[GitHub] [incubator-paimon] zhengshubin commented on issue #1048: [spark][Bug] Cannot write nullable values to non-null column when use insert into select

[via GitHub]

zhengshubin commented on issue #1048:
URL: 
https://github.com/apache/incubator-paimon/issues/1048#issuecomment-1564092215

   > Spark sql when executed, it will validate the column and table attribute 
like: if (queryExpr.nullable && !tableAttr.nullable) { addError(s"Cannot write 
nullable values to non-null column '${colPath.quoted}'") None } when queryExpr 
= "nvl(a, 1)", queryExpr.nullable will return false, so in spark-sql, nvl seems 
could resolve this question
   
   Thanks. It is usefully


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