ABAP Select data from SAP table E2GLTTF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2GLTTF 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 E2GLTTF. 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 E2GLTTF 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_E2GLTTF TYPE STANDARD TABLE OF E2GLTTF,
      WA_E2GLTTF TYPE E2GLTTF,
      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: <E2GLTTF> TYPE E2GLTTF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2GLTTF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2GLTTF
  INTO TABLE IT_E2GLTTF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2GLTTF
*  INTO TABLE @DATA(IT_E2GLTTF2).
*--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_E2GLTTF INDEX 1 INTO DATA(WA_E2GLTTF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2GLTTF ASSIGNING <E2GLTTF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2GLTTF>-TAB = 1.
<E2GLTTF>-RLDNR = 1.
<E2GLTTF>-RRCTY = 1.
<E2GLTTF>-RVERS = 1.
<E2GLTTF>-RYEAR = 1.

ENDLOOP.

LOOP AT IT_E2GLTTF INTO WA_E2GLTTF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2GLTTF-RTCUR, sy-vline,
  WA_E2GLTTF-RUNIT, sy-vline,
  WA_E2GLTTF-DRCRK, sy-vline,
  WA_E2GLTTF-OCLNT, sy-vline,
  WA_E2GLTTF-RPMAX, sy-vline,
  WA_E2GLTTF-AUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2GLTTF 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_E2GLTTF 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_E2GLTTF INTO WA_E2GLTTF.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-SACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-SACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2GLTTF-SCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2GLTTF-SCNTR.
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_E2GLTTF_STR, 
TAB TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
OCLNT TYPE STRING,
RPMAX TYPE STRING,
AUNIT TYPE STRING,
CSPRED TYPE STRING,
QSPRED TYPE STRING,
RCOMP TYPE STRING,
SCOMP TYPE STRING,
BUKRS TYPE STRING,
SBUKRS TYPE STRING,
ROBUKRS TYPE STRING,
SOBUKRS TYPE STRING,
KOKRS TYPE STRING,
SKOKRS TYPE STRING,
RBUSA TYPE STRING,
SBUSA TYPE STRING,
RACCT TYPE STRING,
SACCT TYPE STRING,
RCNTR TYPE STRING,
SCNTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2GLTTF_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_E2GLTTF_STR-TAB sy-vline 
WA_E2GLTTF_STR-RLDNR sy-vline 
WA_E2GLTTF_STR-RRCTY sy-vline 
WA_E2GLTTF_STR-RVERS sy-vline 
WA_E2GLTTF_STR-RYEAR sy-vline 
WA_E2GLTTF_STR-RTCUR sy-vline 
WA_E2GLTTF_STR-RUNIT sy-vline 
WA_E2GLTTF_STR-DRCRK sy-vline 
WA_E2GLTTF_STR-OCLNT sy-vline 
WA_E2GLTTF_STR-RPMAX sy-vline 
WA_E2GLTTF_STR-AUNIT sy-vline 
WA_E2GLTTF_STR-CSPRED sy-vline 
WA_E2GLTTF_STR-QSPRED sy-vline 
WA_E2GLTTF_STR-RCOMP sy-vline 
WA_E2GLTTF_STR-SCOMP sy-vline 
WA_E2GLTTF_STR-BUKRS sy-vline 
WA_E2GLTTF_STR-SBUKRS sy-vline 
WA_E2GLTTF_STR-ROBUKRS sy-vline 
WA_E2GLTTF_STR-SOBUKRS sy-vline 
WA_E2GLTTF_STR-KOKRS sy-vline 
WA_E2GLTTF_STR-SKOKRS sy-vline 
WA_E2GLTTF_STR-RBUSA sy-vline 
WA_E2GLTTF_STR-SBUSA sy-vline 
WA_E2GLTTF_STR-RACCT sy-vline 
WA_E2GLTTF_STR-SACCT sy-vline 
WA_E2GLTTF_STR-RCNTR sy-vline 
WA_E2GLTTF_STR-SCNTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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