---
title:  Advanced Querying
---

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This section includes advanced querying topics such as using query indexes, using query bind parameters, querying partitioned regions and query debugging.

-   **[Performance Considerations](../querying_basics/performance_considerations.html)**

    This topic covers considerations for improving query performance.

-   **[Monitoring Low Memory When Querying](../querying_basics/monitor_queries_for_low_memory.html)**

    The query monitoring feature prevents out-of-memory exceptions from occurring when you execute queries or create indexes.

-   **[Timeouts for Long-Running Queries](../query_additional/query_timeout.html)**

    Configure a timeout value for long running queries, such that they do
not complete, and <%=vars.product_name%> throws an exception when a 
query runs for longer than the configured value.

-   **[Using Query Bind Parameters](../query_additional/using_query_bind_parameters.html)**

    Using query bind parameters in <%=vars.product_name%> queries is similar to using prepared statements in SQL where parameters can be set during query execution. This allows you to build a query once and execute it multiple times by passing the query conditions during run time.

-   **[Querying Partitioned Regions](../querying_basics/querying_partitioned_regions.html)**

    <%=vars.product_name%> allows you to manage and store large amounts of data across distributed nodes using partitioned regions. The basic unit of storage for a partitioned region is a bucket, which resides on a <%=vars.product_name%> node and contains all the entries that map to a single hashcode. In a typical partitioned region query, the system distributes the query to all buckets across all nodes, then merges the result sets and sends back the query results.

-   **[Query Debugging](../query_additional/query_debugging.html)**

    You can debug a specific query at the query level by adding the `<trace>` keyword before the query string that you want to debug.