/** Tests that Hive dialect does not generate "AS". */
@Test
public void testHiveDialect() throws SqlParseException {
Planner planner = getPlanner();
SqlNode parse =
planner.parse(
"select * from (select * from \"emps\") as t\n" + "where \"name\" like '%e%'");
final SqlDialect hiveDialect = new SqlDialect(SqlDialect.DatabaseProduct.HIVE, "Hive", null);
assertThat(
parse.toSqlString(hiveDialect).getSql(),
equalTo("SELECT *\n" + "FROM (SELECT *\n" + "FROM emps) T\n" + "WHERE name LIKE '%e%'"));
}
@Test
public void testValidateFails() throws SqlParseException {
Planner planner = getPlanner();
SqlNode parse = planner.parse("select * from \"emps\" where \"Xname\" like '%e%'");
assertThat(
parse.toString(), equalTo("SELECT *\n" + "FROM `emps`\n" + "WHERE `Xname` LIKE '%e%'"));
try {
SqlNode validate = planner.validate(parse);
fail("expected error, got " + validate);
} catch (ValidationException e) {
assertThat(Util.getStackTrace(e), containsString("Column 'Xname' not found in any table"));
// ok
}
}
@Test
public void testParseAndConvert() throws Exception {
Planner planner = getPlanner();
SqlNode parse = planner.parse("select * from \"emps\" where \"name\" like '%e%'");
assertThat(
parse.toString(), equalTo("SELECT *\n" + "FROM `emps`\n" + "WHERE `name` LIKE '%e%'"));
SqlNode validate = planner.validate(parse);
RelNode rel = planner.convert(validate);
assertThat(
toString(rel),
equalTo(
"ProjectRel(empid=[$0], deptno=[$1], name=[$2], salary=[$3], commission=[$4])\n"
+ " FilterRel(condition=[LIKE($2, '%e%')])\n"
+ " EnumerableTableAccessRel(table=[[hr, emps]])\n"));
}
