|Oracle® OLAP DML Reference
11g Release 2 (11.2)
|PDF · Mobi · ePub|
The ADD_DIMENSION_MEMBER program adds a member to an OLAP cube dimension. An OLAP cube dimension (sometimes also called an "OLAP logical dimension") is an OLAP dimension that is defined as a first-class data object in the Oracle data dictionary.
Note:You cannot use this program to modify a cube dimension if a materialized view exists for that cube dimension or any cube in which it participates.
See also:"Cube-Aware OLAP DML Statements"
CALL ADD_DIMENSION_MEMBER(member_id, logical_dim, hier_list, level_name, -
parent-member_id, [ auto_compile, [ merge ]])
Because ADD_DIMENSION_MEMBER is an OLAP DML program with arguments, you invoke it using the OLAP DML CALL statement.
A text expression that is the value of the member that you want to add to the cube dimension.
A text expression that is the Oracle data dictionary name of the cube dimension being modified.
A multi-line text expression consisting of the Oracle data dictionary names of all of the hierarchies that you want the dimension member added to. Specify one hierarchy name per line.
When you want the member to be added to all of the cube dimension hierarchies, specify
For level hierarchies, a text value that specifies the hierarchy level at which the program will add the member to the cube dimension. For level hierarchies, the value you specify for level_name must be:
Compatible with the value you specify for parent_member_id
At the same hierarchy level as the existing cube dimension member because a cube dimension member cannot be in two different levels across hierarchies.
When the member participates in a value hierarchy (that is, when there are no levels), specify
A text expression that specifies the value of the member which is the parent of the member that you want to add to the cube dimension. When you want to add the member as the top member of a hierarchy, specify
A Boolean expression that specifies whether or not you want related analytic workspace objects (for example, he parent relation) to be updated immediately. The default value is
TRUE in which case all of the changes to the analytic workspace that are needed to add the cube dimension member happen now. Specify FALSE only when, for performance reasons, you want to make a bulk set of changes before issuing a compile. In this case, you need to explicitly compile the cube dimension before the values of the analytic workspace objects take effect as described in "Explicitly Compiling a Cube Dimension".
Note:Regardless of the value that you specify for this argument, the new member is always immediately added to the dimension -- even when an error is signaled during compilation.
A Boolean expression that specifies whether or not the program updates the dimension member if it exists or creates it if it does not. The default value is
When you specify
FALSE for auto_compile, you need to explicitly compile the cube dimension before the values of the analytic workspace objects take effect. You perform the compilation with a
DBMS_CUBE.BUILD package call. You can make this call within Analytic Workspace Manager by issuing the following statement where cube_dimension_name is the fully-qualified name of the cube dimension as defined in the Oracle data dictionary.
SQL PROCEDURE DBMS_CUBE.BUILD('cube_dimension_name USING (COMPILE)');
By default, issuing the above statement performs an UPDATE and COMMIT to the database. To prevent an UPDATE and COMMIT from occurring, add NO COMMIT to the statement as shown below.
SQL PROCEDURE DBMS_CUBE.BUILD'NO COMMIT cube_dimension_name USING (COMPILE)');
In an OLAP DML statement the text expression that you specify for an OLAP logical object (that is, a first-class OLAP object that is defined in the Oracle data dictionary such as a cube or cube dimension) must resolve to a value with the following form where LOGICAL_OBJECT_NAME is the Oracle data dictionary name of the OLAP object:
For example, valid expressions for referencing the XADEMO cube dimension in the XADEMO schema include:
'product' 'xademo.product' 'PRODUCT' 'XADEMO.product' '\"XADEMO\".\"PRODUCT\"'
Note:OLAP DML cube-aware programs interpret a text value that you specify for an OLAP logical object as upper case text unless you enclose the value in double quotes.
Unless otherwise noted, the scope of a cube-aware OLAP DML statement, just like other OLAP DML statement, is a single session. To persist any changes, you must have attached the analytic workspace in Read/Write mode before you issue the statement and issue OLAP DML UPDATE and COMMIT statements after you execute the statement. If the analytic workspace is attached Read Only or if you do not issue UPDATE and COMMIT statements, then the changes exist only in the session while the analytic workspace is attached.
If you specify an invalid value for level_name or parent_member_id, a compile-time error is thrown. Also, an error will occur if you specify a hierarchy level for the member that is different from the level it participates in another hierarchy. In this case, a call error is thrown if auto_compile is
This example adds members to an OLAP cube dimension named
Execute the following PL/SQL statement to report on the values and hierarchy of the
my_time cube dimension before any changes are made.
select dim_key||' '||level_name||' '||parent from my_time_lvl_hier_view order by dim_key asc; DIM_KEY||''||LEVEL_NAME||''||PARENT ------------------------------------------------------------------------------- L1_0 L1 L1_1 L1 L2_1 L2 L1_1 L2_2 L2 L1_1 L3_1 L3 L2_1 L3_2 L3 L2_1 L3_3 L3 L2_2 L3_4 L3 L2_2 L3_5 L3 L2_2 9 rows selected.
Execute the following PL/SQL statement to execute the user-written OLAP DML program named
exec dbms_aw.execute('call my_util_aw!add_l1_2');
The definition of the user-written OLAP DML program named
ADD_LQ_2 is shown below. Note that it calls the
ADD_DIMENSION_MEMBER program provided with the OLAP DML to add new members to the
my_time cube dimension.
DEFINE ADD_L1_2 PROGRAM PROGRAM VARIABLE _aw_dim text VARIABLE _aw_sales text VARIABLE _members text VARIABLE _member text VARIABLE _i integer _aw_dim = OBJORG(DIM 'my_time') _aw_sales = OBJORG(MEASURE 'my_cube' 'sales') " Adds L1_2, L2_3, L3_6 CALL ADD_DIMENSION_MEMBER('L1_2', 'my_time', NA, 'L1', NA, NO) CALL ADD_DIMENSION_MEMBER('L2_3', 'my_time', NA, 'L2', 'L1_2', NO) CALL ADD_DIMENSION_MEMBER('L3_6', 'my_time', NA, 'L3', 'L2_3', NO) " Set my_time attribute (to meaningless values) so dimension can compile LIMIT &_aw_dim TO 'L1_2', 'L2_3', 'L3_6' _members = VALUES(&_aw_dim) _i = 1 WHILE _i LE NUMLINES(_members) DO _member = EXTLINES(_members, _i, 1) _i = _i + 1 CALL UPDATE_ATTRIBUTE_VALUE(_member, 'my_time', 'start_date', - to_date('01/01/08', 'MM/DD/YY'), NO) CALL UPDATE_ATTRIBUTE_VALUE(_member, 'my_time', 'timespan', 1, NO) DOEND &_aw_sales(&_aw_dim 'L3_6') = 3 UPDATE COMMIT END
Issue the following PL/SQL statement to compile the
my_time cube dimension.
exec dbms_cube.build('MY_TIME USING (COMPILE)');
Report the values and hierarchy of the
my_time cube dimension after compilation
select dim_key||' '||level_name||' '||parent from my_time_lvl_hier_view order by dim_key asc; DIM_KEY||''||LEVEL_NAME||''||PARENT ------------------------------------------------------------------------------- L1_0 L1 L1_1 L1 L1_2 L1 L2_1 L2 L1_1 L2_2 L2 L1_1 L2_3 L2 L1_2 L3_1 L3 L2_1 L3_2 L3 L2_1 L3_3 L3 L2_2 L3_4 L3 L2_2 L3_5 L3 L2_2 L3_6 L3 L2_3 12 rows selected.
Execute the following PL/SQL statement to solve
my_cube with the new hierarchy.
exec dbms_cube.build(script => 'MY_CUBE USING (SOLVE)', add_dimensions => false);
Issue the following PL/SQL statement to report on the values of the
moving_sales measure in my-cube. Note that the new
my_time cube dimension values are shown.
select my_time||' '||lpad(sales, 2)||' '||lpad(moving_sales, 2) from my_cube_view order by my_time asc; MY_TIME||''||LPAD(SALES,2)||''||LPAD(MOVING_SALES,2) -------------------------------------------------------------------- L1_0 24 27 L1_1 14 38 L1_2 3 3 L2_1 2 5 L2_2 12 14 L2_3 3 3 L3_1 1 4 L3_2 1 2 L3_3 10 11 L3_4 1 11 L3_5 1 2 L3_6 3 3 12 rows selected.