mdayakar commented on code in PR #6204:
URL: https://github.com/apache/hive/pull/6204#discussion_r2556028794


##########
parser/src/java/org/apache/hadoop/hive/ql/parse/HiveParser.g:
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@@ -2363,7 +2363,8 @@ columnConstraintType
     ;
 
 defaultVal
-    : constant
+    : (PLUS | MINUS) unsignedNumericLiterals
+    | constant
     | function
     | castExpression

Review Comment:
   It throws `org.apache.hadoop.hive.ql.parse.ParseException` because as per 
grammar file `+`/`-` signs are allowed only for `unsignedNumericLiterals` which 
includes `Number`,`IntegralLiteral`,`NumberLiteral`.



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