ABAP Select data from SAP table /IAM/S_ISS_PRIN_ACT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /IAM/S_ISS_PRIN_ACT 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 /IAM/S_ISS_PRIN_ACT. 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 /IAM/S_ISS_PRIN_ACT 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_/IAM/S_ISS_PRIN_ACT TYPE STANDARD TABLE OF /IAM/S_ISS_PRIN_ACT,
      WA_/IAM/S_ISS_PRIN_ACT TYPE /IAM/S_ISS_PRIN_ACT,
      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: </IAM/S_ISS_PRIN_ACT> TYPE /IAM/S_ISS_PRIN_ACT.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /IAM/S_ISS_PRIN_ACT
  INTO TABLE IT_/IAM/S_ISS_PRIN_ACT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IAM/S_ISS_PRIN_ACT
*  INTO TABLE @DATA(IT_/IAM/S_ISS_PRIN_ACT2).
*--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_/IAM/S_ISS_PRIN_ACT INDEX 1 INTO DATA(WA_/IAM/S_ISS_PRIN_ACT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/IAM/S_ISS_PRIN_ACT ASSIGNING </IAM/S_ISS_PRIN_ACT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IAM/S_ISS_PRIN_ACT>-OVERVIEW = 1.
</IAM/S_ISS_PRIN_ACT>-ID = 1.
</IAM/S_ISS_PRIN_ACT>-TEMPLATE_PARENT = 1.
</IAM/S_ISS_PRIN_ACT>-TEMPL_DESC_PARENT = 1.
</IAM/S_ISS_PRIN_ACT>-SUBISSUE_ID = 1.

ENDLOOP.

LOOP AT IT_/IAM/S_ISS_PRIN_ACT INTO WA_/IAM/S_ISS_PRIN_ACT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IAM/S_ISS_PRIN_ACT-SUBISSUE_DESCRIPTION, sy-vline,
  WA_/IAM/S_ISS_PRIN_ACT-TEMPLATE, sy-vline,
  WA_/IAM/S_ISS_PRIN_ACT-TEMPL_DESC, sy-vline,
  WA_/IAM/S_ISS_PRIN_ACT-CATEGORY_DESCR, sy-vline,
  WA_/IAM/S_ISS_PRIN_ACT-SORT, sy-vline,
  WA_/IAM/S_ISS_PRIN_ACT-TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IAM/S_ISS_PRIN_ACT 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_/IAM/S_ISS_PRIN_ACT 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_/IAM/S_ISS_PRIN_ACT INTO WA_/IAM/S_ISS_PRIN_ACT.


*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 ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_ISS_PRIN_ACT-ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_ISS_PRIN_ACT-ID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_ISS_PRIN_ACT-CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_ISS_PRIN_ACT-CODE.
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_/IAM/S_ISS_PRIN_ACT_STR, 
OVERVIEW TYPE STRING,
ID TYPE STRING,
TEMPLATE_PARENT TYPE STRING,
TEMPL_DESC_PARENT TYPE STRING,
SUBISSUE_ID TYPE STRING,
SUBISSUE_DESCRIPTION TYPE STRING,
TEMPLATE TYPE STRING,
TEMPL_DESC TYPE STRING,
CATEGORY_DESCR TYPE STRING,
SORT TYPE STRING,
TYPE TYPE STRING,
TYPE_TEXT TYPE STRING,
RESPONSIBLE TYPE STRING,
RESPONSIBLE_NAME TYPE STRING,
PROC_START_DATE TYPE STRING,
PROC_START_TIME TYPE STRING,
PROC_START_ZONE TYPE STRING,
PROC_END_DATE TYPE STRING,
PROC_END_TIME TYPE STRING,
PROC_END_ZONE TYPE STRING,
EFFECT_DATE TYPE STRING,
EFFECT_TIME TYPE STRING,
EFFECT_ZONE TYPE STRING,
COMPL_DATE TYPE STRING,
COMPL_TIME TYPE STRING,
COMPL_ZONE TYPE STRING,
CODE_GROUP TYPE STRING,
CODE_GROUP_TXT TYPE STRING,
CODE TYPE STRING,
CODE_TXT TYPE STRING,
ACTIVITY_DESC TYPE STRING,
ACTIVITY_LTXT TYPE STRING,
ACTIVITY_LTXT_FORMATTED TYPE STRING,
RESPONSE_CODE_GROUP TYPE STRING,
RESPONSE_CODE_GROUP_TXT TYPE STRING,
RESPONSE_CODE TYPE STRING,
RESPONSE_CODE_TXT TYPE STRING,
RESPONSE_DESC TYPE STRING,
RESPONSE_LTXT TYPE STRING,
RESPONSE_LTXT_FORMATTED TYPE STRING,
AUTH_GROUP TYPE STRING,
AUTH_GROUP_DESCR TYPE STRING,
SEL_CRIT_CD TYPE STRING,
SEL_CRIT_DESCR TYPE STRING,
STATUS_DESCR TYPE STRING,
VALIDATION_DESCR TYPE STRING,
ORIGIN_DESCR TYPE STRING,
PROPOSAL_IND TYPE STRING,
MANDATORY TYPE STRING,
LONG_TERM TYPE STRING,
FOLLOWUP_ACTION_DESCR TYPE STRING,
EXP_START_DATE TYPE STRING,
EXP_END_DATE TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_BY TYPE STRING,
PARTY TYPE STRING,
OREF TYPE STRING,
ATTACH TYPE STRING,
RESOLUTION TYPE STRING,
CODE_GROUP TYPE STRING,
CODE_GROUP_TXT TYPE STRING,
CODE TYPE STRING,
CODE_TXT TYPE STRING,
DESCR TYPE STRING,
ACT_BUNDLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IAM/S_ISS_PRIN_ACT_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_/IAM/S_ISS_PRIN_ACT_STR-OVERVIEW sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ID sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TEMPLATE_PARENT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TEMPL_DESC_PARENT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-SUBISSUE_ID sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-SUBISSUE_DESCRIPTION sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TEMPLATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TEMPL_DESC sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CATEGORY_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-SORT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TYPE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-TYPE_TEXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSIBLE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSIBLE_NAME sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_START_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_START_TIME sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_START_ZONE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_END_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_END_TIME sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROC_END_ZONE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-EFFECT_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-EFFECT_TIME sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-EFFECT_ZONE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-COMPL_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-COMPL_TIME sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-COMPL_ZONE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_GROUP sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_GROUP_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ACTIVITY_DESC sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ACTIVITY_LTXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ACTIVITY_LTXT_FORMATTED sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_CODE_GROUP sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_CODE_GROUP_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_CODE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_CODE_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_DESC sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_LTXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESPONSE_LTXT_FORMATTED sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-AUTH_GROUP sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-AUTH_GROUP_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-SEL_CRIT_CD sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-SEL_CRIT_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-STATUS_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-VALIDATION_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ORIGIN_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PROPOSAL_IND sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-MANDATORY sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-LONG_TERM sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-FOLLOWUP_ACTION_DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-EXP_START_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-EXP_END_DATE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CREATED_BY sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CHANGED_BY sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-PARTY sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-OREF sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ATTACH sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-RESOLUTION sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_GROUP sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_GROUP_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-CODE_TXT sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-DESCR sy-vline 
WA_/IAM/S_ISS_PRIN_ACT_STR-ACT_BUNDLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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