public void GroupBy()
{
var item = new TestLinqToSql {
name = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSql>().AppendData(item).ExecuteAffrows();
var t1 = (from a in g.sqlite.Select <TestLinqToSql>()
where a.id == item.id
group a by new { a.id, a.name } into g
select new
{
g.Key.id,
g.Key.name,
cou = g.Count(),
avg = g.Avg(g.Value.click),
sum = g.Sum(g.Value.click),
max = g.Max(g.Value.click),
min = g.Min(g.Value.click)
}).ToList();
Assert.True(t1.Any());
Assert.Equal(item.id, t1.First().id);
}
public void Select()
{
var item = new TestLinqToSql {
name = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSql>().AppendData(item).ExecuteAffrows();
var t1 = (from a in g.sqlite.Select <TestLinqToSql>()
where a.id == item.id
select new { a.id }).ToList();
Assert.True(t1.Any());
Assert.Equal(item.id, t1[0].id);
}
public void From()
{
var item = new TestLinqToSql {
name = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSql>().AppendData(item).ExecuteAffrows();
var comment = new TestLinqToSqlComment {
TestLinqToSqlId = item.id, text = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSqlComment>().AppendData(comment).ExecuteAffrows();
var t1 = (from a in g.sqlite.Select <TestLinqToSql>()
from b in g.sqlite.Select <TestLinqToSqlComment>()
where a.id == b.TestLinqToSqlId
select a).ToList();
Assert.True(t1.Any());
//Assert.Equal(item.id, t1[0].id);
var t2 = (from a in g.sqlite.Select <TestLinqToSql>()
from b in g.sqlite.Select <TestLinqToSqlComment>()
where a.id == b.TestLinqToSqlId
select new { a.id, bid = b.id }).ToList();
Assert.True(t2.Any());
//Assert.Equal(item.id, t2[0].id);
//Assert.Equal(comment.id, t2[0].bid);
var t3 = (from a in g.sqlite.Select <TestLinqToSql>()
from b in g.sqlite.Select <TestLinqToSqlComment>()
where a.id == b.TestLinqToSqlId
where a.id == item.id
select new { a.id, bid = b.id }).ToList();
Assert.True(t3.Any());
Assert.Equal(item.id, t3[0].id);
Assert.Equal(comment.id, t3[0].bid);
}
public void LeftJoin()
{
var item = new TestLinqToSql {
name = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSql>().AppendData(item).ExecuteAffrows();
var comment = new TestLinqToSqlComment {
TestLinqToSqlId = item.id, text = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSqlComment>().AppendData(comment).ExecuteAffrows();
var t1 = (from a in g.sqlite.Select <TestLinqToSql>()
join b in g.sqlite.Select <TestLinqToSqlComment>() on a.id equals b.TestLinqToSqlId into temp
from tc in temp.DefaultIfEmpty()
select a).ToList();
Assert.True(t1.Any());
//Assert.Equal(item.id, t1[0].id);
var t2 = (from a in g.sqlite.Select <TestLinqToSql>()
join b in g.sqlite.Select <TestLinqToSqlComment>() on a.id equals b.TestLinqToSqlId into temp
from tc in temp.DefaultIfEmpty()
select new { a.id, bid = tc.id }).ToList();
Assert.True(t2.Any());
//Assert.Equal(item.id, t2[0].id);
//Assert.Equal(comment.id, t2[0].bid);
var t3 = (from a in g.sqlite.Select <TestLinqToSql>()
join b in g.sqlite.Select <TestLinqToSqlComment>() on a.id equals b.TestLinqToSqlId into temp
from tc in temp.DefaultIfEmpty()
where a.id == item.id
select new { a.id, bid = tc.id }).ToList();
Assert.True(t3.Any());
Assert.Equal(item.id, t3[0].id);
Assert.Equal(comment.id, t3[0].bid);
}
public void CaseWhen()
{
var item = new TestLinqToSql {
name = Guid.NewGuid().ToString()
};
g.sqlite.Insert <TestLinqToSql>().AppendData(item).ExecuteAffrows();
var t1 = (from a in g.sqlite.Select <TestLinqToSql>()
where a.id == item.id
select new {
a.id,
a.name,
testsub = new {
time = a.click > 10 ? "大于" : "小于或等于"
}
}).ToList();
Assert.True(t1.Any());
Assert.Equal(item.id, t1[0].id);
Assert.Equal("小于或等于", t1[0].testsub.time);
}