ABAP Select data from SAP table /PLMI/S_ECR_SPEC_ATTR_AH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_ECR_SPEC_ATTR_AH
*  INTO TABLE @DATA(IT_/PLMI/S_ECR_SPEC_ATTR_AH2).
*--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_/PLMI/S_ECR_SPEC_ATTR_AH INDEX 1 INTO DATA(WA_/PLMI/S_ECR_SPEC_ATTR_AH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_ECR_SPEC_ATTR_AH>-INTERNAL_ID = 1.
</PLMI/S_ECR_SPEC_ATTR_AH>-CHANGE_RELEVANT = 1.
</PLMI/S_ECR_SPEC_ATTR_AH>-OBJECT_GROUP = 1.
</PLMI/S_ECR_SPEC_ATTR_AH>-MATERIAL_COST_CHANGE = 1.
</PLMI/S_ECR_SPEC_ATTR_AH>-ENGINEERING_COST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_ECR_SPEC_ATTR_AH-INVESTMENT, sy-vline,
  WA_/PLMI/S_ECR_SPEC_ATTR_AH-OBJECT_STATUS, sy-vline,
  WA_/PLMI/S_ECR_SPEC_ATTR_AH-CURRENCY, sy-vline,
  WA_/PLMI/S_ECR_SPEC_ATTR_AH-OLD_CHANGE_NO, sy-vline,
  WA_/PLMI/S_ECR_SPEC_ATTR_AH-NEW_CHANGE_NO, sy-vline,
  WA_/PLMI/S_ECR_SPEC_ATTR_AH-NEW_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_ECR_SPEC_ATTR_AH 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_/PLMI/S_ECR_SPEC_ATTR_AH 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_/PLMI/S_ECR_SPEC_ATTR_AH INTO WA_/PLMI/S_ECR_SPEC_ATTR_AH.


*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 OLD_CHANGE_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_ECR_SPEC_ATTR_AH-OLD_CHANGE_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_ECR_SPEC_ATTR_AH-OLD_CHANGE_NO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field OLD_QUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_ECR_SPEC_ATTR_AH-OLD_QUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_ECR_SPEC_ATTR_AH-OLD_QUNIT.
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_/PLMI/S_ECR_SPEC_ATTR_AH_STR, 
INTERNAL_ID TYPE STRING,
CHANGE_RELEVANT TYPE STRING,
OBJECT_GROUP TYPE STRING,
MATERIAL_COST_CHANGE TYPE STRING,
ENGINEERING_COST TYPE STRING,
INVESTMENT TYPE STRING,
OBJECT_STATUS TYPE STRING,
CURRENCY TYPE STRING,
OLD_CHANGE_NO TYPE STRING,
NEW_CHANGE_NO TYPE STRING,
NEW_STATUS TYPE STRING,
NEW_COMPONENT TYPE STRING,
OLD_COMPONENT TYPE STRING,
NEW_MAKTX TYPE STRING,
OLD_MAKTX TYPE STRING,
NEW_QUANT TYPE STRING,
NEW_QUNIT TYPE STRING,
OLD_QUANT TYPE STRING,
OLD_QUNIT TYPE STRING,
STATUS_CHG_WARN TYPE STRING,
STATUS_CHG_WARN_TT TYPE STRING,
NEW_AH_GUID TYPE STRING,
NEW_AH_ECN_COUNTER TYPE STRING,
NEW_DISPLAY_KEY TYPE STRING,
LONG_TEXT_EXIST TYPE STRING,
DUMMY1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_ECR_SPEC_ATTR_AH_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_/PLMI/S_ECR_SPEC_ATTR_AH_STR-INTERNAL_ID sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-CHANGE_RELEVANT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OBJECT_GROUP sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-MATERIAL_COST_CHANGE sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-ENGINEERING_COST sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-INVESTMENT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OBJECT_STATUS sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-CURRENCY sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OLD_CHANGE_NO sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_CHANGE_NO sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_STATUS sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_COMPONENT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OLD_COMPONENT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_MAKTX sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OLD_MAKTX sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_QUANT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_QUNIT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OLD_QUANT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-OLD_QUNIT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-STATUS_CHG_WARN sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-STATUS_CHG_WARN_TT sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_AH_GUID sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_AH_ECN_COUNTER sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-NEW_DISPLAY_KEY sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-LONG_TEXT_EXIST sy-vline 
WA_/PLMI/S_ECR_SPEC_ATTR_AH_STR-DUMMY1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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