ABAP Select data from SAP table CMCB_S_LIQ_HIER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMCB_S_LIQ_HIER
*  INTO TABLE @DATA(IT_CMCB_S_LIQ_HIER2).
*--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_CMCB_S_LIQ_HIER INDEX 1 INTO DATA(WA_CMCB_S_LIQ_HIER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMCB_S_LIQ_HIER>-NODEID = 1.
<CMCB_S_LIQ_HIER>-IOBJNM = 1.
<CMCB_S_LIQ_HIER>-NODENAME = 1.
<CMCB_S_LIQ_HIER>-TLEVEL = 1.
<CMCB_S_LIQ_HIER>-LINK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMCB_S_LIQ_HIER-PARENTID, sy-vline,
  WA_CMCB_S_LIQ_HIER-CHILDID, sy-vline,
  WA_CMCB_S_LIQ_HIER-NEXTID, sy-vline,
  WA_CMCB_S_LIQ_HIER-DATEFROM, sy-vline,
  WA_CMCB_S_LIQ_HIER-DATETO, sy-vline,
  WA_CMCB_S_LIQ_HIER-INTERVL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMCB_S_LIQ_HIER 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_CMCB_S_LIQ_HIER 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_CMCB_S_LIQ_HIER INTO WA_CMCB_S_LIQ_HIER.


*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 NODENAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-NODENAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-NODENAME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AU172, internal->external for field AMT_PLANNED
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-AMT_PLANNED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-AMT_PLANNED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field AMT_USED
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-AMT_USED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-AMT_USED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field AMT_RESERVED
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-AMT_RESERVED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-AMT_RESERVED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field AMT_AVAILABLE
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-AMT_AVAILABLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-AMT_AVAILABLE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_S_LIQ_HIER-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_S_LIQ_HIER-POSID.
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_CMCB_S_LIQ_HIER_STR, 
NODEID TYPE STRING,
IOBJNM TYPE STRING,
NODENAME TYPE STRING,
TLEVEL TYPE STRING,
LINK TYPE STRING,
PARENTID TYPE STRING,
CHILDID TYPE STRING,
NEXTID TYPE STRING,
DATEFROM TYPE STRING,
DATETO TYPE STRING,
INTERVL TYPE STRING,
LIQ_ITEM TYPE STRING,
LIQ_ITEM_NAME TYPE STRING,
AMT_PLANNED TYPE STRING,
AMT_USED TYPE STRING,
AMT_RESERVED TYPE STRING,
AMT_AVAILABLE TYPE STRING,
WAERS TYPE STRING,
VENDOR TYPE STRING,
CUSTOMER TYPE STRING,
PRCTR TYPE STRING,
AUFNR TYPE STRING,
POSID TYPE STRING,
CONSM_AVAIL TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
ATTR1 TYPE STRING,
ATTR2 TYPE STRING,
ATTR3 TYPE STRING,
ATTR4 TYPE STRING,
MSGTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMCB_S_LIQ_HIER_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_CMCB_S_LIQ_HIER_STR-NODEID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-IOBJNM sy-vline 
WA_CMCB_S_LIQ_HIER_STR-NODENAME sy-vline 
WA_CMCB_S_LIQ_HIER_STR-TLEVEL sy-vline 
WA_CMCB_S_LIQ_HIER_STR-LINK sy-vline 
WA_CMCB_S_LIQ_HIER_STR-PARENTID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-CHILDID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-NEXTID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-DATEFROM sy-vline 
WA_CMCB_S_LIQ_HIER_STR-DATETO sy-vline 
WA_CMCB_S_LIQ_HIER_STR-INTERVL sy-vline 
WA_CMCB_S_LIQ_HIER_STR-LIQ_ITEM sy-vline 
WA_CMCB_S_LIQ_HIER_STR-LIQ_ITEM_NAME sy-vline 
WA_CMCB_S_LIQ_HIER_STR-AMT_PLANNED sy-vline 
WA_CMCB_S_LIQ_HIER_STR-AMT_USED sy-vline 
WA_CMCB_S_LIQ_HIER_STR-AMT_RESERVED sy-vline 
WA_CMCB_S_LIQ_HIER_STR-AMT_AVAILABLE sy-vline 
WA_CMCB_S_LIQ_HIER_STR-WAERS sy-vline 
WA_CMCB_S_LIQ_HIER_STR-VENDOR sy-vline 
WA_CMCB_S_LIQ_HIER_STR-CUSTOMER sy-vline 
WA_CMCB_S_LIQ_HIER_STR-PRCTR sy-vline 
WA_CMCB_S_LIQ_HIER_STR-AUFNR sy-vline 
WA_CMCB_S_LIQ_HIER_STR-POSID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-CONSM_AVAIL sy-vline 
WA_CMCB_S_LIQ_HIER_STR-MSGID sy-vline 
WA_CMCB_S_LIQ_HIER_STR-MSGNO sy-vline 
WA_CMCB_S_LIQ_HIER_STR-MSGTY sy-vline 
WA_CMCB_S_LIQ_HIER_STR-ATTR1 sy-vline 
WA_CMCB_S_LIQ_HIER_STR-ATTR2 sy-vline 
WA_CMCB_S_LIQ_HIER_STR-ATTR3 sy-vline 
WA_CMCB_S_LIQ_HIER_STR-ATTR4 sy-vline 
WA_CMCB_S_LIQ_HIER_STR-MSGTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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