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Code Issues Releases Wiki Activity

sql parser direct support OVER

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This commit is contained in:
wenshao
2012-11-21 23:37:18 +08:00
parent 04321df02c
commit 96c1950a8d
19 changed files with 270 additions and 233 deletions
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src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+31
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@@ -27,6 +27,7 @@ import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.ast.SQLOrderBy;
import com.alibaba.druid.sql.ast.SQLOrderingSpecification;
import com.alibaba.druid.sql.ast.SQLOver;
import com.alibaba.druid.sql.ast.expr.SQLAggregateExpr;
import com.alibaba.druid.sql.ast.expr.SQLAllColumnExpr;
import com.alibaba.druid.sql.ast.expr.SQLAllExpr;
@@ -696,6 +697,36 @@ public class SQLExprParser extends SQLParser {
exprList(aggregateExpr.getArguments());
accept(Token.RPAREN);
if (lexer.token() == Token.OVER) {
lexer.nextToken();
SQLOver over = new SQLOver();
accept(Token.LPAREN);
if (identifierEquals("PARTITION")) {
lexer.nextToken();
accept(Token.BY);
if (lexer.token() == (Token.LPAREN)) {
lexer.nextToken();
exprList(over.getPartitionBy());
accept(Token.RPAREN);
} else {
exprList(over.getPartitionBy());
}
}
over.setOrderBy(parseOrderBy());
// if (over.getOrderBy() != null) {
// //TODO window
// }
accept(Token.RPAREN);
aggregateExpr.setOver(over);
}
return aggregateExpr;
}