ABAP Select data from SAP table CCIHS_IAHITT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCIHS_IAHITT
*  INTO TABLE @DATA(IT_CCIHS_IAHITT2).
*--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_CCIHS_IAHITT INDEX 1 INTO DATA(WA_CCIHS_IAHITT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCIHS_IAHITT>-EVTIME = 1.
<CCIHS_IAHITT>-IATYPETXT = 1.
<CCIHS_IAHITT>-IASHSTATNAM = 1.
<CCIHS_IAHITT>-TITLE = 1.
<CCIHS_IAHITT>-BIRTHDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCIHS_IAHITT-OFFJOBDAT, sy-vline,
  WA_CCIHS_IAHITT-OFFJOBTIME, sy-vline,
  WA_CCIHS_IAHITT-IALPREPID, sy-vline,
  WA_CCIHS_IAHITT-IPSTATNAM, sy-vline,
  WA_CCIHS_IAHITT-IPSHSTATNAM, sy-vline,
  WA_CCIHS_IAHITT-WAID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCIHS_IAHITT 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_CCIHS_IAHITT 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_CCIHS_IAHITT INTO WA_CCIHS_IAHITT.


*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 CHRID, internal->external for field IALPREPID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_IAHITT-IALPREPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_IAHITT-IALPREPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRID, internal->external for field WAID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_IAHITT-WAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_IAHITT-WAID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_IAHITT-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_IAHITT-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_IAHITT-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_IAHITT-EQUNR.
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_CCIHS_IAHITT_STR, 
EVTIME TYPE STRING,
IATYPETXT TYPE STRING,
IASHSTATNAM TYPE STRING,
TITLE TYPE STRING,
BIRTHDATE TYPE STRING,
OFFJOBDAT TYPE STRING,
OFFJOBTIME TYPE STRING,
IALPREPID TYPE STRING,
IPSTATNAM TYPE STRING,
IPSHSTATNAM TYPE STRING,
WAID TYPE STRING,
WANAM TYPE STRING,
ACLOC TYPE STRING,
ACLOCTXT TYPE STRING,
TPLNR TYPE STRING,
PLTXT TYPE STRING,
EQUNR TYPE STRING,
EQTXT TYPE STRING,
IALPCAT TYPE STRING,
IALPCATXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCIHS_IAHITT_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_CCIHS_IAHITT_STR-EVTIME sy-vline 
WA_CCIHS_IAHITT_STR-IATYPETXT sy-vline 
WA_CCIHS_IAHITT_STR-IASHSTATNAM sy-vline 
WA_CCIHS_IAHITT_STR-TITLE sy-vline 
WA_CCIHS_IAHITT_STR-BIRTHDATE sy-vline 
WA_CCIHS_IAHITT_STR-OFFJOBDAT sy-vline 
WA_CCIHS_IAHITT_STR-OFFJOBTIME sy-vline 
WA_CCIHS_IAHITT_STR-IALPREPID sy-vline 
WA_CCIHS_IAHITT_STR-IPSTATNAM sy-vline 
WA_CCIHS_IAHITT_STR-IPSHSTATNAM sy-vline 
WA_CCIHS_IAHITT_STR-WAID sy-vline 
WA_CCIHS_IAHITT_STR-WANAM sy-vline 
WA_CCIHS_IAHITT_STR-ACLOC sy-vline 
WA_CCIHS_IAHITT_STR-ACLOCTXT sy-vline 
WA_CCIHS_IAHITT_STR-TPLNR sy-vline 
WA_CCIHS_IAHITT_STR-PLTXT sy-vline 
WA_CCIHS_IAHITT_STR-EQUNR sy-vline 
WA_CCIHS_IAHITT_STR-EQTXT sy-vline 
WA_CCIHS_IAHITT_STR-IALPCAT sy-vline 
WA_CCIHS_IAHITT_STR-IALPCATXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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