flink 报错 Computed columns for DDL is not supported yet!

r囧r小猫 2022-12-20 12:48 226阅读 0赞

**flink 版本 1.10.1**

## flink 报错信息如下 ##

Exception in thread "main" org.apache.flink.table.sqlexec.SqlConversionException: Computed columns for DDL is not supported yet!
    	at org.apache.flink.table.sqlexec.SqlToOperationConverter.createTableSchema(SqlToOperationConverter.java:456)
    	at org.apache.flink.table.sqlexec.SqlToOperationConverter.convertCreateTable(SqlToOperationConverter.java:183)
    	at org.apache.flink.table.sqlexec.SqlToOperationConverter.convert(SqlToOperationConverter.java:127)
    	at org.apache.flink.table.planner.ParserImpl.parse(ParserImpl.java:66)
    	at org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlUpdate(TableEnvironmentImpl.java:484)
    	at com.lty.KafkaWindowTest$.main(KafkaWindowTest.scala:45)
    	at com.lty.KafkaWindowTest.main(KafkaWindowTest.scala)

原因是我flink sql ddl 创建表的时候使用了内部函数 proctime（），但是flink Table api 不支持这样做  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMTAzMjM1NTA5MQ_size_16_color_FFFFFF_t_70_pic_center]

## 解决办法： ##

**使用blink Table Api**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMTAzMjM1NTA5MQ_size_16_color_FFFFFF_t_70_pic_center 1]

**注意pom 需要引入依赖：**

<dependency>
                <groupId>org.apache.flink</groupId>
                <artifactId>flink-table-planner_2.12</artifactId>
                <version>1.10.1</version>
            </dependency>
    
            <dependency>
                <groupId>org.apache.flink</groupId>
                <artifactId>flink-table-planner-blink_2.12</artifactId>
                <version>1.10.1</version>
            </dependency>
    
            <dependency>
                <groupId>org.apache.flink</groupId>
                <artifactId>flink-table-api-java-bridge_2.11</artifactId>
                <version>1.10.1</version>
            </dependency>
            <dependency>
                <groupId>org.apache.flink</groupId>
                <artifactId>flink-table-api-scala-bridge_2.12</artifactId>
                <version>1.10.1</version>
            </dependency>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMTAzMjM1NTA5MQ_size_16_color_FFFFFF_t_70_pic_center]: /images/20221120/b2bf8fadd6554c34b01d8e3fe8bab57d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMTAzMjM1NTA5MQ_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221120/3b1337497dd545e98f06eddbcf6b39ef.png