SHOW CREATE TABLE for row type match reserved SQL keywords fails
Steps to reproduce: 
```sql
presto> create table memory.default.test (c1 row("from" integer));
CREATE TABLE
presto> show columns in memory.default.test;
 Column |       Type        | Extra | Comment 
--------+-------------------+-------+---------
 c1     | row(from integer) |       |         
(1 row)

presto> select * from memory.default.test;
 c1 
----
(0 rows)

presto> show create table memory.default.test;
Query 20191128_083045_00003_iysy5 failed: line 1:5: mismatched input 'from'. Expecting: <identifier>, <type>
io.prestosql.sql.parser.ParsingException: line 1:5: mismatched input 'from'. Expecting: <identifier>, <type>
        at io.prestosql.sql.parser.ErrorHandler.syntaxError(ErrorHandler.java:107)
        at org.antlr.v4.runtime.ProxyErrorListener.syntaxError(ProxyErrorListener.java:41)
        at org.antlr.v4.runtime.Parser.notifyErrorListeners(Parser.java:544)
        at org.antlr.v4.runtime.DefaultErrorStrategy.reportNoViableAlternative(DefaultErrorStrategy.java:310)
        at org.antlr.v4.runtime.DefaultErrorStrategy.reportError(DefaultErrorStrategy.java:136)
        at io.prestosql.sql.parser.SqlBaseParser.type(SqlBaseParser.java:10217)
        at io.prestosql.sql.parser.SqlBaseParser.standaloneType(SqlBaseParser.java:385)
        at io.prestosql.sql.parser.SqlParser.invokeParser(SqlParser.java:164)
        at io.prestosql.sql.parser.SqlParser.createType(SqlParser.java:114)
        at io.prestosql.sql.analyzer.TypeSignatureTranslator.toSqlType(TypeSignatureTranslator.java:62)
        at io.prestosql.sql.rewrite.ShowQueriesRewrite$Visitor.lambda$visitShowCreate$8(ShowQueriesRewrite.java:469)
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
        at io.prestosql.sql.rewrite.ShowQueriesRewrite$Visitor.visitShowCreate(ShowQueriesRewrite.java:471)
        at io.prestosql.sql.rewrite.ShowQueriesRewrite$Visitor.visitShowCreate(ShowQueriesRewrite.java:156)
        at io.prestosql.sql.tree.ShowCreate.accept(ShowCreate.java:67)
        at io.prestosql.sql.tree.AstVisitor.process(AstVisitor.java:27)
        at io.prestosql.sql.rewrite.ShowQueriesRewrite.rewrite(ShowQueriesRewrite.java:153)
        at io.prestosql.sql.rewrite.StatementRewrite.rewrite(StatementRewrite.java:57)
        at io.prestosql.sql.analyzer.Analyzer.analyze(Analyzer.java:80)
        at io.prestosql.sql.analyzer.Analyzer.analyze(Analyzer.java:75)
        at io.prestosql.execution.SqlQueryExecution.analyze(SqlQueryExecution.java:219)
        at io.prestosql.execution.SqlQueryExecution.<init>(SqlQueryExecution.java:178)
        at io.prestosql.execution.SqlQueryExecution.<init>(SqlQueryExecution.java:95)
        at io.prestosql.execution.SqlQueryExecution$SqlQueryExecutionFactory.createQueryExecution(SqlQueryExecution.java:715)
        at io.prestosql.dispatcher.LocalDispatchQueryFactory.lambda$createDispatchQuery$0(LocalDispatchQueryFactory.java:119)
        at io.prestosql.$gen.Presto_null__testversion____20191128_082928_2.call(Unknown Source)
        at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
        at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:57)
        at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.antlr.v4.runtime.NoViableAltException
        at org.antlr.v4.runtime.atn.ParserATNSimulator.noViableAlt(ParserATNSimulator.java:2028)
        at org.antlr.v4.runtime.atn.ParserATNSimulator.execATN(ParserATNSimulator.java:467)
        at org.antlr.v4.runtime.atn.ParserATNSimulator.adaptivePredict(ParserATNSimulator.java:393)
        at io.prestosql.sql.parser.SqlBaseParser.type(SqlBaseParser.java:9903)
        ... 33 more
show create table memory.default.test

```

Ref: https://github.com/prestosql/presto/issues/1962