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package teradata;
import gudusoft.gsqlparser.EDbVendor;
import gudusoft.gsqlparser.EExpressionType;
import gudusoft.gsqlparser.TGSqlParser;
import gudusoft.gsqlparser.nodes.TExpression;
import gudusoft.gsqlparser.nodes.TResultColumn;
import gudusoft.gsqlparser.stmt.TSelectSqlStatement;
import junit.framework.TestCase;
public class testCastDate extends TestCase {
public void test1(){
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvteradata);
sqlparser.sqltext = "select ydLLdNG_mTzTEMENT_dD\n" +
" ,Col1_DT (date) cust_Dt\n" +
" ,PRORzTE_dND\n" +
" FROM zxxountLevelxhzrgem\n" +
" WHERE ydLL_mTzTEMENT_xHzRGE_zMT > 0";
assertTrue(sqlparser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
TResultColumn resultColumn = select.getResultColumnList().getResultColumn(1);
assertTrue(resultColumn.getAliasClause().toString().equalsIgnoreCase("cust_Dt"));
assertTrue(resultColumn.getExpr().getExpressionType() == EExpressionType.simple_object_name_t);
assertTrue(resultColumn.getExpr().getObjectOperand().toString().equalsIgnoreCase("Col1_DT"));
}
public void test2(){
// mantisbt/view.php?id=1354
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvteradata);
sqlparser.sqltext = "select hire_date(DATE) \n" +
"from employee \n" +
"where hire_date(DATE) = DATE '1971-10-18' \n" +
"group by 1\n" +
"having hire_date(DATE) = DATE '1971-10-18' \n" +
"order by hire_date(DATE)";
assertTrue(sqlparser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
TResultColumn resultColumn = select.getResultColumnList().getResultColumn(0);
//System.out.println(resultColumn.getExpr().getExpressionType());
TExpression where = select.getWhereClause().getCondition().getLeftOperand();
//System.out.println(where.getExpressionType());
TExpression having = select.getGroupByClause().getHavingClause().getLeftOperand();
// System.out.println(having.getExpressionType());
TExpression order = select.getOrderbyClause().getItems().getOrderByItem(0).getSortKey();
//System.out.println(order.getExpressionType());
}
public void testDateAsColumn(){
TGSqlParser sqlparser = new TGSqlParser(EDbVendor.dbvteradata);
sqlparser.sqltext = "select \"date\" , col from emp";
assertTrue(sqlparser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement)sqlparser.sqlstatements.get(0);
TResultColumn resultColumn = select.getResultColumnList().getResultColumn(0);
System.out.println(resultColumn.getExpr().getExpressionType() );
// assertTrue(resultColumn.getExpr().getExpressionType() == EExpressionType.simple_object_name_t);
}
}