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修正运算符优先级别处理不当的问题

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@160 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-05-20 16:05:38 +00:00
parent 2b19baff03
commit 431e080bdf
54 changed files with 1085 additions and 114 deletions
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src/main/java/com/alibaba/druid/sql/parser/SQLParser.java
+19 -9
View File
@@ -41,35 +41,45 @@ public class SQLParser {
}
}
protected final String as() throws ParserException {
String rtnValue = null;
protected String as() throws ParserException {
String alias = null;
if (lexer.token() == Token.AS) {
lexer.nextToken();
if (lexer.token() == Token.LITERAL_ALIAS) {
rtnValue = lexer.stringVal();
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
return rtnValue;
return alias;
}
if (lexer.token() == Token.IDENTIFIER) {
rtnValue = lexer.stringVal();
alias = lexer.stringVal();
lexer.nextToken();
return rtnValue;
return alias;
}
if (lexer.token() == Token.KEY) {
lexer.nextToken();
alias = "KEY";
return alias;
}
throw new ParserException("Error", 0, 0);
}
if (lexer.token() == Token.LITERAL_ALIAS) {
rtnValue = lexer.stringVal();
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
} else if (lexer.token() == Token.IDENTIFIER) {
rtnValue = lexer.stringVal();
alias = lexer.stringVal();
lexer.nextToken();
} else if (lexer.token() == Token.KEY) {
lexer.nextToken();
alias = "KEY";
return alias;
}
return rtnValue;
return alias;
}
public void accept(Token token) {