Flink SQL 是结构化的 query 语言，目前做不到 schema 自动变更。 所以如果你的 mysql 源的 schema 变更了，那么需要重新定义 Flink DDL，然后重启 Flink SQL 的作业。
On Tue, 10 Nov 2020 at 15:37, 丁浩浩 <18579099...@163.com> wrote: > 当mysql表字段修改之后，再用flink cdc接入，当使用到这个表的时候会提示字段不存在。 > Exception in thread "main" org.apache.flink.table.api.ValidationException: > SQL validation failed. From line 53, column 15 to line 53, column 20: > Column 'rounds' not found in table 'prcrs' > at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org > $apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:146) > at > org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:108) > at > org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:185) > at > org.apache.flink.table.planner.delegation.ParserImpl.parse(ParserImpl.java:78) > at > org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlQuery(TableEnvironmentImpl.java:664) > at > com.gaotu.data.performance.flink.job.sql.RegularAnalysis.main(RegularAnalysis.java:234) > Caused by: org.apache.calcite.runtime.CalciteContextException: From line > 53, column 15 to line 53, column 20: Column 'rounds' not found in table > 'prcrs' > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:423) > at > org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:457) > at > org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:839) > at > org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:824) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:5089) > at > org.apache.calcite.sql.validate.DelegatingScope.fullyQualify(DelegatingScope.java:439) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visit(SqlValidatorImpl.java:5991) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visit(SqlValidatorImpl.java:5976) > at > org.apache.calcite.sql.SqlIdentifier.accept(SqlIdentifier.java:321) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:134) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:101) > at > org.apache.calcite.sql.SqlOperator.acceptCall(SqlOperator.java:884) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visitScoped(SqlValidatorImpl.java:6009) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:50) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:33) > at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:134) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:101) > at > org.apache.calcite.sql.SqlOperator.acceptCall(SqlOperator.java:884) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visitScoped(SqlValidatorImpl.java:6009) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:50) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:33) > at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.expand(SqlValidatorImpl.java:5583) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateJoin(SqlValidatorImpl.java:3312) > at > org.apache.flink.table.planner.calcite.FlinkCalciteSqlValidator.validateJoin(FlinkCalciteSqlValidator.java:86) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3247) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateJoin(SqlValidatorImpl.java:3302) > at > org.apache.flink.table.planner.calcite.FlinkCalciteSqlValidator.validateJoin(FlinkCalciteSqlValidator.java:86) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3247) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3510) > at > org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) > at > org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1110) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1084) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3256) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateFrom(SqlValidatorImpl.java:3238) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3510) > at > org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) > at > org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1110) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1084) > at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1059) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:766) > at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org > $apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:141) > ... 5 more > Caused by: org.apache.calcite.sql.validate.SqlValidatorException: Column > 'rounds' not found in table 'prcrs' > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:423) > at > org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:457) > at > org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:550) > ... 49 more > > >
