DDL Statements in Confluent Cloud for Apache Flink¶
In Confluent Cloud for Apache Flink®️, a statement is a high-level resource that’s created when you enter a SQL query.
Data Definition Language (DDL) statements are imperative verbs that define metadata in Flink SQL by adding, changing, or deleting tables.
Unlike Data Manipulation Language (DML) statements, DDL statements modify only metadata and don’t change data. When you want to change data, use DML statements.
For valid lexical structure of statements, see Flink SQL Syntax in Confluent Cloud for Apache Flink.
Available DDL statements¶
These are the available DDL statements in Confluent Cloud for Flink SQL.
- ALTER
- CREATE
- DESCRIBE
- RESET
- SET
- SHOW
- USE