ABAP Select data from SAP table IEQS_IO_01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IEQS_IO_01 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 IEQS_IO_01. 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 IEQS_IO_01 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_IEQS_IO_01 TYPE STANDARD TABLE OF IEQS_IO_01,
      WA_IEQS_IO_01 TYPE IEQS_IO_01,
      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: <IEQS_IO_01> TYPE IEQS_IO_01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IEQS_IO_01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IEQS_IO_01
  INTO TABLE IT_IEQS_IO_01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEQS_IO_01
*  INTO TABLE @DATA(IT_IEQS_IO_012).
*--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_IEQS_IO_01 INDEX 1 INTO DATA(WA_IEQS_IO_012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IEQS_IO_01 ASSIGNING <IEQS_IO_01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEQS_IO_01>-EQUNR = 1.
<IEQS_IO_01>-DATAB = 1.
<IEQS_IO_01>-TIMAB = 1.
<IEQS_IO_01>-DATBI = 1.
<IEQS_IO_01>-REF_EQUNR = 1.

ENDLOOP.

LOOP AT IT_IEQS_IO_01 INTO WA_IEQS_IO_01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEQS_IO_01-REF_BACKUP, sy-vline,
  WA_IEQS_IO_01-EQLFN, sy-vline,
  WA_IEQS_IO_01-TYPTX, sy-vline,
  WA_IEQS_IO_01-EQTYP, sy-vline,
  WA_IEQS_IO_01-EQKTX, sy-vline,
  WA_IEQS_IO_01-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEQS_IO_01 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_IEQS_IO_01 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_IEQS_IO_01 INTO WA_IEQS_IO_01.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEQS_IO_01-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQS_IO_01-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEQS_IO_01-REF_EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQS_IO_01-REF_EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_BACKUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEQS_IO_01-REF_BACKUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQS_IO_01-REF_BACKUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IEQS_IO_01-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQS_IO_01-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IEQS_IO_01-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEQS_IO_01-SERNR.
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_IEQS_IO_01_STR, 
EQUNR TYPE STRING,
DATAB TYPE STRING,
TIMAB TYPE STRING,
DATBI TYPE STRING,
REF_EQUNR TYPE STRING,
REF_BACKUP TYPE STRING,
EQLFN TYPE STRING,
TYPTX TYPE STRING,
EQTYP TYPE STRING,
EQKTX TYPE STRING,
MATNR TYPE STRING,
SERNR TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEQS_IO_01_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_IEQS_IO_01_STR-EQUNR sy-vline 
WA_IEQS_IO_01_STR-DATAB sy-vline 
WA_IEQS_IO_01_STR-TIMAB sy-vline 
WA_IEQS_IO_01_STR-DATBI sy-vline 
WA_IEQS_IO_01_STR-REF_EQUNR sy-vline 
WA_IEQS_IO_01_STR-REF_BACKUP sy-vline 
WA_IEQS_IO_01_STR-EQLFN sy-vline 
WA_IEQS_IO_01_STR-TYPTX sy-vline 
WA_IEQS_IO_01_STR-EQTYP sy-vline 
WA_IEQS_IO_01_STR-EQKTX sy-vline 
WA_IEQS_IO_01_STR-MATNR sy-vline 
WA_IEQS_IO_01_STR-SERNR sy-vline 
WA_IEQS_IO_01_STR-ERDAT sy-vline 
WA_IEQS_IO_01_STR-ERNAM sy-vline 
WA_IEQS_IO_01_STR-AENAM sy-vline 
WA_IEQS_IO_01_STR-AEDAT sy-vline 
WA_IEQS_IO_01_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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