[FLINK-19735] TableFunction can not work in Flink View

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.11.1
• Component/s: Table SQL / API
• Assignee: Unassigned
• Reporter: shizhengchao
• Created: 20/Oct/20 11:13
• Updated: 20/Oct/20 12:29
• Resolved: 20/Oct/20 12:29

Description

TableFunction can't be work in Flink Sql. Here is my code：

CREATE TABLE test (
  myField   STRING,
  name      STRING
) WITH (
  'connector' = 'kafka-0.11',
  'topic' = 'xxxx',
  'properties.bootstrap.servers' = 'localhost:9092',
  'properties.group.id' = 'mygroup',
  'scan.startup.mode' = 'latest-offset',
  'format' = 'csv'
);
CREATE TABLE print (
  myField   STRING,
  newWord   STRING,
  newLength INT
) WITH (
  'connector' = 'print'
);

CREATE VIEW test_view AS
SELECT myField, newWord, newLength FROM test, LATERAL TABLE(SplitFunction(myField));

INSERT INTO print
SELECT * FROM test_view;

And the function code as this:

@FunctionHint(output = @DataTypeHint("ROW<newWord  STRING, newLength INT>"))
public class SplitFunction extends TableFunction<Row> {

    public void eval(String str) {
        for (String s : str.split(" ")) {
            collect(Row.of(s, s.length()));
        }
    }
}

run the sql，cause an error:

Unable to find source-code formatter for language: log. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yamlException in thread "main" org.apache.flink.table.api.ValidationException: SQL validation failed. From line 2, column 17 to line 2, column 23: Column 'newWord' not found in any table
	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.operations.SqlToOperationConverter.convertSqlInsert(SqlToOperationConverter.java:525)
	at org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:202)
	at org.apache.flink.table.planner.delegation.ParserImpl.parse(ParserImpl.java:78)
	at org.apache.flink.table.api.internal.StatementSetImpl.addInsertSql(StatementSetImpl.java:52)
	at com.fcbox.streaming.sql.submit.StreamingJob.callInsertInto(StreamingJob.java:208)
	at com.fcbox.streaming.sql.submit.StreamingJob.callCommand(StreamingJob.java:200)
	at com.fcbox.streaming.sql.submit.StreamingJob.run(StreamingJob.java:129)
	at com.fcbox.streaming.sql.submit.StreamingJob.main(StreamingJob.java:73)
Caused by: org.apache.calcite.runtime.CalciteContextException: From line 2, column 17 to line 2, column 23: Column 'newWord' not found in any table
	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:259)
	at org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visit(SqlValidatorImpl.java:5991)
	at org.apache.calcite.sql.validate.SqlValidatorImpl$SelectExpander.visit(SqlValidatorImpl.java:6154)
	at org.apache.calcite.sql.validate.SqlValidatorImpl$SelectExpander.visit(SqlValidatorImpl.java:6140)
	at org.apache.calcite.sql.SqlIdentifier.accept(SqlIdentifier.java:321)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectExpr(SqlValidatorImpl.java:5574)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:452)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4255)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3523)
	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)
	... 10 more
Caused by: org.apache.calcite.sql.validate.SqlValidatorException: Column 'newWord' not found in any table
	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)
	... 30 more

But it work effect in "INSERT INTO" statement:

INSERT INTO print
SELECT myField, newWord, newLength FROM test, LATERAL TABLE(SplitFunction(myField));

Issue Links

• is duplicated by: FLINK-18750 SqlValidatorException thrown when select from a view which contains a UDTF call