- Apache Presto Tutorial
- Apache Presto - Home
- Apache Presto - Overview
- Apache Presto - Architecture
- Apache Presto - Installation
- Apache Presto - Configuration
- Apache Presto - Administration
- Apache Presto - SQL Operations
- Apache Presto - SQL Functions
- Apache Presto - MySQL Connector
- Apache Presto - JMX Connector
- Apache Presto - HIVE Connector
- Apache Presto - KAFKA Connector
- Apache Presto - JDBC Interface
- Custom Function Application
- Apache Presto Useful Resources
- Apache Presto - Quick Guide
- Apache Presto - Useful Resources
- Apache Presto - Discussion
Apache Presto - json_size(json, json_path)
Query
presto:default> SELECT json_size('{"a": [11, 12, 13]}', '$.a') as json;
Result
json ------ 3
apache_presto_sql_functions.htm
Advertisements