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Copy pathtestJoins.java
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64 lines (55 loc) · 2.77 KB
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package teradata;
import gudusoft.gsqlparser.EDbVendor;
import gudusoft.gsqlparser.EJoinType;
import gudusoft.gsqlparser.TGSqlParser;
import gudusoft.gsqlparser.nodes.TJoin;
import gudusoft.gsqlparser.nodes.TJoinItem;
import gudusoft.gsqlparser.nodes.TJoinList;
import gudusoft.gsqlparser.stmt.TSelectSqlStatement;
import junit.framework.TestCase;
public class testJoins extends TestCase {
public void test1(){
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvteradata);
sqlparser.sqltext = "select *\n" +
"from\n" +
" table1 as t1\n" +
" cross join table2 as t2\n" +
" inner join ttt as s1 on t1.col1 = t2.col2\n" +
" ;";
assertTrue(sqlparser.parse() == 0);
TSelectSqlStatement selectSqlStatement = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
TJoinList joins = selectSqlStatement.joins;
assertTrue(joins.size() == 1);
TJoin join = joins.getJoin(0);
assertTrue(join.getTable().toString().equalsIgnoreCase("table1"));
assertTrue(join.getJoinItems().size() == 2);
TJoinItem joinItem0 = join.getJoinItems().getJoinItem(0);
TJoinItem joinItem1 = join.getJoinItems().getJoinItem(1);
assertTrue(joinItem0.getTable().toString().equalsIgnoreCase("table2"));
assertTrue(joinItem0.getJoinType() == EJoinType.cross);
assertTrue(joinItem1.getTable().toString().equalsIgnoreCase("ttt"));
assertTrue(joinItem1.getJoinType() == EJoinType.inner);
}
public void test2(){
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvteradata);
sqlparser.sqltext = "select *\n" +
"from\n" +
" table1 as t1\n" +
" cross join table2 as t2\n" +
" left join ttt as s1 on t1.col1 = t2.col2\n" +
" ;";
assertTrue(sqlparser.parse() == 0);
TSelectSqlStatement selectSqlStatement = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
TJoinList joins = selectSqlStatement.joins;
assertTrue(joins.size() == 1);
TJoin join = joins.getJoin(0);
assertTrue(join.getTable().toString().equalsIgnoreCase("table1"));
assertTrue(join.getJoinItems().size() == 2);
TJoinItem joinItem0 = join.getJoinItems().getJoinItem(0);
TJoinItem joinItem1 = join.getJoinItems().getJoinItem(1);
assertTrue(joinItem0.getTable().toString().equalsIgnoreCase("table2"));
assertTrue(joinItem0.getJoinType() == EJoinType.cross);
assertTrue(joinItem1.getTable().toString().equalsIgnoreCase("ttt"));
assertTrue(joinItem1.getJoinType() == EJoinType.left);
}
}