ABAP Select data from SAP table CMMREQTYPEANA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMREQTYPEANA
*  INTO TABLE @DATA(IT_CMMREQTYPEANA2).
*--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_CMMREQTYPEANA INDEX 1 INTO DATA(WA_CMMREQTYPEANA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMREQTYPEANA>-MANDT = 1.
<CMMREQTYPEANA>-PURCHASEREQUISITION = 1.
<CMMREQTYPEANA>-PURCHASEREQUISITIONITEM = 1.
<CMMREQTYPEANA>-PURCHASINGGROUP = 1.
<CMMREQTYPEANA>-PURCHASINGGROUPNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMREQTYPEANA-PURCHASINGORGANIZATION, sy-vline,
  WA_CMMREQTYPEANA-PURCHASINGORGANIZATIONNAME, sy-vline,
  WA_CMMREQTYPEANA-FIXEDSUPPLIER, sy-vline,
  WA_CMMREQTYPEANA-SUPPLIERNAME, sy-vline,
  WA_CMMREQTYPEANA-MATERIALGROUP, sy-vline,
  WA_CMMREQTYPEANA-MATERIALGROUPNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMREQTYPEANA 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_CMMREQTYPEANA 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_CMMREQTYPEANA INTO WA_CMMREQTYPEANA.


*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 PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMREQTYPEANA-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMREQTYPEANA-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PURGCATRELATEDTOMATERIALGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMREQTYPEANA-PURGCATRELATEDTOMATERIALGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMREQTYPEANA-PURGCATRELATEDTOMATERIALGROUP.
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_CMMREQTYPEANA_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
FIXEDSUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATRELATEDTOMATERIALGROUP TYPE STRING,
PURGCATNAME TYPE STRING,
COMPANYCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARWEEK TYPE STRING,
PURREQNITEMCLASSIFICATION TYPE STRING,
PURREQITEMCLASSIFICATIONTEXT TYPE STRING,
PURCHASEREQUISITIONITEMCOUNT TYPE STRING,
NMBROFFREETXTITMCRTEDFRMSSP TYPE STRING,
NMBROFMATERIALITMCRTEDFRMSSP TYPE STRING,
NMBROFCATALOGITMCRTEDFRMSSP TYPE STRING,
NMBROFMATERIALITMCRTEDMANUALLY TYPE STRING,
NMBROFFREETXTITMCRTEDMANUALLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMREQTYPEANA_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_CMMREQTYPEANA_STR-MANDT sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASEREQUISITION sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASINGGROUP sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASINGGROUPNAME sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_CMMREQTYPEANA_STR-FIXEDSUPPLIER sy-vline 
WA_CMMREQTYPEANA_STR-SUPPLIERNAME sy-vline 
WA_CMMREQTYPEANA_STR-MATERIALGROUP sy-vline 
WA_CMMREQTYPEANA_STR-MATERIALGROUPNAME sy-vline 
WA_CMMREQTYPEANA_STR-MATERIAL sy-vline 
WA_CMMREQTYPEANA_STR-MATERIALNAME sy-vline 
WA_CMMREQTYPEANA_STR-PLANT sy-vline 
WA_CMMREQTYPEANA_STR-PLANTNAME sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASINGCATEGORY sy-vline 
WA_CMMREQTYPEANA_STR-PURGCATRELATEDTOMATERIALGROUP sy-vline 
WA_CMMREQTYPEANA_STR-PURGCATNAME sy-vline 
WA_CMMREQTYPEANA_STR-COMPANYCODE sy-vline 
WA_CMMREQTYPEANA_STR-CREATEDBYUSER sy-vline 
WA_CMMREQTYPEANA_STR-CREATIONDATE sy-vline 
WA_CMMREQTYPEANA_STR-CALENDARYEAR sy-vline 
WA_CMMREQTYPEANA_STR-CALENDARQUARTER sy-vline 
WA_CMMREQTYPEANA_STR-CALENDARMONTH sy-vline 
WA_CMMREQTYPEANA_STR-CALENDARWEEK sy-vline 
WA_CMMREQTYPEANA_STR-PURREQNITEMCLASSIFICATION sy-vline 
WA_CMMREQTYPEANA_STR-PURREQITEMCLASSIFICATIONTEXT sy-vline 
WA_CMMREQTYPEANA_STR-PURCHASEREQUISITIONITEMCOUNT sy-vline 
WA_CMMREQTYPEANA_STR-NMBROFFREETXTITMCRTEDFRMSSP sy-vline 
WA_CMMREQTYPEANA_STR-NMBROFMATERIALITMCRTEDFRMSSP sy-vline 
WA_CMMREQTYPEANA_STR-NMBROFCATALOGITMCRTEDFRMSSP sy-vline 
WA_CMMREQTYPEANA_STR-NMBROFMATERIALITMCRTEDMANUALLY sy-vline 
WA_CMMREQTYPEANA_STR-NMBROFFREETXTITMCRTEDMANUALLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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