ABAP Select data from SAP table IGMACLINEITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IGMACLINEITM
*  INTO TABLE @DATA(IT_IGMACLINEITM2).
*--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_IGMACLINEITM INDEX 1 INTO DATA(WA_IGMACLINEITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IGMACLINEITM>-MANDT = 1.
<IGMACLINEITM>-GRANTEEMGMTLONGSEQUENCENUMBER = 1.
<IGMACLINEITM>-GRANTID = 1.
<IGMACLINEITM>-LEDGER = 1.
<IGMACLINEITM>-GRANTEEMGMTBILLINGRULE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IGMACLINEITM-GRANTFISCALYEAR, sy-vline,
  WA_IGMACLINEITM-GRANTFISCALYEARPERIOD, sy-vline,
  WA_IGMACLINEITM-GRANTEEMGMTCOSTSHARINGRULE, sy-vline,
  WA_IGMACLINEITM-COMPANYCODE, sy-vline,
  WA_IGMACLINEITM-GRANTCURRENCY, sy-vline,
  WA_IGMACLINEITM-AMOUNTINGRANTCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IGMACLINEITM 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_IGMACLINEITM 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_IGMACLINEITM INTO WA_IGMACLINEITM.


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

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

*Conversion exit GJAHR, internal->external for field GRANTFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IGMACLINEITM-GRANTFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGMACLINEITM-GRANTFISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GRANTEEFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IGMACLINEITM-GRANTEEFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGMACLINEITM-GRANTEEFISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IGMACLINEITM-REFERENCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGMACLINEITM-REFERENCEDOCUMENT.
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_IGMACLINEITM_STR, 
MANDT TYPE STRING,
GRANTEEMGMTLONGSEQUENCENUMBER TYPE STRING,
GRANTID TYPE STRING,
LEDGER TYPE STRING,
GRANTEEMGMTBILLINGRULE TYPE STRING,
GRANTFISCALYEAR TYPE STRING,
GRANTFISCALYEARPERIOD TYPE STRING,
GRANTEEMGMTCOSTSHARINGRULE TYPE STRING,
COMPANYCODE TYPE STRING,
GRANTCURRENCY TYPE STRING,
AMOUNTINGRANTCURRENCY TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
FINANCIALMANAGEMENTAREA TYPE STRING,
GRANTEEMGMTVALUETYPECATEGORY TYPE STRING,
GTEEMBDGTVALIDITYNUMBERSTRTDTE TYPE STRING,
GTEEMBDGTVALIDITYNUMBERENDDATE TYPE STRING,
GRANTTYPE TYPE STRING,
SPONSOREDCLASSTYPE TYPE STRING,
SPONSOREDCLASSISBILLABLE TYPE STRING,
GRANTLIFECYCLESTATUS TYPE STRING,
SPONSOREDPROGRAM TYPE STRING,
SPONSOREDCLASS TYPE STRING,
GTEEMBUDGETVALIDITYNUMBER TYPE STRING,
FUND TYPE STRING,
GRANTEEMGMTVALUETYPE TYPE STRING,
BUSINESSTRANSACTIONTYPE TYPE STRING,
ISSTATISTICALITEM TYPE STRING,
GRANTEEFISCALYEAR TYPE STRING,
GRANTEEMGMTBILLINGSTATUS TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFERENCEDOCUMENTITEM TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IGMACLINEITM_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_IGMACLINEITM_STR-MANDT sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTLONGSEQUENCENUMBER sy-vline 
WA_IGMACLINEITM_STR-GRANTID sy-vline 
WA_IGMACLINEITM_STR-LEDGER sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTBILLINGRULE sy-vline 
WA_IGMACLINEITM_STR-GRANTFISCALYEAR sy-vline 
WA_IGMACLINEITM_STR-GRANTFISCALYEARPERIOD sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTCOSTSHARINGRULE sy-vline 
WA_IGMACLINEITM_STR-COMPANYCODE sy-vline 
WA_IGMACLINEITM_STR-GRANTCURRENCY sy-vline 
WA_IGMACLINEITM_STR-AMOUNTINGRANTCURRENCY sy-vline 
WA_IGMACLINEITM_STR-COMPANYCODECURRENCY sy-vline 
WA_IGMACLINEITM_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_IGMACLINEITM_STR-FINANCIALMANAGEMENTAREA sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTVALUETYPECATEGORY sy-vline 
WA_IGMACLINEITM_STR-GTEEMBDGTVALIDITYNUMBERSTRTDTE sy-vline 
WA_IGMACLINEITM_STR-GTEEMBDGTVALIDITYNUMBERENDDATE sy-vline 
WA_IGMACLINEITM_STR-GRANTTYPE sy-vline 
WA_IGMACLINEITM_STR-SPONSOREDCLASSTYPE sy-vline 
WA_IGMACLINEITM_STR-SPONSOREDCLASSISBILLABLE sy-vline 
WA_IGMACLINEITM_STR-GRANTLIFECYCLESTATUS sy-vline 
WA_IGMACLINEITM_STR-SPONSOREDPROGRAM sy-vline 
WA_IGMACLINEITM_STR-SPONSOREDCLASS sy-vline 
WA_IGMACLINEITM_STR-GTEEMBUDGETVALIDITYNUMBER sy-vline 
WA_IGMACLINEITM_STR-FUND sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTVALUETYPE sy-vline 
WA_IGMACLINEITM_STR-BUSINESSTRANSACTIONTYPE sy-vline 
WA_IGMACLINEITM_STR-ISSTATISTICALITEM sy-vline 
WA_IGMACLINEITM_STR-GRANTEEFISCALYEAR sy-vline 
WA_IGMACLINEITM_STR-GRANTEEMGMTBILLINGSTATUS sy-vline 
WA_IGMACLINEITM_STR-REFERENCEDOCUMENT sy-vline 
WA_IGMACLINEITM_STR-REFERENCEDOCUMENTITEM sy-vline 
WA_IGMACLINEITM_STR-REFERENCEDOCUMENTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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