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cannot cast columns to `numeric` on creation #16

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kevinushey opened this Issue Jun 9, 2016 · 1 comment

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kevinushey commented Jun 9, 2016

E.g.

> x_tbl <- x_tbl %>% mutate(binary = as.numeric(x > 4))
Error: org.apache.spark.sql.catalyst.parser.ParseException: 
DataType numeric() is not supported.(line 1, pos 103)

== SQL ==
SELECT `carat`, `cut`, `color`, `clarity`, `depth`, `table`, `price`, `x`, `y`, `z`, CAST(`x` > 4.0 AS NUMERIC) AS `binary`
-------------------------------------------------------------------------------------------------------^^^
FROM `diamonds`

    at org.apache.spark.sql.catalyst.parser.AstBuilder$$anonfun$visitPrimitiveDataType$1.apply(AstBuilder.scala:1418)
    at org.apache.spark.sql.catalyst.parser.AstBuilder$$anonfun$visitPrimitiveDataType$1.apply(AstBuilder.scala:1400)
    at org.apache.spark.sql.catalyst.parser.ParserUtils$.withOrigin(ParserUtils.scala:89)
    at org.apache.spark.sql.catalyst.parser.AstBuilder.visitPrimitiveDataType(AstBuilder.scala:1399)
    at org.apache.spark.sql.catalyst.parser.AstBuilder.visitPrimitiveDataType(AstBuilder.scala:42)
    at org.apache.spark.sql.catalyst.parser.SqlBaseParser$PrimitiveDataTypeContext.accept(SqlBaseParser.java:11989) 

That cast probably needs to be DOUBLE, not NUMERIC, but as.double() does not appear to be supported for SQL generation either.

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kevinushey Jun 9, 2016

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Resolved by amending the sql_translate_env method definition.

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kevinushey commented Jun 9, 2016

Resolved by amending the sql_translate_env method definition.

@kevinushey kevinushey closed this Jun 9, 2016

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