ABAP Select data from SAP table HCMT_BSP_PA_CN_R0021_SUB_B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HCMT_BSP_PA_CN_R0021_SUB_B 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 HCMT_BSP_PA_CN_R0021_SUB_B. 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 HCMT_BSP_PA_CN_R0021_SUB_B 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_HCMT_BSP_PA_CN_R0021_SUB_B TYPE STANDARD TABLE OF HCMT_BSP_PA_CN_R0021_SUB_B,
      WA_HCMT_BSP_PA_CN_R0021_SUB_B TYPE HCMT_BSP_PA_CN_R0021_SUB_B,
      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: <HCMT_BSP_PA_CN_R0021_SUB_B> TYPE HCMT_BSP_PA_CN_R0021_SUB_B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HCMT_BSP_PA_CN_R0021_SUB_B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HCMT_BSP_PA_CN_R0021_SUB_B
  INTO TABLE IT_HCMT_BSP_PA_CN_R0021_SUB_B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMT_BSP_PA_CN_R0021_SUB_B
*  INTO TABLE @DATA(IT_HCMT_BSP_PA_CN_R0021_SUB_B2).
*--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_HCMT_BSP_PA_CN_R0021_SUB_B INDEX 1 INTO DATA(WA_HCMT_BSP_PA_CN_R0021_SUB_B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HCMT_BSP_PA_CN_R0021_SUB_B ASSIGNING <HCMT_BSP_PA_CN_R0021_SUB_B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMT_BSP_PA_CN_R0021_SUB_B>-ICTY1 = 1.
<HCMT_BSP_PA_CN_R0021_SUB_B>-IDNM1 = 1.
<HCMT_BSP_PA_CN_R0021_SUB_B>-ICTXT1 = 1.
<HCMT_BSP_PA_CN_R0021_SUB_B>-ICTY2 = 1.
<HCMT_BSP_PA_CN_R0021_SUB_B>-IDNM2 = 1.

ENDLOOP.

LOOP AT IT_HCMT_BSP_PA_CN_R0021_SUB_B INTO WA_HCMT_BSP_PA_CN_R0021_SUB_B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMT_BSP_PA_CN_R0021_SUB_B-ICTXT2, sy-vline,
  WA_HCMT_BSP_PA_CN_R0021_SUB_B-ICTY3, sy-vline,
  WA_HCMT_BSP_PA_CN_R0021_SUB_B-IDNM3, sy-vline,
  WA_HCMT_BSP_PA_CN_R0021_SUB_B-ICTXT3, sy-vline,
  WA_HCMT_BSP_PA_CN_R0021_SUB_B-ICTY4, sy-vline,
  WA_HCMT_BSP_PA_CN_R0021_SUB_B-IDNM4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMT_BSP_PA_CN_R0021_SUB_B 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_HCMT_BSP_PA_CN_R0021_SUB_B 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_HCMT_BSP_PA_CN_R0021_SUB_B INTO WA_HCMT_BSP_PA_CN_R0021_SUB_B.


*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_HCMT_BSP_PA_CN_R0021_SUB_B_STR, 
ICTY1 TYPE STRING,
IDNM1 TYPE STRING,
ICTXT1 TYPE STRING,
ICTY2 TYPE STRING,
IDNM2 TYPE STRING,
ICTXT2 TYPE STRING,
ICTY3 TYPE STRING,
IDNM3 TYPE STRING,
ICTXT3 TYPE STRING,
ICTY4 TYPE STRING,
IDNM4 TYPE STRING,
ICTXT4 TYPE STRING,
ICTY5 TYPE STRING,
IDNM5 TYPE STRING,
ICTXT5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMT_BSP_PA_CN_R0021_SUB_B_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_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTY1 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-IDNM1 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTXT1 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTY2 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-IDNM2 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTXT2 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTY3 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-IDNM3 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTXT3 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTY4 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-IDNM4 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTXT4 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTY5 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-IDNM5 sy-vline 
WA_HCMT_BSP_PA_CN_R0021_SUB_B_STR-ICTXT5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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