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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/SDEMAND_PLANNING_ALERT
*  INTO TABLE @DATA(IT_/SAPAPO/SDEMAND_PLANNING_ALERT2).
*--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/SDEMAND_PLANNING_ALERT INDEX 1 INTO DATA(WA_/SAPAPO/SDEMAND_PLANNING_ALERT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/SDEMAND_PLANNING_ALERT>-STEP = 1.
</SAPAPO/SDEMAND_PLANNING_ALERT>-TYPE = 1.
</SAPAPO/SDEMAND_PLANNING_ALERT>-PLLAYOUT = 1.
</SAPAPO/SDEMAND_PLANNING_ALERT>-VRSIO = 1.
</SAPAPO/SDEMAND_PLANNING_ALERT>-KRIT3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/SDEMAND_PLANNING_ALERT-PRPFL, sy-vline,
  WA_/SAPAPO/SDEMAND_PLANNING_ALERT-UNI_GW, sy-vline,
  WA_/SAPAPO/SDEMAND_PLANNING_ALERT-UNI_IST, sy-vline,
  WA_/SAPAPO/SDEMAND_PLANNING_ALERT-UNI_PERCENT, sy-vline,
  WA_/SAPAPO/SDEMAND_PLANNING_ALERT-SELECTIONID, sy-vline,
  WA_/SAPAPO/SDEMAND_PLANNING_ALERT-JOBNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/SDEMAND_PLANNING_ALERT 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/SDEMAND_PLANNING_ALERT 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/SDEMAND_PLANNING_ALERT INTO WA_/SAPAPO/SDEMAND_PLANNING_ALERT.


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

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

*Conversion exit VRSIO, internal->external for field PLVER
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/SDEMAND_PLANNING_ALERT-PLVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/SDEMAND_PLANNING_ALERT-PLVER.
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/SDEMAND_PLANNING_ALERT_STR, 
STEP TYPE STRING,
TYPE TYPE STRING,
PLLAYOUT TYPE STRING,
VRSIO TYPE STRING,
KRIT3 TYPE STRING,
PRPFL TYPE STRING,
UNI_GW TYPE STRING,
UNI_IST TYPE STRING,
UNI_PERCENT TYPE STRING,
SELECTIONID TYPE STRING,
JOBNR TYPE STRING,
JOBCNT TYPE STRING,
JOBDATE TYPE STRING,
JOBTIME TYPE STRING,
PLANVIEW TYPE STRING,
MAKRO TYPE STRING,
AID TYPE STRING,
AT_ID TYPE STRING,
AOT TYPE STRING,
STATUS TYPE STRING,
VFROM TYPE STRING,
VTO TYPE STRING,
PRIORITY TYPE STRING,
PLVER TYPE STRING,
FACTION TYPE STRING,
ARBGB TYPE STRING,
MSGNR TYPE STRING,
PARAM1 TYPE STRING,
PARAM2 TYPE STRING,
PARAM3 TYPE STRING,
PARAM4 TYPE STRING,
MVIEW TYPE STRING,
DVIEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/SDEMAND_PLANNING_ALERT_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/SDEMAND_PLANNING_ALERT_STR-STEP sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-TYPE sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PLLAYOUT sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-VRSIO sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-KRIT3 sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PRPFL sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-UNI_GW sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-UNI_IST sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-UNI_PERCENT sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-SELECTIONID sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-JOBNR sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-JOBCNT sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-JOBDATE sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-JOBTIME sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PLANVIEW sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-MAKRO sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-AID sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-AT_ID sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-AOT sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-STATUS sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-VFROM sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-VTO sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PRIORITY sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PLVER sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-FACTION sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-ARBGB sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-MSGNR sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PARAM1 sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PARAM2 sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PARAM3 sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-PARAM4 sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-MVIEW sy-vline 
WA_/SAPAPO/SDEMAND_PLANNING_ALERT_STR-DVIEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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