HSQLDB:列名重复,不支持的内部操作:类型,强制转换的字符无效

CREATE TEXT TABLE ozizkaindata (
  jobName VARCHAR(255) NOT NULL,
  buildNumber VARCHAR(255) NOT NULL,
  config VARCHAR(255) NOT NULL,
  ar VARCHAR(255) NOT NULL,
  arFile VARCHAR(255) NOT NULL,
  deployDur VARCHAR(255) NOT NULL,
  warmupDur VARCHAR(255) NOT NULL,
  scale VARCHAR(255) NOT NULL
)

SELECT *, ((0.0 + warmupDur) / deployDur) AS xwarmupSlower FROM ozizkaindata ORDER BY deployDur

抛出:

Caused by: org.hsqldb.HsqlException: duplicate column name in derived table
    at org.hsqldb.error.Error.error(Unknown Source)
    at org.hsqldb.error.Error.error(Unknown Source)
    at org.hsqldb.QuerySpecification.addSelectColumnExpression(Unknown Source)
    at org.hsqldb.ParserDQL.XreadSelect(Unknown Source)
    ...

SELECT ((0.0 + warmupDur) / deployDur) FROM ozizkaindata ORDER BY deployDur

抛出:

Caused by: java.lang.RuntimeException: unsupported internal operation: Type
    at org.hsqldb.error.Error.runtimeError(Unknown Source)
    at org.hsqldb.types.Type.divide(Unknown Source)
    at org.hsqldb.ExpressionArithmetic.getValue(Unknown Source)
    at org.hsqldb.QuerySpecification.buildResult(Unknown Source)
    at org.hsqldb.QuerySpecification.getSingleResult(Unknown Source)
    at org.hsqldb.QuerySpecification.getResult(Unknown Source)
    at org.hsqldb.StatementQuery.getResult(Unknown Source)

SELECT ((0.0 + CAST(warmupDur AS INT)) / CAST(deployDur AS INT)) AS xwarmupSlower FROM ozizkaindata

抛出:

Caused by: org.hsqldb.HsqlException: data exception: invalid character value for cast
    at org.hsqldb.error.Error.error(Unknown Source)
    at org.hsqldb.error.Error.error(Unknown Source)
    at org.hsqldb.Scanner.convertToNumber(Unknown Source)
    at org.hsqldb.types.NumberType.convertToType(Unknown Source)
    at org.hsqldb.types.Type.castToType(Unknown Source)
    at org.hsqldb.ExpressionOp.getValue(Unknown Source)
    at org.hsqldb.ExpressionArithmetic.getValue(Unknown Source)
    at org.hsqldb.ExpressionArithmetic.getValue(Unknown Source)
    at org.hsqldb.QuerySpecification.buildResult(Unknown Source)
    at org.hsqldb.QuerySpecification.getSingleResult(Unknown Source)
    at org.hsqldb.QuerySpecification.getResult(Unknown Source)