Also,The existing transformers (AliastoBean) requires alias name for all the projection but having alias for projection is creating issue in query "where clause" the actual column names in the "where clause" are generated as alias causing Oracle query to fail) Need to have result transformer to return list of vo (This is required to map totalcount to vo. Setting the all the properties in projection (Even though I require all the properties of class I need to specify all the property names in the projection list)Ģ. Select * from ( select this_.column1 as y0_, this_.column2 as y1_, this_.column3 as y2_,this_.column4 as 圓, count(*) over (partition by 1) as totalCount from table1 this_ where this_.GroupId in (?) and this_.status in (?, ?, ?, ?) and this_.UserId=? order by this_.UserId desc ) where rownum <= ?ġ. ProjectionsList.add(Projections.sqlProjection("count(*) over (partition by 1) as totalCount",
ProjectionsList.add(Property.forName("column4")) ProjectionsList.add(Property.forName("column3")) ProjectionsList.add(Property.forName("column2")) ProjectionsList.add(Property.forName("column1")) I'm able to achieve this by using sqlProjection
I cannot use named query since these are all dynamically generated by criteria so Please suggest how to add this feature to hibernate criteria (suggest options like extending dialect, using formula mapping) Select * from ( select this_.column1 as column1_0_, this_.column2 as column2_0_, this_.column3 as column3_6_0_, count(*) over (partition by 1) as totalcount from table1 this_ where this_.GroupId in (?) and this_.status in (?, ?, ?, ?) and this_.UserId=?) where rownum <= ? I want to combine this two queries together using oracle 10g analytic function
Where this_.GroupId in (?) and this_.status in (?, ?, ?, ?) and this_.UserId=?) where rownum <= ? Select * from ( select this_.column1 as column1_0_, this_.column2 as column2_0_, this_.column3 as column3_6_0_ from table1 this_ Select count(*) as y0_ from table1 this_ where this_.GroupId in (?) and this_.status in (?, ?, ?, ?) and this_.UserId=? TotalCount=(Integer) tProjection(Projections.rowCount()).uniqueResult() The following are the queries generated by the hibernate.ĬtResultTransformer(Criteria.PROJECTION) I’m using hibernate criteria with pagination option for fetching results and using projections for getting result count. In the next example we will see how to specify that.
Functions like LEAD, LAG, RANK, DENSERANK, ROWNUMBER, FIRST, FIRST VALUE, LAST, LAST VALUE depends on order of records. Analytical Functions (also see documentation) There are many categories of Analytical Functions. The following query returns the median salary for each manager in a subset of departments in the hr.I’m using Hibernate 3.x, Oracle 10g in our application. The functions SUM, COUNT, AVG, MIN, MAX are the common analytic functions the result of which does not depend on the order of the records. The following query returns the median salary for each department in the hr.employees table: SELECT department_id, MEDIAN(salary) PERCENTILE_DISC, which is useful for finding values for a given percentile without interpolation. MEDIAN is the specific case of PERCENTILE_CONT where the percentile value defaults to 0.5. PERCENTILE_CONT, which returns, for a given percentile, the value that corresponds to that percentile by way of interpolation. It returns, for each row, the value that would fall in the middle among a set of values within each partition.Ĭompare this function with these functions: You can specify only the query_partition_clause in its OVER clause. You can use MEDIAN as an analytic function. Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i Example (as an Analytic Function) Lets look at some Oracle DENSERANK function examples and explore how to use the DENSERANK function in Oracle/PLSQL. (RN - FRN) * (value of expression for row at CRN) (CRN - RN) * (value of expression for row at FRN) + The final result will be: if (CRN = FRN = RN) then The final result of the aggregate function is computed by linear interpolation between the values from rows at row numbers CRN = CEILING( RN) and FRN = FLOOR( RN). Using N as the number of rows in the group, Oracle calculates the row number ( RN) of interest with the formula RN = ( 1 + (0. The result of MEDIAN is computed by first ordering the rows. See Also: Table 2-10, "Implicit Type Conversion Matrix" for more information on implicit conversion and "Numeric Precedence" for information on numeric precedence