improve postgresql support

2023-03-04 19:17:16 +00:00 · 2015-06-02 04:31:06 +08:00
parent c089393f71
commit 58fe296645
4 changed files with 115 additions and 3 deletions
@@ -0,0 +1,83 @@
+/*
+ * 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;
+
+public class PGSelectTest22 extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "SELECT i.relname, d.indisunique, a.attname"
+                + "          FROM pg_class t, pg_class i, pg_index d, pg_attribute "
+                + "         WHERE i.relkind = 'i'"
+                + "           AND d.indexrelid = i.oid"
+                + "           AND d.indisprimary = 'f'"
+                + "           AND t.oid = d.indrelid"
+                + "           AND t.relname = 'schema_migrations'"
+                + "           AND a.attrelid = t.oid"
+                + "           AND ( d.indkey[0]=a.attnum OR d.indkey[1]=a.attnum"
+                + "              OR d.indkey[2]=a.attnum OR d.indkey[3]=a.attnum"
+                + "              OR d.indkey[4]=a.attnum OR d.indkey[5]=a.attnum"
+                + "              OR d.indkey[6]=a.attnum OR d.indkey[7]=a.attnum"
+                + "              OR d.indkey[8]=a.attnum OR d.indkey[9]=a.attnum )"
+                + "        ORDER BY i.relname"
+                + "";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement statemen = statementList.get(0);
+        print(statementList);
+
+        Assert.assertEquals("SELECT i.relname, d.indisunique, a.attname"
+                + "\nFROM pg_class t, pg_class i, pg_index d, pg_attribute"
+                + "\nWHERE i.relkind = 'i'"
+                + "\n\tAND d.indexrelid = i.oid"
+                + "\n\tAND d.indisprimary = 'f'"
+                + "\n\tAND t.oid = d.indrelid"
+                + "\n\tAND t.relname = 'schema_migrations'"
+                + "\n\tAND a.attrelid = t.oid"
+                + "\n\tAND (d.indkey[0] = a.attnum"
+                + "\n\t\tOR d.indkey[1] = a.attnum"
+                + "\n\t\tOR d.indkey[2] = a.attnum"
+                + "\n\t\tOR d.indkey[3] = a.attnum"
+                + "\n\t\tOR d.indkey[4] = a.attnum"
+                + "\n\t\tOR d.indkey[5] = a.attnum"
+                + "\n\t\tOR d.indkey[6] = a.attnum"
+                + "\n\t\tOR d.indkey[7] = a.attnum"
+                + "\n\t\tOR d.indkey[8] = a.attnum"
+                + "\n\t\tOR d.indkey[9] = a.attnum)"
+                + "\nORDER BY i.relname", output(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.assertEquals(11, visitor.getColumns().size());
+        Assert.assertEquals(3, visitor.getTables().size());
+    }
+}