DESIGNER_ADD_DESIGN_QUERIES_FROM_RESULTS
Executes the specified query and evaluates results in the following columns:
QUERY_TEXT
(required): Text of potential design queries.QUERY_WEIGHT
(optional): The weight assigned to each query that indicates its importance relative to other queries, a real number >0 and ≤ 1. Database Designer uses this setting when creating the design to prioritize the query. IfDESIGNER_ADD_DESIGN_QUERIES_FROM_RESULTS
returns any results that omit this value, Database Designer sets their weight to 1.
After evaluating the queries in QUERY_TEXT
, DESIGNER_ADD_DESIGN_QUERIES_FROM_RESULTS
adds all accepted queries to the design. An unlimited number of queries can be added to the design.
Before you add queries to a design, you must add the queried tables with DESIGNER_ADD_DESIGN_TABLES
.
Behavior Type
Syntax
DESIGNER_ADD_DESIGN_QUERIES_FROM_RESULTS ( 'design‑name', 'query' )
Parameters
design‑name |
Name of the target design. |
query |
A valid SQL query whose results contain columns named |
Privileges
Non-superuser: design creator with all privileges required to execute the specified query, and all queries returned by this function
Errors
Database Designer returns an error in the following cases:
- The query contains illegal syntax.
- The query references:
- External or system tables only
- Local temporary or other non-design tables
- DELETE or UPDATE query has one or more subqueries.
- INSERT query does not include a SELECT clause.
- Database Designer cannot optimize the query.
Example
The following example queries the system table QUERY_REQUESTS
for all long-running queries (> 1 million microseconds) and adds them to the VMART_DESIGN
design. The query returns no information on query weights, so all queries are assigned a weight of 1:
=> SELECT DESIGNER_ADD_DESIGN_QUERIES_FROM_RESULTS ('VMART_DESIGN', 'SELECT request as query_text FROM query_requests where request_duration_ms > 1000000 AND request_type = ''QUERY'';');