The folloiwng examples demonstrate how to use Amazon Athena SQL queries with complex filtering to locate FHIR data from a HealthLake data store.
Example See medications found in the MedicationStatement resource type The following example query shows you how to organize the nested JSON imported into Athena using SQL. The query uses the FHIR meta element to indicate when a medication has been added by HealthLake's integrated natural language...
Use the SQL editor in IBM® Data Server Manager (DSM) to run a complex query. About this task This complex query has common table expressions, aggregate functions, and a ranking function to rank products based on quantity sold online and quantity sold in stores. ...
avoiding the I/O penalty of reading the embedded data. When complex types are nested within a column, the data is physically divided at a very granular level; for example, a query referring to data nested multiple levels deep in a complex type column does not have to read all the data ...
EF Core also translates queries where an aggregate operator on the grouping appears in a Where or OrderBy (or other ordering) LINQ operator. It usesHAVINGclause in SQL for the where clause. The part of the query before applying the GroupBy operator can be any complex query as long as it ...
In the following example, an open connection to the AdventureWorks2022 sample database is passed in to the function, a complex statement is constructed that combines a stored procedure call with a SQL statement, the statements are run, and then adoloop is used to process all the result sets ...
The element whose position you want to query. The data type of this parameter must be the same as the data type of the elements in Array a. Return value A value of the BIGINT type is returned. The return value varies based on the following rules: If Array a or element is null, ...
Here is an example of an SQL block for Oracle: --/scripttodisableforeignkeysdeclarecursortabsisselecttable_name,constraint_namefromuser_constraintswhereconstraint_type='R'andowner=user;beginforjintabsloopexecuteimmediate('alter table '||j.table_name||' disable constraint'||j.constraint_name);endlo...
to easily access nested fields directly from your query. For example, this query selects the Latitude and Longitude coordinates under the Location property in the preceding JSON data. The dot notation can be used to navigate multiple levels as shown below. ...
How to extract columns name from complex query having subquery like below: SELECT "Gender" AS "Gender", "Ethnicity" AS "Ethnicity", count(*) AS "count" FROM (Select distinct avg(t3."Age") As "Age", t1."Ethnicity" As "Ethnicity", t2."Gend...