improved mysql parser, support more create view syntax.

2023-03-04 19:17:16 +00:00 · 2017-02-11 19:20:39 +08:00
parent 427c16d955
commit 1f3c5467eb
5 changed files with 194 additions and 51 deletions
@@ -0,0 +1,110 @@
+/*
+ * Copyright 1999-2101 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.create;
+
+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.SQLCreateViewStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+import com.alibaba.druid.stat.TableStat.Column;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class MySqlCreateViewTest1 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "CREATE ALGORITHM=UNDEFINED DEFINER=root@localhost SQL SECURITY DEFINER VIEW view_audit_enroll AS " +
+                "SELECT a.enroll_id AS 'enrollId', case when ((SELECT audit FROM actvty_audit WHERE enroll_id = a.enroll_id AND rankjurisdiction = 1) > 0) then \"县站已审核\" else NULL end AS 'countyAudit', case when ((SELECT audit FROM actvty_audit WHERE enroll_id = a.enroll_id AND rankjurisdiction = 2) > 0) then \"市馆已审核\" else NULL end AS 'cityAudit', case when ((SELECT audit FROM actvty_audit WHERE enroll_id = a.enroll_id AND rankjurisdiction = 3) > 0) then \"省馆已审核\" else NULL end AS 'provinceAudit' FROM actvty_audit a GROUP BY a.enroll_id";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLCreateViewStatement stmt = (SQLCreateViewStatement) statementList.get(0);
+//        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        Assert.assertEquals("CREATE ALGORITHM = UNDEFINED\n" +
+                        "\tDEFINER = root\n" +
+                        "\tSQL SECURITY = DEFINER\n" +
+                        "\tVIEW view_audit_enroll\n" +
+                        "AS\n" +
+                        "SELECT a.enroll_id AS 'enrollId', CASE WHEN (\n" +
+                        "\t\tSELECT audit\n" +
+                        "\t\tFROM actvty_audit\n" +
+                        "\t\tWHERE enroll_id = a.enroll_id\n" +
+                        "\t\t\tAND rankjurisdiction = 1\n" +
+                        "\t\t) > 0 THEN '县站已审核' ELSE NULL END AS 'countyAudit', CASE WHEN (\n" +
+                        "\t\tSELECT audit\n" +
+                        "\t\tFROM actvty_audit\n" +
+                        "\t\tWHERE enroll_id = a.enroll_id\n" +
+                        "\t\t\tAND rankjurisdiction = 2\n" +
+                        "\t\t) > 0 THEN '市馆已审核' ELSE NULL END AS 'cityAudit', CASE WHEN (\n" +
+                        "\t\tSELECT audit\n" +
+                        "\t\tFROM actvty_audit\n" +
+                        "\t\tWHERE enroll_id = a.enroll_id\n" +
+                        "\t\t\tAND rankjurisdiction = 3\n" +
+                        "\t\t) > 0 THEN '省馆已审核' ELSE NULL END AS 'provinceAudit'\n" +
+                        "FROM actvty_audit a\n" +
+                        "GROUP BY a.enroll_id", //
+                SQLUtils.toMySqlString(stmt));
+
+        Assert.assertEquals("create algorithm = UNDEFINED\n" +
+                        "\tdefiner = root\n" +
+                        "\tsql security = DEFINER\n" +
+                        "\tview view_audit_enroll\n" +
+                        "as\n" +
+                        "select a.enroll_id as 'enrollId', case when (\n" +
+                        "\t\tselect audit\n" +
+                        "\t\tfrom actvty_audit\n" +
+                        "\t\twhere enroll_id = a.enroll_id\n" +
+                        "\t\t\tand rankjurisdiction = 1\n" +
+                        "\t\t) > 0 then '县站已审核' else null end as 'countyAudit', case when (\n" +
+                        "\t\tselect audit\n" +
+                        "\t\tfrom actvty_audit\n" +
+                        "\t\twhere enroll_id = a.enroll_id\n" +
+                        "\t\t\tand rankjurisdiction = 2\n" +
+                        "\t\t) > 0 then '市馆已审核' else null end as 'cityAudit', case when (\n" +
+                        "\t\tselect audit\n" +
+                        "\t\tfrom actvty_audit\n" +
+                        "\t\twhere enroll_id = a.enroll_id\n" +
+                        "\t\t\tand rankjurisdiction = 3\n" +
+                        "\t\t) > 0 then '省馆已审核' else null end as 'provinceAudit'\n" +
+                        "from actvty_audit a\n" +
+                        "group by a.enroll_id", //
+                SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+//        System.out.println("orderBy : " + visitor.getOrderByColumns());
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(3, visitor.getColumns().size());
+        Assert.assertEquals(2, visitor.getConditions().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("actvty_audit")));
+
+        Assert.assertTrue(visitor.getColumns().contains(new Column("actvty_audit", "audit")));
+        Assert.assertTrue(visitor.getColumns().contains(new Column("actvty_audit", "enroll_id")));
+    }
+}