ABAP Select data from SAP table CRMT_BUS_MERGE_CENTRAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_BUS_MERGE_CENTRAL
*  INTO TABLE @DATA(IT_CRMT_BUS_MERGE_CENTRAL2).
*--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_CRMT_BUS_MERGE_CENTRAL INDEX 1 INTO DATA(WA_CRMT_BUS_MERGE_CENTRAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_BUS_MERGE_CENTRAL>-SEARCHTERM1 = 1.
<CRMT_BUS_MERGE_CENTRAL>-SEARCHTERM2 = 1.
<CRMT_BUS_MERGE_CENTRAL>-PARTNERTYPE = 1.
<CRMT_BUS_MERGE_CENTRAL>-AUTHORIZATIONGROUP = 1.
<CRMT_BUS_MERGE_CENTRAL>-PARTNERLANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_BUS_MERGE_CENTRAL-PARTNERLANGUAGEISO, sy-vline,
  WA_CRMT_BUS_MERGE_CENTRAL-DATAORIGINTYPE, sy-vline,
  WA_CRMT_BUS_MERGE_CENTRAL-CENTRALARCHIVINGFLAG, sy-vline,
  WA_CRMT_BUS_MERGE_CENTRAL-CENTRALBLOCK, sy-vline,
  WA_CRMT_BUS_MERGE_CENTRAL-TITLE_KEY, sy-vline,
  WA_CRMT_BUS_MERGE_CENTRAL-CONTACTALLOWANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_BUS_MERGE_CENTRAL 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_CRMT_BUS_MERGE_CENTRAL 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_CRMT_BUS_MERGE_CENTRAL INTO WA_CRMT_BUS_MERGE_CENTRAL.


*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 ISOLA, internal->external for field PARTNERLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_BUS_MERGE_CENTRAL-PARTNERLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_BUS_MERGE_CENTRAL-PARTNERLANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field CORRESPONDLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_BUS_MERGE_CENTRAL-CORRESPONDLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_BUS_MERGE_CENTRAL-CORRESPONDLANGUAGE.
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_CRMT_BUS_MERGE_CENTRAL_STR, 
SEARCHTERM1 TYPE STRING,
SEARCHTERM2 TYPE STRING,
PARTNERTYPE TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
PARTNERLANGUAGE TYPE STRING,
PARTNERLANGUAGEISO TYPE STRING,
DATAORIGINTYPE TYPE STRING,
CENTRALARCHIVINGFLAG TYPE STRING,
CENTRALBLOCK TYPE STRING,
TITLE_KEY TYPE STRING,
CONTACTALLOWANCE TYPE STRING,
PARTNEREXTERNAL TYPE STRING,
TITLELETTER TYPE STRING,
NOTRELEASED TYPE STRING,
COMM_TYPE TYPE STRING,
PRINT_MODE TYPE STRING,
IS_COMPETITOR TYPE STRING,
IS_PROSPECT TYPE STRING,
IS_CONSUMER TYPE STRING,
IS_CUSTOMER TYPE STRING,
IS_COD_CUSTOMER TYPE STRING,
INDUSTRY TYPE STRING,
IS_RENTED TYPE STRING,
ACCOUNT_GROUP TYPE STRING,
NIELSEN_ID TYPE STRING,
CLASSIFIC TYPE STRING,
ATTRIBUTE TYPE STRING,
ATTRIB_2 TYPE STRING,
ATTRIB_3 TYPE STRING,
ATTRIB_4 TYPE STRING,
ATTRIB_5 TYPE STRING,
ATTRIB_6 TYPE STRING,
ATTRIB_7 TYPE STRING,
ATTRIB_8 TYPE STRING,
ATTRIB_9 TYPE STRING,
ATTRIB_10 TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
LEGALFORM TYPE STRING,
INDUSTRYSECTOR TYPE STRING,
FOUNDATIONDATE TYPE STRING,
LIQUIDATIONDATE TYPE STRING,
LOC_NO_1 TYPE STRING,
LOC_NO_2 TYPE STRING,
CHK_DIGIT TYPE STRING,
LEGALORG TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
BIRTHNAME TYPE STRING,
MIDDLENAME TYPE STRING,
SECONDNAME TYPE STRING,
TITLE_ACA1 TYPE STRING,
TITLE_ACA2 TYPE STRING,
TITLE_SPPL TYPE STRING,
PREFIX1 TYPE STRING,
PREFIX2 TYPE STRING,
NICKNAME TYPE STRING,
INITIALS TYPE STRING,
NAMEFORMAT TYPE STRING,
NAMCOUNTRY TYPE STRING,
NAMCOUNTRYISO TYPE STRING,
SEX TYPE STRING,
BIRTHPLACE TYPE STRING,
BIRTHDATE TYPE STRING,
DEATHDATE TYPE STRING,
MARITALSTATUS TYPE STRING,
CORRESPONDLANGUAGE TYPE STRING,
CORRESPONDLANGUAGEISO TYPE STRING,
FULLNAME TYPE STRING,
EMPLOYER TYPE STRING,
OCCUPATION TYPE STRING,
NATIONALITY TYPE STRING,
NATIONALITYISO TYPE STRING,
COUNTRYORIGIN TYPE STRING,
BIRTHDT_STATUS TYPE STRING,
GENDER TYPE STRING,
NAMEGROUP1 TYPE STRING,
NAMEGROUP2 TYPE STRING,
GROUPTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_BUS_MERGE_CENTRAL_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_CRMT_BUS_MERGE_CENTRAL_STR-SEARCHTERM1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-SEARCHTERM2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PARTNERTYPE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-AUTHORIZATIONGROUP sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PARTNERLANGUAGE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PARTNERLANGUAGEISO sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-DATAORIGINTYPE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CENTRALARCHIVINGFLAG sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CENTRALBLOCK sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-TITLE_KEY sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CONTACTALLOWANCE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PARTNEREXTERNAL sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-TITLELETTER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NOTRELEASED sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-COMM_TYPE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PRINT_MODE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_COMPETITOR sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_PROSPECT sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_CONSUMER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_CUSTOMER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_COD_CUSTOMER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-INDUSTRY sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-IS_RENTED sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ACCOUNT_GROUP sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NIELSEN_ID sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CLASSIFIC sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIBUTE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_3 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_4 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_5 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_6 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_7 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_8 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_9 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-ATTRIB_10 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAME1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAME2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAME3 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAME4 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LEGALFORM sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-INDUSTRYSECTOR sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-FOUNDATIONDATE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LIQUIDATIONDATE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LOC_NO_1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LOC_NO_2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CHK_DIGIT sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LEGALORG sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-FIRSTNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-LASTNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-BIRTHNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-MIDDLENAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-SECONDNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-TITLE_ACA1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-TITLE_ACA2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-TITLE_SPPL sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PREFIX1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-PREFIX2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NICKNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-INITIALS sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAMEFORMAT sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAMCOUNTRY sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAMCOUNTRYISO sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-SEX sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-BIRTHPLACE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-BIRTHDATE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-DEATHDATE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-MARITALSTATUS sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CORRESPONDLANGUAGE sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-CORRESPONDLANGUAGEISO sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-FULLNAME sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-EMPLOYER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-OCCUPATION sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NATIONALITY sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NATIONALITYISO sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-COUNTRYORIGIN sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-BIRTHDT_STATUS sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-GENDER sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAMEGROUP1 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-NAMEGROUP2 sy-vline 
WA_CRMT_BUS_MERGE_CENTRAL_STR-GROUPTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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