ABAP Select data from SAP table /SAPAPO/DM_FIXPEG_IO_CACHE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/DM_FIXPEG_IO_CACHE 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 /SAPAPO/DM_FIXPEG_IO_CACHE. 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 /SAPAPO/DM_FIXPEG_IO_CACHE 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_/SAPAPO/DM_FIXPEG_IO_CACHE TYPE STANDARD TABLE OF /SAPAPO/DM_FIXPEG_IO_CACHE,
      WA_/SAPAPO/DM_FIXPEG_IO_CACHE TYPE /SAPAPO/DM_FIXPEG_IO_CACHE,
      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: </SAPAPO/DM_FIXPEG_IO_CACHE> TYPE /SAPAPO/DM_FIXPEG_IO_CACHE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/DM_FIXPEG_IO_CACHE
  INTO TABLE IT_/SAPAPO/DM_FIXPEG_IO_CACHE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/DM_FIXPEG_IO_CACHE
*  INTO TABLE @DATA(IT_/SAPAPO/DM_FIXPEG_IO_CACHE2).
*--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_/SAPAPO/DM_FIXPEG_IO_CACHE INDEX 1 INTO DATA(WA_/SAPAPO/DM_FIXPEG_IO_CACHE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/DM_FIXPEG_IO_CACHE ASSIGNING </SAPAPO/DM_FIXPEG_IO_CACHE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/DM_FIXPEG_IO_CACHE>-CONTEXT = 1.
</SAPAPO/DM_FIXPEG_IO_CACHE>-APOAPPL = 1.
</SAPAPO/DM_FIXPEG_IO_CACHE>-METHOD = 1.
</SAPAPO/DM_FIXPEG_IO_CACHE>-OBJECTTYPE = 1.
</SAPAPO/DM_FIXPEG_IO_CACHE>-DELNR = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/DM_FIXPEG_IO_CACHE INTO WA_/SAPAPO/DM_FIXPEG_IO_CACHE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/DM_FIXPEG_IO_CACHE-DELPS, sy-vline,
  WA_/SAPAPO/DM_FIXPEG_IO_CACHE-DELET, sy-vline,
  WA_/SAPAPO/DM_FIXPEG_IO_CACHE-ORDERGUID_REF, sy-vline,
  WA_/SAPAPO/DM_FIXPEG_IO_CACHE-OBJECTTYPE_REF, sy-vline,
  WA_/SAPAPO/DM_FIXPEG_IO_CACHE-DELNR_REF, sy-vline,
  WA_/SAPAPO/DM_FIXPEG_IO_CACHE-DELPS_REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/DM_FIXPEG_IO_CACHE 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_/SAPAPO/DM_FIXPEG_IO_CACHE 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_/SAPAPO/DM_FIXPEG_IO_CACHE INTO WA_/SAPAPO/DM_FIXPEG_IO_CACHE.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DM_FIXPEG_IO_CACHE-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DM_FIXPEG_IO_CACHE-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DM_FIXPEG_IO_CACHE-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DM_FIXPEG_IO_CACHE-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field IO_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DM_FIXPEG_IO_CACHE-IO_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DM_FIXPEG_IO_CACHE-IO_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field IO_END_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DM_FIXPEG_IO_CACHE-IO_END_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DM_FIXPEG_IO_CACHE-IO_END_TIME.
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_/SAPAPO/DM_FIXPEG_IO_CACHE_STR, 
CONTEXT TYPE STRING,
APOAPPL TYPE STRING,
METHOD TYPE STRING,
OBJECTTYPE TYPE STRING,
DELNR TYPE STRING,
DELPS TYPE STRING,
DELET TYPE STRING,
ORDERGUID_REF TYPE STRING,
OBJECTTYPE_REF TYPE STRING,
DELNR_REF TYPE STRING,
DELPS_REF TYPE STRING,
DELET_REF TYPE STRING,
SUBLOC_REF TYPE STRING,
BATCH_REF TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
INSMK TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
AUFNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
KZBEW TYPE STRING,
SHKZG TYPE STRING,
ZEILE TYPE STRING,
LINE_ID TYPE STRING,
PARENT_ID TYPE STRING,
LINE_DEPTH TYPE STRING,
ACTID TYPE STRING,
PEGID TYPE STRING,
SUBLOC TYPE STRING,
VERSION TYPE STRING,
CATEGORY TYPE STRING,
CATEGORY_TYPE TYPE STRING,
CHARID TYPE STRING,
POSITION_NO TYPE STRING,
LINE_NO TYPE STRING,
IS_INPUT_NODE TYPE STRING,
PARENT_POS TYPE STRING,
QUANTITY TYPE STRING,
REAL_QUANTITY TYPE STRING,
ORIGINAL_QUANTITY TYPE STRING,
CONF_QUANTITY TYPE STRING,
IS_MASTER TYPE STRING,
IGNORE_PEGGING TYPE STRING,
PENALTY_GROUP TYPE STRING,
EXT_FIXED TYPE STRING,
BOMID TYPE STRING,
BOMID_TYPE TYPE STRING,
INC_FLAG TYPE STRING,
ADVCODE TYPE STRING,
PRIO_REQ TYPE STRING,
CUOBJ TYPE STRING,
CONTI_SCHEDULING TYPE STRING,
OFFSET_VALUE TYPE STRING,
UNPLAN_OFFSET_VALUE TYPE STRING,
HAS_UNPLAN_OFFSET TYPE STRING,
OFFSET_RELATION TYPE STRING,
OFFSET_IN_PERCENT TYPE STRING,
SCHEDULE_OFFSET TYPE STRING,
HAS_CHARACTS TYPE STRING,
SHLF_MIN TYPE STRING,
SHLF_MAX TYPE STRING,
USE_SHLF TYPE STRING,
ATP_MERGE_FLAG TYPE STRING,
IONODE_TYPE TYPE STRING,
ORDERID TYPE STRING,
IO_TIME TYPE STRING,
IO_END_TIME TYPE STRING,
NETCHG_FLAG TYPE STRING,
CHANGE_FLAG TYPE STRING,
HAS_DESC_CHARACTS TYPE STRING,
ATPCMPSTAT TYPE STRING,
RESERVED_INT4_1 TYPE STRING,
RESERVED_INT4_2 TYPE STRING,
RESERVED_BOOL_1 TYPE STRING,
RESERVED_BOOL_2 TYPE STRING,
AFS_CAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/DM_FIXPEG_IO_CACHE_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_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CONTEXT sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-APOAPPL sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-METHOD sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-OBJECTTYPE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELNR sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELPS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELET sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ORDERGUID_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-OBJECTTYPE_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELNR_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELPS_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-DELET_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SUBLOC_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-BATCH_REF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-MATNR sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-WERKS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-LGORT sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CHARG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-INSMK sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-LIFNR sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-KUNNR sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-KDAUF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-KDPOS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-KDEIN sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-EBELN sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-EBELP sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-AUFNR sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RSNUM sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RSPOS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-MENGE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-MEINS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-KZBEW sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SHKZG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ZEILE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-LINE_ID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-PARENT_ID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-LINE_DEPTH sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ACTID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-PEGID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SUBLOC sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-VERSION sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CATEGORY sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CATEGORY_TYPE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CHARID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-POSITION_NO sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-LINE_NO sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IS_INPUT_NODE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-PARENT_POS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-QUANTITY sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-REAL_QUANTITY sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ORIGINAL_QUANTITY sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CONF_QUANTITY sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IS_MASTER sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IGNORE_PEGGING sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-PENALTY_GROUP sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-EXT_FIXED sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-BOMID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-BOMID_TYPE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-INC_FLAG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ADVCODE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-PRIO_REQ sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CUOBJ sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CONTI_SCHEDULING sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-OFFSET_VALUE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-UNPLAN_OFFSET_VALUE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-HAS_UNPLAN_OFFSET sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-OFFSET_RELATION sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-OFFSET_IN_PERCENT sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SCHEDULE_OFFSET sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-HAS_CHARACTS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SHLF_MIN sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-SHLF_MAX sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-USE_SHLF sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ATP_MERGE_FLAG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IONODE_TYPE sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ORDERID sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IO_TIME sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-IO_END_TIME sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-NETCHG_FLAG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-CHANGE_FLAG sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-HAS_DESC_CHARACTS sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-ATPCMPSTAT sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RESERVED_INT4_1 sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RESERVED_INT4_2 sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RESERVED_BOOL_1 sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-RESERVED_BOOL_2 sy-vline 
WA_/SAPAPO/DM_FIXPEG_IO_CACHE_STR-AFS_CAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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