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From dav...@apache.org
Subject spark git commit: [SPARK-13431] [SQL] [test-maven] split keywords from ExpressionParser.g
Date Wed, 24 Feb 2016 05:22:05 GMT
Repository: spark
Updated Branches:
  refs/heads/master e9533b419 -> 86c852cf2


[SPARK-13431] [SQL] [test-maven] split keywords from ExpressionParser.g

## What changes were proposed in this pull request?

This PR pull all the keywords (and some others) from ExpressionParser.g as KeywordParser.g,
because ExpressionParser is too large to compile.

## How was the this patch tested?

unit test, maven build

Closes #11329

Author: Davies Liu <davies@databricks.com>

Closes #11331 from davies/split_expr.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/86c852cf
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/86c852cf
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/86c852cf

Branch: refs/heads/master
Commit: 86c852cf2ecdb2d348dad089640b46d1d97d7ead
Parents: e9533b4
Author: Davies Liu <davies@databricks.com>
Authored: Tue Feb 23 21:22:00 2016 -0800
Committer: Davies Liu <davies.liu@gmail.com>
Committed: Tue Feb 23 21:22:00 2016 -0800

----------------------------------------------------------------------
 .../sql/catalyst/parser/ExpressionParser.g      | 195 ---------------
 .../spark/sql/catalyst/parser/KeywordParser.g   | 244 +++++++++++++++++++
 .../spark/sql/catalyst/parser/SparkSqlParser.g  |   2 +-
 3 files changed, 245 insertions(+), 196 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/spark/blob/86c852cf/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
----------------------------------------------------------------------
diff --git a/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
index 10f2e24..13a6a2d 100644
--- a/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
+++ b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
@@ -398,198 +398,3 @@ precedenceOrExpression
     :
     precedenceAndExpression (precedenceOrOperator^ precedenceAndExpression)*
     ;
-
-
-booleanValue
-    :
-    KW_TRUE^ | KW_FALSE^
-    ;
-
-booleanValueTok
-   :
-   KW_TRUE -> TOK_TRUE
-   | KW_FALSE -> TOK_FALSE
-   ;
-
-tableOrPartition
-   :
-   tableName partitionSpec? -> ^(TOK_TAB tableName partitionSpec?)
-   ;
-
-partitionSpec
-    :
-    KW_PARTITION
-     LPAREN partitionVal (COMMA  partitionVal )* RPAREN -> ^(TOK_PARTSPEC partitionVal
+)
-    ;
-
-partitionVal
-    :
-    identifier (EQUAL constant)? -> ^(TOK_PARTVAL identifier constant?)
-    ;
-
-dropPartitionSpec
-    :
-    KW_PARTITION
-     LPAREN dropPartitionVal (COMMA  dropPartitionVal )* RPAREN -> ^(TOK_PARTSPEC dropPartitionVal
+)
-    ;
-
-dropPartitionVal
-    :
-    identifier dropPartitionOperator constant -> ^(TOK_PARTVAL identifier dropPartitionOperator
constant)
-    ;
-
-dropPartitionOperator
-    :
-    EQUAL | NOTEQUAL | LESSTHANOREQUALTO | LESSTHAN | GREATERTHANOREQUALTO | GREATERTHAN
-    ;
-
-sysFuncNames
-    :
-      KW_AND
-    | KW_OR
-    | KW_NOT
-    | KW_LIKE
-    | KW_IF
-    | KW_CASE
-    | KW_WHEN
-    | KW_TINYINT
-    | KW_SMALLINT
-    | KW_INT
-    | KW_BIGINT
-    | KW_FLOAT
-    | KW_DOUBLE
-    | KW_BOOLEAN
-    | KW_STRING
-    | KW_BINARY
-    | KW_ARRAY
-    | KW_MAP
-    | KW_STRUCT
-    | KW_UNIONTYPE
-    | EQUAL
-    | EQUAL_NS
-    | NOTEQUAL
-    | LESSTHANOREQUALTO
-    | LESSTHAN
-    | GREATERTHANOREQUALTO
-    | GREATERTHAN
-    | DIVIDE
-    | PLUS
-    | MINUS
-    | STAR
-    | MOD
-    | DIV
-    | AMPERSAND
-    | TILDE
-    | BITWISEOR
-    | BITWISEXOR
-    | KW_RLIKE
-    | KW_REGEXP
-    | KW_IN
-    | KW_BETWEEN
-    ;
-
-descFuncNames
-    :
-      (sysFuncNames) => sysFuncNames
-    | StringLiteral
-    | functionIdentifier
-    ;
-
-//We are allowed to use From and To in CreateTableUsing command's options (actually seems
we can use any string as the option key). But we can't simply add them into nonReserved because
by doing that we mess other existing rules. So we create a looseIdentifier and looseNonReserved
here.
-looseIdentifier
-    :
-    Identifier
-    | looseNonReserved -> Identifier[$looseNonReserved.text]
-    // If it decides to support SQL11 reserved keywords, i.e., useSQL11ReservedKeywordsForIdentifier()=false,
-    // the sql11keywords in existing q tests will NOT be added back.
-    | {useSQL11ReservedKeywordsForIdentifier()}? sql11ReservedKeywordsUsedAsIdentifier ->
Identifier[$sql11ReservedKeywordsUsedAsIdentifier.text]
-    ;
-
-identifier
-    :
-    Identifier
-    | nonReserved -> Identifier[$nonReserved.text]
-    // If it decides to support SQL11 reserved keywords, i.e., useSQL11ReservedKeywordsForIdentifier()=false,
-    // the sql11keywords in existing q tests will NOT be added back.
-    | {useSQL11ReservedKeywordsForIdentifier()}? sql11ReservedKeywordsUsedAsIdentifier ->
Identifier[$sql11ReservedKeywordsUsedAsIdentifier.text]
-    ;
-
-functionIdentifier
-@init { gParent.pushMsg("function identifier", state); }
-@after { gParent.popMsg(state); }
-    :
-    identifier (DOT identifier)? -> identifier+
-    ;
-
-principalIdentifier
-@init { gParent.pushMsg("identifier for principal spec", state); }
-@after { gParent.popMsg(state); }
-    : identifier
-    | QuotedIdentifier
-    ;
-
-looseNonReserved
-    : nonReserved | KW_FROM | KW_TO
-    ;
-
-//The new version of nonReserved + sql11ReservedKeywordsUsedAsIdentifier = old version of
nonReserved
-//Non reserved keywords are basically the keywords that can be used as identifiers.
-//All the KW_* are automatically not only keywords, but also reserved keywords.
-//That means, they can NOT be used as identifiers.
-//If you would like to use them as identifiers, put them in the nonReserved list below.
-//If you are not sure, please refer to the SQL2011 column in
-//http://www.postgresql.org/docs/9.5/static/sql-keywords-appendix.html
-nonReserved
-    :
-    KW_ADD | KW_ADMIN | KW_AFTER | KW_ANALYZE | KW_ARCHIVE | KW_ASC | KW_BEFORE | KW_BUCKET
| KW_BUCKETS
-    | KW_CASCADE | KW_CHANGE | KW_CLUSTER | KW_CLUSTERED | KW_CLUSTERSTATUS | KW_COLLECTION
| KW_COLUMNS
-    | KW_COMMENT | KW_COMPACT | KW_COMPACTIONS | KW_COMPUTE | KW_CONCATENATE | KW_CONTINUE
| KW_DATA | KW_DAY
-    | KW_DATABASES | KW_DATETIME | KW_DBPROPERTIES | KW_DEFERRED | KW_DEFINED | KW_DELIMITED
| KW_DEPENDENCY
-    | KW_DESC | KW_DIRECTORIES | KW_DIRECTORY | KW_DISABLE | KW_DISTRIBUTE | KW_ELEM_TYPE
-    | KW_ENABLE | KW_ESCAPED | KW_EXCLUSIVE | KW_EXPLAIN | KW_EXPORT | KW_FIELDS | KW_FILE
| KW_FILEFORMAT
-    | KW_FIRST | KW_FORMAT | KW_FORMATTED | KW_FUNCTIONS | KW_HOLD_DDLTIME | KW_HOUR | KW_IDXPROPERTIES
| KW_IGNORE
-    | KW_INDEX | KW_INDEXES | KW_INPATH | KW_INPUTDRIVER | KW_INPUTFORMAT | KW_ITEMS | KW_JAR
-    | KW_KEYS | KW_KEY_TYPE | KW_LIMIT | KW_LINES | KW_LOAD | KW_LOCATION | KW_LOCK | KW_LOCKS
| KW_LOGICAL | KW_LONG
-    | KW_MAPJOIN | KW_MATERIALIZED | KW_METADATA | KW_MINUS | KW_MINUTE | KW_MONTH | KW_MSCK
| KW_NOSCAN | KW_NO_DROP | KW_OFFLINE
-    | KW_OPTION | KW_OUTPUTDRIVER | KW_OUTPUTFORMAT | KW_OVERWRITE | KW_OWNER | KW_PARTITIONED
| KW_PARTITIONS | KW_PLUS | KW_PRETTY
-    | KW_PRINCIPALS | KW_PROTECTION | KW_PURGE | KW_READ | KW_READONLY | KW_REBUILD | KW_RECORDREADER
| KW_RECORDWRITER
-    | KW_RELOAD | KW_RENAME | KW_REPAIR | KW_REPLACE | KW_REPLICATION | KW_RESTRICT | KW_REWRITE
-    | KW_ROLE | KW_ROLES | KW_SCHEMA | KW_SCHEMAS | KW_SECOND | KW_SEMI | KW_SERDE | KW_SERDEPROPERTIES
| KW_SERVER | KW_SETS | KW_SHARED
-    | KW_SHOW | KW_SHOW_DATABASE | KW_SKEWED | KW_SORT | KW_SORTED | KW_SSL | KW_STATISTICS
| KW_STORED
-    | KW_STREAMTABLE | KW_STRING | KW_STRUCT | KW_TABLES | KW_TBLPROPERTIES | KW_TEMPORARY
| KW_TERMINATED
-    | KW_TINYINT | KW_TOUCH | KW_TRANSACTIONS | KW_UNARCHIVE | KW_UNDO | KW_UNIONTYPE | KW_UNLOCK
| KW_UNSET
-    | KW_UNSIGNED | KW_URI | KW_USE | KW_UTC | KW_UTCTIMESTAMP | KW_VALUE_TYPE | KW_VIEW
| KW_WHILE | KW_YEAR
-    | KW_WORK
-    | KW_TRANSACTION
-    | KW_WRITE
-    | KW_ISOLATION
-    | KW_LEVEL
-    | KW_SNAPSHOT
-    | KW_AUTOCOMMIT
-    | KW_ANTI
-    | KW_WEEK | KW_MILLISECOND | KW_MICROSECOND
-    | KW_CLEAR | KW_LAZY | KW_CACHE | KW_UNCACHE | KW_DFS
-;
-
-//The following SQL2011 reserved keywords are used as cast function name only, but not as
identifiers.
-sql11ReservedKeywordsUsedAsCastFunctionName
-    :
-    KW_BIGINT | KW_BINARY | KW_BOOLEAN | KW_CURRENT_DATE | KW_CURRENT_TIMESTAMP | KW_DATE
| KW_DOUBLE | KW_FLOAT | KW_INT | KW_SMALLINT | KW_TIMESTAMP
-    ;
-
-//The following SQL2011 reserved keywords are used as identifiers in many q tests, they may
be added back due to backward compatibility.
-//We are planning to remove the following whole list after several releases.
-//Thus, please do not change the following list unless you know what to do.
-sql11ReservedKeywordsUsedAsIdentifier
-    :
-    KW_ALL | KW_ALTER | KW_ARRAY | KW_AS | KW_AUTHORIZATION | KW_BETWEEN | KW_BIGINT | KW_BINARY
| KW_BOOLEAN
-    | KW_BOTH | KW_BY | KW_CREATE | KW_CUBE | KW_CURRENT_DATE | KW_CURRENT_TIMESTAMP | KW_CURSOR
| KW_DATE | KW_DECIMAL | KW_DELETE | KW_DESCRIBE
-    | KW_DOUBLE | KW_DROP | KW_EXISTS | KW_EXTERNAL | KW_FALSE | KW_FETCH | KW_FLOAT | KW_FOR
| KW_FULL | KW_GRANT
-    | KW_GROUP | KW_GROUPING | KW_IMPORT | KW_IN | KW_INNER | KW_INSERT | KW_INT | KW_INTERSECT
| KW_INTO | KW_IS | KW_LATERAL
-    | KW_LEFT | KW_LIKE | KW_LOCAL | KW_NONE | KW_NULL | KW_OF | KW_ORDER | KW_OUT | KW_OUTER
| KW_PARTITION
-    | KW_PERCENT | KW_PROCEDURE | KW_RANGE | KW_READS | KW_REVOKE | KW_RIGHT
-    | KW_ROLLUP | KW_ROW | KW_ROWS | KW_SET | KW_SMALLINT | KW_TABLE | KW_TIMESTAMP | KW_TO
| KW_TRIGGER | KW_TRUE
-    | KW_TRUNCATE | KW_UNION | KW_UPDATE | KW_USER | KW_USING | KW_VALUES | KW_WITH
-//The following two keywords come from MySQL. Although they are not keywords in SQL2011,
they are reserved keywords in MySQL.
-    | KW_REGEXP | KW_RLIKE
-    ;

http://git-wip-us.apache.org/repos/asf/spark/blob/86c852cf/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/KeywordParser.g
----------------------------------------------------------------------
diff --git a/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/KeywordParser.g
b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/KeywordParser.g
new file mode 100644
index 0000000..12cd5f5
--- /dev/null
+++ b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/KeywordParser.g
@@ -0,0 +1,244 @@
+/**
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+   This file is an adaptation of Hive's org/apache/hadoop/hive/ql/IdentifiersParser.g grammar.
+*/
+
+parser grammar KeywordParser;
+
+options
+{
+output=AST;
+ASTLabelType=CommonTree;
+backtrack=false;
+k=3;
+}
+
+@members {
+  @Override
+  public Object recoverFromMismatchedSet(IntStream input,
+      RecognitionException re, BitSet follow) throws RecognitionException {
+    throw re;
+  }
+  @Override
+  public void displayRecognitionError(String[] tokenNames,
+      RecognitionException e) {
+    gParent.displayRecognitionError(tokenNames, e);
+  }
+  protected boolean useSQL11ReservedKeywordsForIdentifier() {
+    return gParent.useSQL11ReservedKeywordsForIdentifier();
+  }
+}
+
+@rulecatch {
+catch (RecognitionException e) {
+  throw e;
+}
+}
+
+booleanValue
+    :
+    KW_TRUE^ | KW_FALSE^
+    ;
+
+booleanValueTok
+   :
+   KW_TRUE -> TOK_TRUE
+   | KW_FALSE -> TOK_FALSE
+   ;
+
+tableOrPartition
+   :
+   tableName partitionSpec? -> ^(TOK_TAB tableName partitionSpec?)
+   ;
+
+partitionSpec
+    :
+    KW_PARTITION
+     LPAREN partitionVal (COMMA  partitionVal )* RPAREN -> ^(TOK_PARTSPEC partitionVal
+)
+    ;
+
+partitionVal
+    :
+    identifier (EQUAL constant)? -> ^(TOK_PARTVAL identifier constant?)
+    ;
+
+dropPartitionSpec
+    :
+    KW_PARTITION
+     LPAREN dropPartitionVal (COMMA  dropPartitionVal )* RPAREN -> ^(TOK_PARTSPEC dropPartitionVal
+)
+    ;
+
+dropPartitionVal
+    :
+    identifier dropPartitionOperator constant -> ^(TOK_PARTVAL identifier dropPartitionOperator
constant)
+    ;
+
+dropPartitionOperator
+    :
+    EQUAL | NOTEQUAL | LESSTHANOREQUALTO | LESSTHAN | GREATERTHANOREQUALTO | GREATERTHAN
+    ;
+
+sysFuncNames
+    :
+      KW_AND
+    | KW_OR
+    | KW_NOT
+    | KW_LIKE
+    | KW_IF
+    | KW_CASE
+    | KW_WHEN
+    | KW_TINYINT
+    | KW_SMALLINT
+    | KW_INT
+    | KW_BIGINT
+    | KW_FLOAT
+    | KW_DOUBLE
+    | KW_BOOLEAN
+    | KW_STRING
+    | KW_BINARY
+    | KW_ARRAY
+    | KW_MAP
+    | KW_STRUCT
+    | KW_UNIONTYPE
+    | EQUAL
+    | EQUAL_NS
+    | NOTEQUAL
+    | LESSTHANOREQUALTO
+    | LESSTHAN
+    | GREATERTHANOREQUALTO
+    | GREATERTHAN
+    | DIVIDE
+    | PLUS
+    | MINUS
+    | STAR
+    | MOD
+    | DIV
+    | AMPERSAND
+    | TILDE
+    | BITWISEOR
+    | BITWISEXOR
+    | KW_RLIKE
+    | KW_REGEXP
+    | KW_IN
+    | KW_BETWEEN
+    ;
+
+descFuncNames
+    :
+      (sysFuncNames) => sysFuncNames
+    | StringLiteral
+    | functionIdentifier
+    ;
+
+//We are allowed to use From and To in CreateTableUsing command's options (actually seems
we can use any string as the option key). But we can't simply add them into nonReserved because
by doing that we mess other existing rules. So we create a looseIdentifier and looseNonReserved
here.
+looseIdentifier
+    :
+    Identifier
+    | looseNonReserved -> Identifier[$looseNonReserved.text]
+    // If it decides to support SQL11 reserved keywords, i.e., useSQL11ReservedKeywordsForIdentifier()=false,
+    // the sql11keywords in existing q tests will NOT be added back.
+    | {useSQL11ReservedKeywordsForIdentifier()}? sql11ReservedKeywordsUsedAsIdentifier ->
Identifier[$sql11ReservedKeywordsUsedAsIdentifier.text]
+    ;
+
+identifier
+    :
+    Identifier
+    | nonReserved -> Identifier[$nonReserved.text]
+    // If it decides to support SQL11 reserved keywords, i.e., useSQL11ReservedKeywordsForIdentifier()=false,
+    // the sql11keywords in existing q tests will NOT be added back.
+    | {useSQL11ReservedKeywordsForIdentifier()}? sql11ReservedKeywordsUsedAsIdentifier ->
Identifier[$sql11ReservedKeywordsUsedAsIdentifier.text]
+    ;
+
+functionIdentifier
+@init { gParent.pushMsg("function identifier", state); }
+@after { gParent.popMsg(state); }
+    :
+    identifier (DOT identifier)? -> identifier+
+    ;
+
+principalIdentifier
+@init { gParent.pushMsg("identifier for principal spec", state); }
+@after { gParent.popMsg(state); }
+    : identifier
+    | QuotedIdentifier
+    ;
+
+looseNonReserved
+    : nonReserved | KW_FROM | KW_TO
+    ;
+
+//The new version of nonReserved + sql11ReservedKeywordsUsedAsIdentifier = old version of
nonReserved
+//Non reserved keywords are basically the keywords that can be used as identifiers.
+//All the KW_* are automatically not only keywords, but also reserved keywords.
+//That means, they can NOT be used as identifiers.
+//If you would like to use them as identifiers, put them in the nonReserved list below.
+//If you are not sure, please refer to the SQL2011 column in
+//http://www.postgresql.org/docs/9.5/static/sql-keywords-appendix.html
+nonReserved
+    :
+    KW_ADD | KW_ADMIN | KW_AFTER | KW_ANALYZE | KW_ARCHIVE | KW_ASC | KW_BEFORE | KW_BUCKET
| KW_BUCKETS
+    | KW_CASCADE | KW_CHANGE | KW_CLUSTER | KW_CLUSTERED | KW_CLUSTERSTATUS | KW_COLLECTION
| KW_COLUMNS
+    | KW_COMMENT | KW_COMPACT | KW_COMPACTIONS | KW_COMPUTE | KW_CONCATENATE | KW_CONTINUE
| KW_DATA | KW_DAY
+    | KW_DATABASES | KW_DATETIME | KW_DBPROPERTIES | KW_DEFERRED | KW_DEFINED | KW_DELIMITED
| KW_DEPENDENCY
+    | KW_DESC | KW_DIRECTORIES | KW_DIRECTORY | KW_DISABLE | KW_DISTRIBUTE | KW_ELEM_TYPE
+    | KW_ENABLE | KW_ESCAPED | KW_EXCLUSIVE | KW_EXPLAIN | KW_EXPORT | KW_FIELDS | KW_FILE
| KW_FILEFORMAT
+    | KW_FIRST | KW_FORMAT | KW_FORMATTED | KW_FUNCTIONS | KW_HOLD_DDLTIME | KW_HOUR | KW_IDXPROPERTIES
| KW_IGNORE
+    | KW_INDEX | KW_INDEXES | KW_INPATH | KW_INPUTDRIVER | KW_INPUTFORMAT | KW_ITEMS | KW_JAR
+    | KW_KEYS | KW_KEY_TYPE | KW_LIMIT | KW_LINES | KW_LOAD | KW_LOCATION | KW_LOCK | KW_LOCKS
| KW_LOGICAL | KW_LONG
+    | KW_MAPJOIN | KW_MATERIALIZED | KW_METADATA | KW_MINUS | KW_MINUTE | KW_MONTH | KW_MSCK
| KW_NOSCAN | KW_NO_DROP | KW_OFFLINE
+    | KW_OPTION | KW_OUTPUTDRIVER | KW_OUTPUTFORMAT | KW_OVERWRITE | KW_OWNER | KW_PARTITIONED
| KW_PARTITIONS | KW_PLUS | KW_PRETTY
+    | KW_PRINCIPALS | KW_PROTECTION | KW_PURGE | KW_READ | KW_READONLY | KW_REBUILD | KW_RECORDREADER
| KW_RECORDWRITER
+    | KW_RELOAD | KW_RENAME | KW_REPAIR | KW_REPLACE | KW_REPLICATION | KW_RESTRICT | KW_REWRITE
+    | KW_ROLE | KW_ROLES | KW_SCHEMA | KW_SCHEMAS | KW_SECOND | KW_SEMI | KW_SERDE | KW_SERDEPROPERTIES
| KW_SERVER | KW_SETS | KW_SHARED
+    | KW_SHOW | KW_SHOW_DATABASE | KW_SKEWED | KW_SORT | KW_SORTED | KW_SSL | KW_STATISTICS
| KW_STORED
+    | KW_STREAMTABLE | KW_STRING | KW_STRUCT | KW_TABLES | KW_TBLPROPERTIES | KW_TEMPORARY
| KW_TERMINATED
+    | KW_TINYINT | KW_TOUCH | KW_TRANSACTIONS | KW_UNARCHIVE | KW_UNDO | KW_UNIONTYPE | KW_UNLOCK
| KW_UNSET
+    | KW_UNSIGNED | KW_URI | KW_USE | KW_UTC | KW_UTCTIMESTAMP | KW_VALUE_TYPE | KW_VIEW
| KW_WHILE | KW_YEAR
+    | KW_WORK
+    | KW_TRANSACTION
+    | KW_WRITE
+    | KW_ISOLATION
+    | KW_LEVEL
+    | KW_SNAPSHOT
+    | KW_AUTOCOMMIT
+    | KW_ANTI
+    | KW_WEEK | KW_MILLISECOND | KW_MICROSECOND
+    | KW_CLEAR | KW_LAZY | KW_CACHE | KW_UNCACHE | KW_DFS
+;
+
+//The following SQL2011 reserved keywords are used as cast function name only, but not as
identifiers.
+sql11ReservedKeywordsUsedAsCastFunctionName
+    :
+    KW_BIGINT | KW_BINARY | KW_BOOLEAN | KW_CURRENT_DATE | KW_CURRENT_TIMESTAMP | KW_DATE
| KW_DOUBLE | KW_FLOAT | KW_INT | KW_SMALLINT | KW_TIMESTAMP
+    ;
+
+//The following SQL2011 reserved keywords are used as identifiers in many q tests, they may
be added back due to backward compatibility.
+//We are planning to remove the following whole list after several releases.
+//Thus, please do not change the following list unless you know what to do.
+sql11ReservedKeywordsUsedAsIdentifier
+    :
+    KW_ALL | KW_ALTER | KW_ARRAY | KW_AS | KW_AUTHORIZATION | KW_BETWEEN | KW_BIGINT | KW_BINARY
| KW_BOOLEAN
+    | KW_BOTH | KW_BY | KW_CREATE | KW_CUBE | KW_CURRENT_DATE | KW_CURRENT_TIMESTAMP | KW_CURSOR
| KW_DATE | KW_DECIMAL | KW_DELETE | KW_DESCRIBE
+    | KW_DOUBLE | KW_DROP | KW_EXISTS | KW_EXTERNAL | KW_FALSE | KW_FETCH | KW_FLOAT | KW_FOR
| KW_FULL | KW_GRANT
+    | KW_GROUP | KW_GROUPING | KW_IMPORT | KW_IN | KW_INNER | KW_INSERT | KW_INT | KW_INTERSECT
| KW_INTO | KW_IS | KW_LATERAL
+    | KW_LEFT | KW_LIKE | KW_LOCAL | KW_NONE | KW_NULL | KW_OF | KW_ORDER | KW_OUT | KW_OUTER
| KW_PARTITION
+    | KW_PERCENT | KW_PROCEDURE | KW_RANGE | KW_READS | KW_REVOKE | KW_RIGHT
+    | KW_ROLLUP | KW_ROW | KW_ROWS | KW_SET | KW_SMALLINT | KW_TABLE | KW_TIMESTAMP | KW_TO
| KW_TRIGGER | KW_TRUE
+    | KW_TRUNCATE | KW_UNION | KW_UPDATE | KW_USER | KW_USING | KW_VALUES | KW_WITH
+//The following two keywords come from MySQL. Although they are not keywords in SQL2011,
they are reserved keywords in MySQL.
+    | KW_REGEXP | KW_RLIKE
+    ;

http://git-wip-us.apache.org/repos/asf/spark/blob/86c852cf/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
----------------------------------------------------------------------
diff --git a/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
index 9aeea69..3010d3a 100644
--- a/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
+++ b/sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
@@ -26,7 +26,7 @@ ASTLabelType=CommonTree;
 backtrack=false;
 k=3;
 }
-import SelectClauseParser, FromClauseParser, IdentifiersParser, ExpressionParser;
+import SelectClauseParser, FromClauseParser, IdentifiersParser, KeywordParser, ExpressionParser;
 
 tokens {
 TOK_INSERT;


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