
WA_IFMEISK_STR-BGF01 sy-vline 
WA_IFMEISK_STR-BGF02 sy-vline 
WA_IFMEISK_STR-BGF03 sy-vline 
WA_IFMEISK_STR-BGF94 sy-vline 
WA_IFMEISK_STR-BGF95 sy-vline 
WA_IFMEISK_STR-BGF99 sy-vline 
WA_IFMEISK_STR-BGF04 sy-vline 
WA_IFMEISK_STR-BGF05 sy-vline 
WA_IFMEISK_STR-BPF01 sy-vline 
WA_IFMEISK_STR-BPF02 sy-vline 
WA_IFMEISK_STR-BPF03 sy-vline 
WA_IFMEISK_STR-BPF99 sy-vline      INTO ld_text SEPARATED BY SPACE.

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