liyafan82 opened a new pull request #2356:
URL: https://github.com/apache/calcite/pull/2356
We find weird literals for some user defined non-nullable types. Some
investigation shows that the problem lies in the `RexLiteral#toJavaString`
method.
In particular, it checks the type string suffix with an 8-character string:
```
if (!fullTypeString.endsWith("NOT NULL")) {
```
However, it trims the last 9 characters from the end of the string:
```
sb.append(fullTypeString, 0, fullTypeString.length() - 9);
```
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