ABAP Select data from SAP table ACMTOOL_S_ALVGRID_ROLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACMTOOL_S_ALVGRID_ROLE
*  INTO TABLE @DATA(IT_ACMTOOL_S_ALVGRID_ROLE2).
*--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_ACMTOOL_S_ALVGRID_ROLE INDEX 1 INTO DATA(WA_ACMTOOL_S_ALVGRID_ROLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACMTOOL_S_ALVGRID_ROLE>-ROLE_DCLNAME = 1.
<ACMTOOL_S_ALVGRID_ROLE>-RULEPOS = 1.
<ACMTOOL_S_ALVGRID_ROLE>-SEQUENCEPOS = 1.
<ACMTOOL_S_ALVGRID_ROLE>-LOGEXP_LEVEL = 1.
<ACMTOOL_S_ALVGRID_ROLE>-SEQUENCEPOS_PARENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACMTOOL_S_ALVGRID_ROLE-SEQUENCEPOS_LEVEL, sy-vline,
  WA_ACMTOOL_S_ALVGRID_ROLE-OPTIONAL_ELEMENTS_APPLIED, sy-vline,
  WA_ACMTOOL_S_ALVGRID_ROLE-LOGIC_OPER, sy-vline,
  WA_ACMTOOL_S_ALVGRID_ROLE-ARITY, sy-vline,
  WA_ACMTOOL_S_ALVGRID_ROLE-SHOW_ASPECT_PFCG, sy-vline,
  WA_ACMTOOL_S_ALVGRID_ROLE-COND_CANON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACMTOOL_S_ALVGRID_ROLE 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_ACMTOOL_S_ALVGRID_ROLE 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_ACMTOOL_S_ALVGRID_ROLE INTO WA_ACMTOOL_S_ALVGRID_ROLE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ACMTOOL_S_ALVGRID_ROLE_STR, 
ROLE_DCLNAME TYPE STRING,
RULEPOS TYPE STRING,
SEQUENCEPOS TYPE STRING,
LOGEXP_LEVEL TYPE STRING,
SEQUENCEPOS_PARENT TYPE STRING,
SEQUENCEPOS_LEVEL TYPE STRING,
OPTIONAL_ELEMENTS_APPLIED TYPE STRING,
LOGIC_OPER TYPE STRING,
ARITY TYPE STRING,
SHOW_ASPECT_PFCG TYPE STRING,
COND_CANON TYPE STRING,
COLOR_STATE TYPE STRING,
COLORTAB TYPE STRING,
FUNCTIONAL_GRANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACMTOOL_S_ALVGRID_ROLE_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_ACMTOOL_S_ALVGRID_ROLE_STR-ROLE_DCLNAME sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-RULEPOS sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-SEQUENCEPOS sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-LOGEXP_LEVEL sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-SEQUENCEPOS_PARENT sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-SEQUENCEPOS_LEVEL sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-OPTIONAL_ELEMENTS_APPLIED sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-LOGIC_OPER sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-ARITY sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-SHOW_ASPECT_PFCG sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-COND_CANON sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-COLOR_STATE sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-COLORTAB sy-vline 
WA_ACMTOOL_S_ALVGRID_ROLE_STR-FUNCTIONAL_GRANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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