ABAP Select data from SAP table POC_SETTINGS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POC_SETTINGS
*  INTO TABLE @DATA(IT_POC_SETTINGS2).
*--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_POC_SETTINGS INDEX 1 INTO DATA(WA_POC_SETTINGS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POC_SETTINGS>-RUN_MODE = 1.
<POC_SETTINGS>-SIGNATURE_TYPE = 1.
<POC_SETTINGS>-SIGNSTRAT_DEV = 1.
<POC_SETTINGS>-SIGNSTRAT_STEP = 1.
<POC_SETTINGS>-COMMAND_TAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POC_SETTINGS-AUTOMATIC_COMMAND_TAB, sy-vline,
  WA_POC_SETTINGS-EVENT_TAB, sy-vline,
  WA_POC_SETTINGS-LAYOUT_TAB, sy-vline,
  WA_POC_SETTINGS-EXCL_DIG_SIG, sy-vline,
  WA_POC_SETTINGS-EXCL_SEQ_DEF, sy-vline,
  WA_POC_SETTINGS-EXCL_GL_VAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POC_SETTINGS 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_POC_SETTINGS 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_POC_SETTINGS INTO WA_POC_SETTINGS.


*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 LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_POC_SETTINGS-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POC_SETTINGS-LANGUAGE.
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_POC_SETTINGS_STR, 
RUN_MODE TYPE STRING,
SIGNATURE_TYPE TYPE STRING,
SIGNSTRAT_DEV TYPE STRING,
SIGNSTRAT_STEP TYPE STRING,
COMMAND_TAB TYPE STRING,
AUTOMATIC_COMMAND_TAB TYPE STRING,
EVENT_TAB TYPE STRING,
LAYOUT_TAB TYPE STRING,
EXCL_DIG_SIG TYPE STRING,
EXCL_SEQ_DEF TYPE STRING,
EXCL_GL_VAR TYPE STRING,
EXCL_CRST_MESS TYPE STRING,
EXCL_BLOCK TYPE STRING,
LANGUAGE TYPE STRING,
EVT_SIGN_SETTINGS TYPE STRING,
PROT_ACTV_DEAC TYPE STRING,
PROT_LOCK_UNLO TYPE STRING,
PROT_COMP TYPE STRING,
PROT_ENTR TYPE STRING,
SIG_STR_ACT_DEAC TYPE STRING,
SIG_STR_LOC_UNLO TYPE STRING,
SIG_STR_COMP TYPE STRING,
SIG_STR_ENTR TYPE STRING,
DA_SERVICE TYPE STRING,
GEN_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POC_SETTINGS_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_POC_SETTINGS_STR-RUN_MODE sy-vline 
WA_POC_SETTINGS_STR-SIGNATURE_TYPE sy-vline 
WA_POC_SETTINGS_STR-SIGNSTRAT_DEV sy-vline 
WA_POC_SETTINGS_STR-SIGNSTRAT_STEP sy-vline 
WA_POC_SETTINGS_STR-COMMAND_TAB sy-vline 
WA_POC_SETTINGS_STR-AUTOMATIC_COMMAND_TAB sy-vline 
WA_POC_SETTINGS_STR-EVENT_TAB sy-vline 
WA_POC_SETTINGS_STR-LAYOUT_TAB sy-vline 
WA_POC_SETTINGS_STR-EXCL_DIG_SIG sy-vline 
WA_POC_SETTINGS_STR-EXCL_SEQ_DEF sy-vline 
WA_POC_SETTINGS_STR-EXCL_GL_VAR sy-vline 
WA_POC_SETTINGS_STR-EXCL_CRST_MESS sy-vline 
WA_POC_SETTINGS_STR-EXCL_BLOCK sy-vline 
WA_POC_SETTINGS_STR-LANGUAGE sy-vline 
WA_POC_SETTINGS_STR-EVT_SIGN_SETTINGS sy-vline 
WA_POC_SETTINGS_STR-PROT_ACTV_DEAC sy-vline 
WA_POC_SETTINGS_STR-PROT_LOCK_UNLO sy-vline 
WA_POC_SETTINGS_STR-PROT_COMP sy-vline 
WA_POC_SETTINGS_STR-PROT_ENTR sy-vline 
WA_POC_SETTINGS_STR-SIG_STR_ACT_DEAC sy-vline 
WA_POC_SETTINGS_STR-SIG_STR_LOC_UNLO sy-vline 
WA_POC_SETTINGS_STR-SIG_STR_COMP sy-vline 
WA_POC_SETTINGS_STR-SIG_STR_ENTR sy-vline 
WA_POC_SETTINGS_STR-DA_SERVICE sy-vline 
WA_POC_SETTINGS_STR-GEN_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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