manxihuanchi opened a new issue, #26346:
URL: https://github.com/apache/shardingsphere/issues/26346
## Bug Report
### Which version of ShardingSphere did you use?
shardingsphere-sql-parser-mysql 5.3.2
shardingsphere-sql-parser-sql92 5.3.2
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
shardingsphere-sql-parser-sql92 5.3.2
### Expected behavior
Can get COMMENT
### Actual behavior
Can get COMMENT
### Reason analyze (If you can)
package org.apache.shardingsphere.sql.parser.core;
/**
* Parse AST node.
*/
@RequiredArgsConstructor
public final class ParseASTNode implements ASTNode {
private final ParseTree parseTree;
private final CommonTokenStream tokenStream;
/**
* Get root node.
*
* @return root node
*/
public ParseTree getRootNode() {
return parseTree.getChild(0);
}
/**
* Get hidden tokens.
*
* @return hidden tokens
*/
public Collection<Token> getHiddenTokens() {
Collection<Token> result = new LinkedList<>();
for (Token each : tokenStream.getTokens()) {
if (Token.HIDDEN_CHANNEL == each.getChannel()) {
// each.getChannel() Always 0
result.add(each);
}
}
return result;
}
}
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule
configuration, when exception occur etc.
### Example codes for reproduce this issue (such as a github link).
String oneSql = " CREATE TABLE `t_device` (
`device_number` varchar(255) COMMENT '设备编号',
`name` varchar(255) COMMENT '设备名称',
`specifications_models` varchar(255) COMMENT '规格型号',
`manufacturing_date` datetime(0) COMMENT '制造日期',
`manufacturers` varchar(255) COMMENT '制造厂家',
`start_use_date` varchar(255) COMMENT '启用日期',
`installation_site` varchar(255) COMMENT '安装地点',
`brand` varchar(255) COMMENT '品牌',
`device_price` decimal(10, 2) COMMENT '设备价格',
`power` varchar(255) COMMENT '功率'
);";
String databaseType = "MYSQL";
CacheOption cacheOption = new CacheOption(128, 1024L);
SQLParserEngine parserEngine = new
SQLParserEngine(databaseType, cacheOption);
ParseASTNode parseASTNode = parserEngine.parse(oneSql, false);
SQLVisitorEngine visitorEngine = new SQLVisitorEngine(sqlType,
"STATEMENT", true, new Properties());
SQLStatement sqlStatement = visitorEngine.visit(parseASTNode);
TableSchema tableSchema = null;
if (sqlStatement instanceof CreateTableStatement) {
CreateTableStatement statement = (CreateTableStatement)
sqlStatement;
Collection<CommentSegment> commentSegments =
statement.getCommentSegments();
// commentSegments is null
}
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