package com.alibaba.druid.bvt.sql.schemaStat;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.parser.SQLParserUtils;
import com.alibaba.druid.sql.parser.SQLStatementParser;
import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
import com.alibaba.druid.stat.TableStat;
import com.alibaba.druid.util.JdbcConstants;
import junit.framework.TestCase;
import org.junit.Assert;
import java.util.Set;
public class SchemaStatTest13 extends TestCase {
public void test_schemaStat() throws Exception {
String sql = "select a.id, b.name from (select t1.* from table1 t1 left join table3 t3 on cast(t1.id as bigint) = t3.id) a inner join table2 b on a.id = b.id";
String dbType = JdbcConstants.ORACLE;
SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
SQLStatement stmt = parser.parseStatementList().get(0);
SchemaStatVisitor statVisitor = SQLUtils.createSchemaStatVisitor(dbType);
stmt.accept(statVisitor);
Set<TableStat.Relationship> relationships = statVisitor.getRelationships();
for (TableStat.Relationship relationship : relationships) {
System.out.println(relationship); // table1.id = table2.id
}
// System.out.println(statVisitor.getColumns());
// System.out.println(statVisitor.getGroupByColumns()); // group by
System.out.println("relationships : " + statVisitor.getRelationships()); // group by
System.out.println(statVisitor.getConditions());
assertEquals(2, relationships.size());
Assert.assertEquals(5, statVisitor.getColumns().size());
Assert.assertEquals(3, statVisitor.getConditions().size());
assertEquals(0, statVisitor.getFunctions().size());
}
}