Alawn/Druid
1
0
Fork 0
mirror of https://github.com/alibaba/druid.git synced 2023-03-04 19:17:16 +00:00
Code Issues Releases Wiki Activity

improved mysql/oracle sql parser.

Browse Source
This commit is contained in:
wenshao
2017-05-20 22:03:21 +08:00
parent ae0ae2e9e0
commit ac4b6059f0
53 changed files with 1449 additions and 296 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/main/java/com/alibaba/druid/sql/parser/SQLSelectParser.java
+35 -1
View File
@@ -444,6 +444,10 @@ public class SQLSelectParser extends SQLParser {
tableReference.setExpr(expr());
}
protected SQLTableSource primaryTableSourceRest(SQLTableSource tableSource) {
return tableSource;
}
protected SQLTableSource parseTableSourceRest(SQLTableSource tableSource) {
if ((tableSource.getAlias() == null) || (tableSource.getAlias().length() == 0)) {
if (lexer.token() != Token.LEFT && lexer.token() != Token.RIGHT && lexer.token() != Token.FULL
@@ -520,7 +524,37 @@ public class SQLSelectParser extends SQLParser {
SQLJoinTableSource join = new SQLJoinTableSource();
join.setLeft(tableSource);
join.setJoinType(joinType);
join.setRight(parseTableSource());
SQLTableSource rightTableSource;
if (lexer.token() == Token.LPAREN) {
lexer.nextToken();
SQLSelect select = this.select();
rightTableSource = new SQLSubqueryTableSource(select);
accept(Token.RPAREN);
} else {
SQLExpr expr = this.expr();
rightTableSource = new SQLExprTableSource(expr);
}
if (identifierEquals("USING")) {
lexer.nextToken();
if (lexer.token() == Token.LPAREN) {
lexer.nextToken();
this.exprParser.exprList(join.getUsing(), join);
accept(Token.RPAREN);
} else {
join.getUsing().add(this.expr());
}
join.setAlias(this.tableAlias());
} else {
rightTableSource.setAlias(this.tableAlias());
primaryTableSourceRest(rightTableSource);
}
join.setRight(rightTableSource);
if (!natural) {
if (JdbcConstants.MYSQL.equals(dbType) && "NATURAL".equalsIgnoreCase(tableSource.getAlias())) {