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[SPARK-13442][SQL] Make type inference recognize boolean types
## What changes were proposed in this pull request? https://issues.apache.org/jira/browse/SPARK-13442 This PR adds the support for inferring `BooleanType` for schema. It supports to infer case-insensitive `true` / `false` as `BooleanType`. Unittests were added for `CSVInferSchemaSuite` and `CSVSuite` for end-to-end test. ## How was the this patch tested? This was tested with unittests and with `dev/run_tests` for coding style Author: hyukjinkwon <gurwls223@gmail.com> Closes #11315 from HyukjinKwon/SPARK-13442.
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,5 @@ | ||
bool | ||
"True" | ||
"False" | ||
|
||
"true" |
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