ABAP Select data from SAP table PPMRSMTLDC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPMRSMTLDC
*  INTO TABLE @DATA(IT_PPMRSMTLDC2).
*--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_PPMRSMTLDC INDEX 1 INTO DATA(WA_PPMRSMTLDC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPMRSMTLDC>-MANDT = 1.
<PPMRSMTLDC>-PMRPSIMULATION = 1.
<PPMRSMTLDC>-PMRPFLEXIBLECONSTRAINT = 1.
<PPMRSMTLDC>-BUCKETINTERNALID = 1.
<PPMRSMTLDC>-TOPLEVELDEMANDINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPMRSMTLDC-PRODUCT, sy-vline,
  WA_PPMRSMTLDC-PLANT, sy-vline,
  WA_PPMRSMTLDC-MRPAREA, sy-vline,
  WA_PPMRSMTLDC-PMRPREFERENCEPLAN, sy-vline,
  WA_PPMRSMTLDC-PMRPSUPPLYGROUP, sy-vline,
  WA_PPMRSMTLDC-PMRPSUPPLYGROUPCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPMRSMTLDC 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_PPMRSMTLDC 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_PPMRSMTLDC INTO WA_PPMRSMTLDC.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PPMRSMTLDC-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPMRSMTLDC-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPMRSMTLDC-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPMRSMTLDC-UNITOFMEASURE.
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_PPMRSMTLDC_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPFLEXIBLECONSTRAINT TYPE STRING,
BUCKETINTERNALID TYPE STRING,
TOPLEVELDEMANDINTERNALID TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
PMRPSUPPLYGROUP TYPE STRING,
PMRPSUPPLYGROUPCATEGORY TYPE STRING,
PMRPBUCKETSTARTDATE TYPE STRING,
PMRPBUCKETENDDATE TYPE STRING,
TOPLEVELPRODUCT TYPE STRING,
TOPLEVELPLANT TYPE STRING,
TOPLEVELMRPAREA TYPE STRING,
TOPLEVELDEMANDUNITOFMEASURE TYPE STRING,
TOPLVLDMNDREQUIREDQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,
PMRPRECEIPTBUCKETQUANTITY TYPE STRING,
PMRPTOPLVLDMNDQUANTITYFACTOR TYPE STRING,
TOPLEVELDEMANDDELTAQUANTITY TYPE STRING,
PMRPTOPLVLDMNDMISSINGQUANTITY TYPE STRING,
PMRPCONSTRAINTTOLERANCEPERCENT TYPE STRING,
PMRPCONSTRAINTQTYINBASEUNIT TYPE STRING,
PMRPCONSTRAINTISDISREGARDED TYPE STRING,
PMRPCONSTRAINTTYPE TYPE STRING,
PMRPCONSTRAINTCATEGORY TYPE STRING,
PMRPCONSTRAINTDELTAQUANTITY TYPE STRING,
PMRPCONSTRAINTMISSINGQUANTITY TYPE STRING,
PMRPCONSTRAINTISVIOLATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPMRSMTLDC_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_PPMRSMTLDC_STR-MANDT sy-vline 
WA_PPMRSMTLDC_STR-PMRPSIMULATION sy-vline 
WA_PPMRSMTLDC_STR-PMRPFLEXIBLECONSTRAINT sy-vline 
WA_PPMRSMTLDC_STR-BUCKETINTERNALID sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELDEMANDINTERNALID sy-vline 
WA_PPMRSMTLDC_STR-PRODUCT sy-vline 
WA_PPMRSMTLDC_STR-PLANT sy-vline 
WA_PPMRSMTLDC_STR-MRPAREA sy-vline 
WA_PPMRSMTLDC_STR-PMRPREFERENCEPLAN sy-vline 
WA_PPMRSMTLDC_STR-PMRPSUPPLYGROUP sy-vline 
WA_PPMRSMTLDC_STR-PMRPSUPPLYGROUPCATEGORY sy-vline 
WA_PPMRSMTLDC_STR-PMRPBUCKETSTARTDATE sy-vline 
WA_PPMRSMTLDC_STR-PMRPBUCKETENDDATE sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELPRODUCT sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELPLANT sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELMRPAREA sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELDEMANDUNITOFMEASURE sy-vline 
WA_PPMRSMTLDC_STR-TOPLVLDMNDREQUIREDQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-UNITOFMEASURE sy-vline 
WA_PPMRSMTLDC_STR-PMRPRECEIPTBUCKETQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-PMRPTOPLVLDMNDQUANTITYFACTOR sy-vline 
WA_PPMRSMTLDC_STR-TOPLEVELDEMANDDELTAQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-PMRPTOPLVLDMNDMISSINGQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTTOLERANCEPERCENT sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTQTYINBASEUNIT sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTISDISREGARDED sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTTYPE sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTCATEGORY sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTDELTAQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTMISSINGQUANTITY sy-vline 
WA_PPMRSMTLDC_STR-PMRPCONSTRAINTISVIOLATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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