#120 Sub-queries cannot be used when column types are inferred

Simon Chenery — Wed, 27 Jan 2016 22:20:41 -0000

Originally reported in csvjdbc-develop forum topic Sub-queries cannot be used when column types are inferred.

Sub-queries cannot be used when column types are inferred

Simon Chenery — Wed, 27 Jan 2016 22:18:06 -0000

Using a sub-query when column types are inferred (connection property columnTypes="") causes the following exception:

java.sql.SQLException: Cannot infer column types until first row is fetched
at org.relique.jdbc.csv.CsvReader.inferColumnTypes(CsvReader.java:300)
at org.relique.jdbc.csv.CsvReader.getColumnTypes(CsvReader.java:292)
at org.relique.jdbc.csv.CsvResultSet.getMetaData(CsvResultSet.java:1405)
at org.relique.jdbc.csv.SubQueryExpression.evalList(SubQueryExpression.java:84)
at org.relique.jdbc.csv.InExpression.isTrue(InExpression.java:60)
at org.relique.jdbc.csv.ParsedExpression.isTrue(ParsedExpression.java:52)
at org.relique.jdbc.csv.CsvResultSet.next(CsvResultSet.java:925)
at org.relique.jdbc.csv.CsvDriver.writeToCsv(CsvDriver.java:307)
at org.relique.jdbc.csv.Runner2.main(Runner2.java:70)

SQL statement being executed is:

SELECT A FROM TEST WHERE A IN (SELECT B FROM TEST)

Recent changes to 120: Sub-queries cannot be used when column types are inferred

#120 Sub-queries cannot be used when column types are inferred

Sub-queries cannot be used when column types are inferred