|
public static Select ( Action |
||
| select | Action |
|
| 리턴 | SelectStatement | |
public static void GroupByColumn()
{
var statement = SqlStatementBuilder.Select(select => select
.Query(query => query
.Column("name")
.Function("COUNT", new SqlExpression[] { SqlExpression.Reference(new ObjectName("*")) })
.FromTable("app.test")
.GroupBy(groupBy => groupBy.Reference("name"))
.Having(having => having.Reference("name").IsNot(not => not.Value(null)))));
Assert.IsNotNull(statement);
Assert.IsNotNull(statement.QueryExpression);
Assert.IsNotEmpty(statement.QueryExpression.SelectColumns);
Assert.AreEqual(2, statement.QueryExpression.SelectColumns.Count());
Assert.IsNotEmpty(statement.QueryExpression.FromClause.AllTables);
Assert.AreEqual(1, statement.QueryExpression.FromClause.AllTables.Count());
Assert.AreEqual("app.test", statement.QueryExpression.FromClause.AllTables.ElementAt(0).Name);
Assert.IsNotEmpty(statement.QueryExpression.GroupBy);
Assert.AreEqual(1, statement.QueryExpression.GroupBy.Count());
Assert.IsInstanceOf <SqlReferenceExpression>(statement.QueryExpression.GroupBy.ElementAt(0));
Assert.IsNotNull(statement.QueryExpression.HavingExpression);
Assert.IsInstanceOf <SqlBinaryExpression>(statement.QueryExpression.HavingExpression);
}
public static void SimpleSelect()
{
var statement = SqlStatementBuilder.Select(select => select
.Query(query => query.AllColumns()
.FromTable("app.test")));
Assert.IsNotNull(statement);
Assert.IsNotNull(statement.QueryExpression);
Assert.IsNotEmpty(statement.QueryExpression.SelectColumns);
Assert.AreEqual(1, statement.QueryExpression.SelectColumns.Count());
Assert.IsTrue(statement.QueryExpression.SelectColumns.ElementAt(0).IsAll);
Assert.IsNotEmpty(statement.QueryExpression.FromClause.AllTables);
Assert.AreEqual(1, statement.QueryExpression.FromClause.AllTables.Count());
Assert.AreEqual("app.test", statement.QueryExpression.FromClause.AllTables.ElementAt(0).Name);
}
public static void OrderByColumn()
{
var statement = SqlStatementBuilder.Select(select => select
.Query(query => query.AllColumns()
.FromTable("app.test"))
.OrderBy(orderBy => orderBy.Column("name").Descending()));
Assert.IsNotNull(statement);
Assert.IsNotNull(statement.QueryExpression);
Assert.IsNotEmpty(statement.QueryExpression.SelectColumns);
Assert.AreEqual(1, statement.QueryExpression.SelectColumns.Count());
Assert.IsTrue(statement.QueryExpression.SelectColumns.ElementAt(0).IsAll);
Assert.IsNotEmpty(statement.QueryExpression.FromClause.AllTables);
Assert.AreEqual(1, statement.QueryExpression.FromClause.AllTables.Count());
Assert.AreEqual("app.test", statement.QueryExpression.FromClause.AllTables.ElementAt(0).Name);
Assert.IsNotEmpty(statement.OrderBy);
Assert.AreEqual(1, statement.OrderBy.Count());
Assert.IsFalse(statement.OrderBy.ElementAt(0).Ascending);
}