ABAP Select data from SAP table PPH_CACHE_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPH_CACHE_ITEM
*  INTO TABLE @DATA(IT_PPH_CACHE_ITEM2).
*--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_PPH_CACHE_ITEM INDEX 1 INTO DATA(WA_PPH_CACHE_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPH_CACHE_ITEM>-MANDT = 1.
<PPH_CACHE_ITEM>-MRPPLANT = 1.
<PPH_CACHE_ITEM>-MATERIAL = 1.
<PPH_CACHE_ITEM>-MRPAREA = 1.
<PPH_CACHE_ITEM>-MRPPLANNINGSEGMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPH_CACHE_ITEM-MRPPLANNINGSEGMENTNUMBER, sy-vline,
  WA_PPH_CACHE_ITEM-MRPELEMENTCATEGORY, sy-vline,
  WA_PPH_CACHE_ITEM-MRPELEMENT, sy-vline,
  WA_PPH_CACHE_ITEM-MRPELEMENTITEM, sy-vline,
  WA_PPH_CACHE_ITEM-MRPELEMENTSCHEDULELINE, sy-vline,
  WA_PPH_CACHE_ITEM-MATERIALSHORTAGEPROFILE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPH_CACHE_ITEM 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_PPH_CACHE_ITEM 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_PPH_CACHE_ITEM INTO WA_PPH_CACHE_ITEM.


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

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

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPH_CACHE_ITEM-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPH_CACHE_ITEM-CUSTOMER.
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_PPH_CACHE_ITEM_STR, 
MANDT TYPE STRING,
MRPPLANT TYPE STRING,
MATERIAL TYPE STRING,
MRPAREA TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
MRPPLANNINGSEGMENTNUMBER TYPE STRING,
MRPELEMENTCATEGORY TYPE STRING,
MRPELEMENT TYPE STRING,
MRPELEMENTITEM TYPE STRING,
MRPELEMENTSCHEDULELINE TYPE STRING,
MATERIALSHORTAGEPROFILE TYPE STRING,
MATERIALSHORTAGEPROF_CNT TYPE STRING,
MRPELEMENTAVAILYORRQMTDATE TYPE STRING,
MRPELEMENTENDDATE TYPE STRING,
MRPELEMENTSTARTDATE TYPE STRING,
MRPELEMENTQUANTITYISFIRM TYPE STRING,
MRPELEMENTOPENQUANTITY TYPE STRING,
MRPELEMENTTYPEIMPORTANCE TYPE STRING,
PRODUCTIONVERSION TYPE STRING,
SUPPLIER TYPE STRING,
CUSTOMER TYPE STRING,
ISSUINGORRECEIVINGPLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
SOURCEMRPELEMENTCATEGORY TYPE STRING,
SOURCEMRPELEMENT TYPE STRING,
SOURCEMRPELEMENTITEM TYPE STRING,
MRPELEMENTUNCOVEREDQUANTITY TYPE STRING,
MRPELEMENTDELAYEDQUANTITY TYPE STRING,
MAXIMUMDELAYDATE TYPE STRING,
MAXIMUMDELAYINDAYS TYPE STRING,
MAXIMUMDELAYINWORKDAYS TYPE STRING,
PROCUREMENTPROGRESSINDICATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPH_CACHE_ITEM_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_PPH_CACHE_ITEM_STR-MANDT sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPPLANT sy-vline 
WA_PPH_CACHE_ITEM_STR-MATERIAL sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPAREA sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPPLANNINGSEGMENTTYPE sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPPLANNINGSEGMENTNUMBER sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTCATEGORY sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENT sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTITEM sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTSCHEDULELINE sy-vline 
WA_PPH_CACHE_ITEM_STR-MATERIALSHORTAGEPROFILE sy-vline 
WA_PPH_CACHE_ITEM_STR-MATERIALSHORTAGEPROF_CNT sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTAVAILYORRQMTDATE sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTENDDATE sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTSTARTDATE sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTQUANTITYISFIRM sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTOPENQUANTITY sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTTYPEIMPORTANCE sy-vline 
WA_PPH_CACHE_ITEM_STR-PRODUCTIONVERSION sy-vline 
WA_PPH_CACHE_ITEM_STR-SUPPLIER sy-vline 
WA_PPH_CACHE_ITEM_STR-CUSTOMER sy-vline 
WA_PPH_CACHE_ITEM_STR-ISSUINGORRECEIVINGPLANT sy-vline 
WA_PPH_CACHE_ITEM_STR-STORAGELOCATION sy-vline 
WA_PPH_CACHE_ITEM_STR-SOURCEMRPELEMENTCATEGORY sy-vline 
WA_PPH_CACHE_ITEM_STR-SOURCEMRPELEMENT sy-vline 
WA_PPH_CACHE_ITEM_STR-SOURCEMRPELEMENTITEM sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTUNCOVEREDQUANTITY sy-vline 
WA_PPH_CACHE_ITEM_STR-MRPELEMENTDELAYEDQUANTITY sy-vline 
WA_PPH_CACHE_ITEM_STR-MAXIMUMDELAYDATE sy-vline 
WA_PPH_CACHE_ITEM_STR-MAXIMUMDELAYINDAYS sy-vline 
WA_PPH_CACHE_ITEM_STR-MAXIMUMDELAYINWORKDAYS sy-vline 
WA_PPH_CACHE_ITEM_STR-PROCUREMENTPROGRESSINDICATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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