support mysql group_concat

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_12.java

@@ -0,0 +1,70 @@
+/*
+ * 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.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.statement.SQLSelect;
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+
+public class MySqlSelectTest_12 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "SELECT COUNT(*) a FROM (select nickname,mobile,comment,createdate from ub_userdiscuss order by discuss_id desc) b  ";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
+
+        SQLSelect select = selectStmt.getSelect();
+        Assert.assertNotNull(select.getQuery());
+        MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
+        Assert.assertNull(queryBlock.getOrderBy());
+
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(5, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getConditions().size());
+        Assert.assertEquals(1, visitor.getOrderByColumns().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("ub_userdiscuss")));
+
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("SELECT COUNT(*) AS a" + //
+                            "\nFROM (SELECT nickname, mobile, comment, createdate" + //
+                            "\n\tFROM ub_userdiscuss" + //
+                            "\n\tORDER BY discuss_id DESC" + //
+                            "\n\t) b", //
+                            output);
+    }
+}

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_group_concat.java

@@ -0,0 +1,74 @@
+/*
+ * 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.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.statement.SQLSelect;
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+
+public class MySqlSelectTest_group_concat extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "SELECT GROUP_CONCAT(ext_customer_id Separator '.') " //
+                     + "from ad_texts " //
+                     + "where customer_id=13001 " //
+                     + "and description1 like '%爱丽%' " //
+                     + "order by id asc;";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
+
+        SQLSelect select = selectStmt.getSelect();
+        Assert.assertNotNull(select.getQuery());
+        MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
+        Assert.assertNotNull(queryBlock.getOrderBy());
+
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(4, visitor.getColumns().size());
+        Assert.assertEquals(2, visitor.getConditions().size());
+        Assert.assertEquals(1, visitor.getOrderByColumns().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("ad_texts")));
+
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("SELECT GROUP_CONCAT(ext_customer_id SEPARATOR '.')" //
+                            + "\nFROM ad_texts" //
+                            + "\nWHERE customer_id = 13001" //
+                            + "\n\tAND description1 LIKE '%爱丽%'" //
+                            + "\nORDER BY id ASC", //
+                            output);
+    }
+}

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_group_concat_2.java

@@ -0,0 +1,72 @@
+/*
+ * 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.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.statement.SQLSelect;
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+
+public class MySqlSelectTest_group_concat_2 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "SELECT student_name, " //
+                     + "GROUP_CONCAT(DISTINCT test_score " //
+                     + "    ORDER BY test_score DESC SEPARATOR ' ') " //
+                     + "FROM student " //
+                     + "GROUP BY student_name";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
+
+        SQLSelect select = selectStmt.getSelect();
+        Assert.assertNotNull(select.getQuery());
+        MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
+        Assert.assertNull(queryBlock.getOrderBy());
+
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(2, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getConditions().size());
+        Assert.assertEquals(0, visitor.getOrderByColumns().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("student")));
+
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("SELECT student_name, GROUP_CONCAT(DISTINCT test_score ORDER BY test_score DESC SEPARATOR ' ')" //
+                                    + "\nFROM student" //
+                                    + "\nGROUP BY student_name", //
+                            output);
+    }
+}