ABAP Select data from SAP table GLACCT_Q2P_MIG_B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GLACCT_Q2P_MIG_B 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 GLACCT_Q2P_MIG_B. 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 GLACCT_Q2P_MIG_B 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_GLACCT_Q2P_MIG_B TYPE STANDARD TABLE OF GLACCT_Q2P_MIG_B,
      WA_GLACCT_Q2P_MIG_B TYPE GLACCT_Q2P_MIG_B,
      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: <GLACCT_Q2P_MIG_B> TYPE GLACCT_Q2P_MIG_B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GLACCT_Q2P_MIG_B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GLACCT_Q2P_MIG_B
  INTO TABLE IT_GLACCT_Q2P_MIG_B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GLACCT_Q2P_MIG_B
*  INTO TABLE @DATA(IT_GLACCT_Q2P_MIG_B2).
*--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_GLACCT_Q2P_MIG_B INDEX 1 INTO DATA(WA_GLACCT_Q2P_MIG_B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GLACCT_Q2P_MIG_B ASSIGNING <GLACCT_Q2P_MIG_B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GLACCT_Q2P_MIG_B>-MANDT = 1.
<GLACCT_Q2P_MIG_B>-BUKRS = 1.
<GLACCT_Q2P_MIG_B>-SAKNR = 1.
<GLACCT_Q2P_MIG_B>-WAERS = 1.
<GLACCT_Q2P_MIG_B>-XSALH = 1.

ENDLOOP.

LOOP AT IT_GLACCT_Q2P_MIG_B INTO WA_GLACCT_Q2P_MIG_B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GLACCT_Q2P_MIG_B-KDFSL, sy-vline,
  WA_GLACCT_Q2P_MIG_B-BEWGP, sy-vline,
  WA_GLACCT_Q2P_MIG_B-MWSKZ, sy-vline,
  WA_GLACCT_Q2P_MIG_B-XMWNO, sy-vline,
  WA_GLACCT_Q2P_MIG_B-MITKZ, sy-vline,
  WA_GLACCT_Q2P_MIG_B-ALTKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GLACCT_Q2P_MIG_B 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_GLACCT_Q2P_MIG_B 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_GLACCT_Q2P_MIG_B INTO WA_GLACCT_Q2P_MIG_B.


*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 SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLACCT_Q2P_MIG_B-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLACCT_Q2P_MIG_B-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALTKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLACCT_Q2P_MIG_B-ALTKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLACCT_Q2P_MIG_B-ALTKT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_GLACCT_Q2P_MIG_B-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLACCT_Q2P_MIG_B-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLACCT_Q2P_MIG_B-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLACCT_Q2P_MIG_B-RECID.
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_GLACCT_Q2P_MIG_B_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SAKNR TYPE STRING,
WAERS TYPE STRING,
XSALH TYPE STRING,
KDFSL TYPE STRING,
BEWGP TYPE STRING,
MWSKZ TYPE STRING,
XMWNO TYPE STRING,
MITKZ TYPE STRING,
ALTKT TYPE STRING,
WMETH TYPE STRING,
INFKY TYPE STRING,
TOGRU TYPE STRING,
XOPVW TYPE STRING,
XKRES TYPE STRING,
ZUAWA TYPE STRING,
BEGRU TYPE STRING,
BUSAB TYPE STRING,
FSTAG TYPE STRING,
XINTB TYPE STRING,
XNKON TYPE STRING,
XMITK TYPE STRING,
FDLEV TYPE STRING,
XGKON TYPE STRING,
FIPOS TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
VZSKZ TYPE STRING,
ZINDT TYPE STRING,
ZINRT TYPE STRING,
DATLZ TYPE STRING,
RECID TYPE STRING,
XSPEB TYPE STRING,
XLOEB TYPE STRING,
XLGCLR TYPE STRING,
X_UJ_CLR TYPE STRING,
MCAKEY TYPE STRING,
TYPE_OF_DIFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GLACCT_Q2P_MIG_B_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_GLACCT_Q2P_MIG_B_STR-MANDT sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-BUKRS sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-SAKNR sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-WAERS sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XSALH sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-KDFSL sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-BEWGP sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-MWSKZ sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XMWNO sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-MITKZ sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-ALTKT sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-WMETH sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-INFKY sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-TOGRU sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XOPVW sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XKRES sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-ZUAWA sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-BEGRU sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-BUSAB sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-FSTAG sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XINTB sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XNKON sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XMITK sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-FDLEV sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XGKON sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-FIPOS sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-HBKID sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-HKTID sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-VZSKZ sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-ZINDT sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-ZINRT sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-DATLZ sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-RECID sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XSPEB sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XLOEB sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-XLGCLR sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-X_UJ_CLR sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-MCAKEY sy-vline 
WA_GLACCT_Q2P_MIG_B_STR-TYPE_OF_DIFF sy-vline      INTO ld_text SEPARATED BY SPACE.

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