OracleSelectTest21.java

package com.alipay.zdal.test.ut.sqlparser.oracle;

import java.util.List;

import org.junit.Test;

import junit.framework.Assert;
import com.alipay.zdal.parser.sql.ast.SQLStatement;
import com.alipay.zdal.parser.sql.dialect.oracle.parser.OracleStatementParser;
import com.alipay.zdal.parser.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
import com.alipay.zdal.parser.sql.stat.TableStat;


public class OracleSelectTest21   {
@Test
    public void test_0() throws Exception {
        String sql = //
        "SELECT EVENT, WAITS, TIME, DECODE(WAITS, NULL, TO_NUMBER(NULL), 0, TO_NUMBER(NULL), TIME/WAITS*1000) AVGWT"
                + //
                "   , PCTWTT, WAIT_CLASS "
                + "FROM (SELECT EVENT, WAITS, TIME, PCTWTT, WAIT_CLASS "
                + //
                "       FROM ("
                + //
                "           SELECT E.EVENT_NAME EVENT, E.TOTAL_WAITS - NVL(B.TOTAL_WAITS,0) WAITS"
                + //
                "              , (E.TIME_WAITED_MICRO - NVL(B.TIME_WAITED_MICRO,0)) / 1000000 TIME"
                + //
                "              , 100 * (E.TIME_WAITED_MICRO - NVL(B.TIME_WAITED_MICRO,0)) / :B1 PCTWTT"
                + //
                "           , E.WAIT_CLASS WAIT_CLASS "
                + //
                "           FROM DBA_HIST_SYSTEM_EVENT B, DBA_HIST_SYSTEM_EVENT E "
                + //
                "           WHERE B.SNAP_ID(+) = :B5 AND E.SNAP_ID = :B4 AND B.DBID(+) = :B3 AND E.DBID = :B3 "
                + //
                "           AND B.INSTANCE_NUMBER(+) = :B2 AND E.INSTANCE_NUMBER = :B2 AND B.EVENT_ID(+) = E.EVENT_ID "
                + //
                "           AND E.TOTAL_WAITS > NVL(B.TOTAL_WAITS,0) AND E.WAIT_CLASS != 'Idle' "
                + //
                "          UNION ALL "
                + //
                "           SELECT 'CPU time' EVENT, TO_NUMBER(NULL) WAITS"
                + //
                "                   , :B6 /1000000 TIME, 100 * :B6 / :B1 PCTWTT, NULL WAIT_CLASS FROM DUAL WHERE :B6 > 0"
                + //
                ") ORDER BY TIME DESC, WAITS DESC) " + //
                "WHERE ROWNUM <= :B7 "; //

        OracleStatementParser parser = new OracleStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement statemen = statementList.get(0);
       

        Assert.assertEquals(1, statementList.size());

        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
        statemen.accept(visitor);

        System.out.println("Tables : " + visitor.getTables());
        System.out.println("fields : " + visitor.getColumns());
        System.out.println("alias : " + visitor.getAliasMap());
        System.out.println("conditions : " + visitor.getConditions());
        System.out.println("orderBy : " + visitor.getOrderByColumns());
        System.out.println("groupBy : " + visitor.getGroupByColumns());
        System.out.println("variant : " + visitor.getVariants());
        System.out.println("relationShip : " + visitor.getRelationships());

        Assert.assertEquals(1, visitor.getTables().size());

        Assert.assertTrue(visitor.getTables().containsKey(
            new TableStat.Name("DBA_HIST_SYSTEM_EVENT")));

        Assert.assertEquals(13, visitor.getColumns().size());

        // Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("pivot_table", "*")));
        // Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("pivot_table", "YEAR")));
        // Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("pivot_table", "order_mode")));
    }
}