ABAP Select data from SAP table V_MRP_PRODDEM_A into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_MRP_PRODDEM_A
*  INTO TABLE @DATA(IT_V_MRP_PRODDEM_A2).
*--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_V_MRP_PRODDEM_A INDEX 1 INTO DATA(WA_V_MRP_PRODDEM_A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_MRP_PRODDEM_A ASSIGNING <V_MRP_PRODDEM_A>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_MRP_PRODDEM_A>-MANDT = 1.
<V_MRP_PRODDEM_A>-MRPPLANNINGSEGMENTTYPE = 1.
<V_MRP_PRODDEM_A>-MRPPLANNINGSEGMENTNUMBER = 1.
<V_MRP_PRODDEM_A>-MATERIALSHORTAGEPROFILE = 1.
<V_MRP_PRODDEM_A>-MATERIALSHORTAGEPROF_CNT = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_MRP_PRODDEM_A-MRPELEMENTCATEGORY, sy-vline,
WA_V_MRP_PRODDEM_A-MRPELEMENT, sy-vline,
WA_V_MRP_PRODDEM_A-SOURCEMRPELEMENTCATEGORY, sy-vline,
WA_V_MRP_PRODDEM_A-SOURCEMRPELEMENT, sy-vline,
WA_V_MRP_PRODDEM_A-MAXIMUMDELAYINDAYS, sy-vline,
WA_V_MRP_PRODDEM_A-MAXIMUMDELAYINWORKDAYS, sy-vline.
ENDLOOP. *Add any further fields from structure WA_V_MRP_PRODDEM_A 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_V_MRP_PRODDEM_A 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_V_MRP_PRODDEM_A INTO WA_V_MRP_PRODDEM_A. *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_V_MRP_PRODDEM_A_STR,
MANDT TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
MRPPLANNINGSEGMENTNUMBER TYPE STRING,
MATERIALSHORTAGEPROFILE TYPE STRING,
MATERIALSHORTAGEPROF_CNT TYPE STRING,
MRPELEMENTCATEGORY TYPE STRING,
MRPELEMENT TYPE STRING,
SOURCEMRPELEMENTCATEGORY TYPE STRING,
SOURCEMRPELEMENT TYPE STRING,
MAXIMUMDELAYINDAYS TYPE STRING,
MAXIMUMDELAYINWORKDAYS TYPE STRING,
MAXIMUMDELAYEDQUANTITY TYPE STRING,
MAXIMUMUNCOVEREDQUANTITY TYPE STRING,
NUMBEROFUNCOVEREDDEMANDITEMS TYPE STRING,END OF T_EKKO_STR. DATA: WA_V_MRP_PRODDEM_A_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_V_MRP_PRODDEM_A_STR-MANDT sy-vline
WA_V_MRP_PRODDEM_A_STR-MRPPLANNINGSEGMENTTYPE sy-vline
WA_V_MRP_PRODDEM_A_STR-MRPPLANNINGSEGMENTNUMBER sy-vline
WA_V_MRP_PRODDEM_A_STR-MATERIALSHORTAGEPROFILE sy-vline
WA_V_MRP_PRODDEM_A_STR-MATERIALSHORTAGEPROF_CNT sy-vline
WA_V_MRP_PRODDEM_A_STR-MRPELEMENTCATEGORY sy-vline
WA_V_MRP_PRODDEM_A_STR-MRPELEMENT sy-vline
WA_V_MRP_PRODDEM_A_STR-SOURCEMRPELEMENTCATEGORY sy-vline
WA_V_MRP_PRODDEM_A_STR-SOURCEMRPELEMENT sy-vline
WA_V_MRP_PRODDEM_A_STR-MAXIMUMDELAYINDAYS sy-vline
WA_V_MRP_PRODDEM_A_STR-MAXIMUMDELAYINWORKDAYS sy-vline
WA_V_MRP_PRODDEM_A_STR-MAXIMUMDELAYEDQUANTITY sy-vline
WA_V_MRP_PRODDEM_A_STR-MAXIMUMUNCOVEREDQUANTITY sy-vline
WA_V_MRP_PRODDEM_A_STR-NUMBEROFUNCOVEREDDEMANDITEMS sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.