vvysotskyi commented on a change in pull request #1615: DRILL-6964: Implement
CREATE / DROP TABLE SCHEMA commands
URL: https://github.com/apache/drill/pull/1615#discussion_r249442059
##########
File path:
exec/java-exec/src/main/antlr4/org/apache/drill/exec/record/metadata/schema/parser/TableSchemaParser.g4
##########
@@ -0,0 +1,70 @@
+parser grammar TableSchemaParser;
+
+options {
+ language=Java;
+ tokenVocab=TableSchemaLexer;
+}
+
+@header {
+/*
+ * 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.
+ */
+}
+
+schema: (columns | LEFT_PAREN columns RIGHT_PAREN) EOF;
+
+columns: column (COMMA column)*;
+
+column: (primitive_column | map_column | simple_array_column |
complex_array_column);
+
+primitive_column: column_id simple_type nullability?;
+
+simple_array_column: column_id simple_array_type nullability?;
+
+map_column: column_id map_type nullability?;
+
+complex_array_column: column_id complex_array_type nullability?;
+
+column_id
+: ID # id
+| QUOTED_ID # quoted_id
+;
+
+simple_type
+: (INT | INTEGER) # int
+| BIGINT # bigint
+| FLOAT # float
+| DOUBLE # double
+| (DEC | DECIMAL | NUMERIC) (LEFT_PAREN NUMBER (COMMA NUMBER)? RIGHT_PAREN)? #
decimal
+| BOOLEAN # boolean
+| (CHAR | VARCHAR | CHARACTER VARYING?) (LEFT_PAREN NUMBER RIGHT_PAREN)? #
varchar
+| (BINARY | VARBINARY) (LEFT_PAREN NUMBER RIGHT_PAREN)? # binary
+| TIME # time
Review comment:
Time and timestamp also may have precision.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
