improved sql parser for postgresql

src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGInsertTest6_multi.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed 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.
+ */
+package com.alibaba.druid.bvt.sql.postgresql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+
+public class PGInsertTest6_multi extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "INSERT INTO products (product_no, name, price) VALUES"
+                + "\n    (1, 'Cheese', 9.99),"
+                + "\n    (2, 'Bread', 1.99),"
+                + "\n    (3, 'Milk', 2.99);";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement statemen = statementList.get(0);
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
+        statemen.accept(visitor);
+
+        System.out.println("Tables : " + visitor.getTables());
+        System.out.println("fields : " + visitor.getColumns());
+        System.out.println("coditions : " + visitor.getConditions());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("products")));
+
+        Assert.assertEquals(3, visitor.getColumns().size());
+
+        Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("products", "product_no")));
+        Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("products", "name")));
+        Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("products", "price")));
+    }
+
+}

src/test/java/com/alibaba/druid/bvt/sql/postgresql/datatypes/BitsTest.java

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+package com.alibaba.druid.bvt.sql.postgresql.datatypes;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.dialect.postgresql.ast.expr.PGTypeCastExpr;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGExprParser;
+
+public class BitsTest extends PGTest {
+
+    public void test_timestamp() throws Exception {
+        String sql = "44::bit(10)";
+        PGExprParser parser = new PGExprParser(sql);
+        PGTypeCastExpr expr = (PGTypeCastExpr) parser.expr();
+        System.out.println(expr.toString());
+    }
+
+}

src/test/java/com/alibaba/druid/bvt/sql/postgresql/expr/BoxTest.java

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+package com.alibaba.druid.bvt.sql.postgresql.expr;
+
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
+import com.alibaba.druid.sql.dialect.postgresql.ast.expr.PGBoxExpr;
+import com.alibaba.druid.sql.dialect.postgresql.ast.expr.PGPointExpr;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGExprParser;
+
+
+public class BoxTest extends PGTest {
+    public void test_timestamp() throws Exception {
+        String sql = "box '((0,0),(1,1))' + point '(2.0,0)'";
+        PGExprParser parser = new PGExprParser(sql);
+        SQLBinaryOpExpr binaryExpr = (SQLBinaryOpExpr) parser.expr();
+        
+        PGBoxExpr box = (PGBoxExpr) binaryExpr.getLeft();
+        PGPointExpr point = (PGPointExpr) binaryExpr.getRight();
+        Assert.assertEquals("BOX '((0,0),(1,1))' + POINT '(2.0,0)'", binaryExpr.toString());
+    }
+}

src/test/java/com/alibaba/druid/bvt/sql/postgresql/expr/ExtractTest_Year.java

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+package com.alibaba.druid.bvt.sql.postgresql.expr;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.dialect.postgresql.ast.expr.PGExtractExpr;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGExprParser;
+
+
+public class ExtractTest_Year extends PGTest {
+    public void test_timestamp() throws Exception {
+        String sql = "EXTRACT(YEAR FROM TIMESTAMP '2001-02-16 20:38:40')";
+        PGExprParser parser = new PGExprParser(sql);
+        PGExtractExpr expr = (PGExtractExpr) parser.expr();
+        System.out.println(expr.toString());
+    }
+}

src/test/java/com/alibaba/druid/bvt/sql/postgresql/expr/PolygonTest.java

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+package com.alibaba.druid.bvt.sql.postgresql.expr;
+
+
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.ast.expr.SQLUnaryExpr;
+import com.alibaba.druid.sql.ast.expr.SQLUnaryOperator;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGExprParser;
+
+
+public class PolygonTest extends PGTest {
+    public void test_timestamp() throws Exception {
+        String sql = "# '((1,0),(0,1),(-1,0))'";
+        PGExprParser parser = new PGExprParser(sql);
+        SQLUnaryExpr unaryExpr = (SQLUnaryExpr) parser.expr();
+        Assert.assertEquals(SQLUnaryOperator.Pound, unaryExpr.getOperator());
+
+    }
+}