本文整理匯總了Golang中github.com/pingcap/tidb/rset/rsets.Recordset.Plan方法的典型用法代碼示例。如果您正苦於以下問題：Golang Recordset.Plan方法的具體用法？Golang Recordset.Plan怎麽用？Golang Recordset.Plan使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/pingcap/tidb/rset/rsets.Recordset的用法示例。
在下文中一共展示了Recordset.Plan方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: TestJoin
func (s *testJoinSuit) TestJoin(c *C) {
s.cols = []*column.Col{
{
ColumnInfo: model.ColumnInfo{
ID: 0,
Name: model.NewCIStr("id"),
Offset: 0,
DefaultValue: 0,
FieldType: *types.NewFieldType(mysql.TypeLonglong),
},
},
{
ColumnInfo: model.ColumnInfo{
ID: 1,
Name: model.NewCIStr("name"),
Offset: 1,
DefaultValue: nil,
FieldType: *types.NewFieldType(mysql.TypeVarchar),
},
},
}
var testData1 = []*testRowData{
{1, []interface{}{10, "10"}},
{2, []interface{}{10, "20"}},
{3, []interface{}{10, "30"}},
{4, []interface{}{40, "40"}},
{6, []interface{}{60, "60"}},
}
var testData2 = []*testRowData{
{1, []interface{}{10, "10"}},
{2, []interface{}{10, "20"}},
{3, []interface{}{10, "30"}},
{4, []interface{}{40, "40"}},
{6, []interface{}{60, "60"}},
}
tblPlan1 := &testTablePlan{testData1, []string{"id", "name"}, 0}
tblPlan2 := &testTablePlan{testData2, []string{"id", "name"}, 0}
joinPlan := &plans.JoinPlan{
Left: tblPlan1,
Right: tblPlan2,
Type: "CROSS",
Fields: []*field.ResultField{},
On: expression.Value{Val: true},
}
rset := rsets.Recordset{
Plan: joinPlan,
Ctx: mock.NewContext()}
rset.Do(func(data []interface{}) (bool, error) {
return true, nil
})
tblPlan1.Close()
tblPlan2.Close()
rset.Plan = &plans.JoinPlan{
Left: tblPlan1,
Right: tblPlan2,
Type: "LEFT",
Fields: []*field.ResultField{},
On: expression.Value{Val: true},
}
rset.Do(func(data []interface{}) (bool, error) {
return true, nil
})
tblPlan1.Close()
tblPlan2.Close()
joinPlan = &plans.JoinPlan{
Left: tblPlan1,
Right: tblPlan2,
Type: "RIGHT",
Fields: []*field.ResultField{},
On: expression.Value{Val: true},
}
expr := &expression.BinaryOperation{
Op: opcode.LT,
L: &expression.Ident{
CIStr: model.NewCIStr("id"),
},
R: expression.Value{
Val: 100,
},
}
np, _, err := joinPlan.Filter(nil, expr)
c.Assert(np, NotNil)
c.Assert(err, IsNil)
rset.Plan = joinPlan
rset.Do(func(data []interface{}) (bool, error) {
return true, nil
})
tblPlan1.Close()
tblPlan2.Close()
rset.Plan = &plans.JoinPlan{
Left: tblPlan1,
Right: tblPlan2,
Type: "FULL",
Fields: []*field.ResultField{},
//.........這裏部分代碼省略.........
示例2: TestDefaultFieldsPlan
func (s *testFieldsSuit) TestDefaultFieldsPlan(c *C) {
tblPlan := &testTablePlan{selectFieldsTestData, []string{"id", "name"}, 0}
sl1 := &plans.SelectList{
Fields: []*field.Field{
{
Expr: &expression.Ident{
CIStr: model.NewCIStr("name"),
},
},
},
}
selFieldsPlan := &plans.SelectFieldsDefaultPlan{
SelectList: sl1,
Src: tblPlan,
}
rset := rsets.Recordset{
Plan: selFieldsPlan,
Ctx: mock.NewContext(),
}
rset.Do(func(data []interface{}) (bool, error) {
c.Assert(len(data), Equals, 1)
c.Assert(data[0].(string), Equals, "hello")
return true, nil
})
// test multiple fields
sl2 := &plans.SelectList{
Fields: []*field.Field{
{
Expr: &expression.Ident{
CIStr: model.NewCIStr("name"),
},
},
{
Expr: &expression.Ident{
CIStr: model.NewCIStr("id"),
},
},
},
}
tblPlan.Close()
rset.Plan = &plans.SelectFieldsDefaultPlan{
SelectList: sl2,
Src: tblPlan,
}
rset.Do(func(data []interface{}) (bool, error) {
c.Assert(len(data), Equals, 2)
c.Assert(data[0].(string), Equals, "hello")
c.Assert(data[1].(int), GreaterEqual, 10)
return true, nil
})
// test field doesn't exists
sl3 := &plans.SelectList{
Fields: []*field.Field{
{
Expr: &expression.Ident{
CIStr: model.NewCIStr("nosuchfield"),
},
},
},
}
tblPlan.Close()
rset.Plan = &plans.SelectFieldsDefaultPlan{
SelectList: sl3,
Src: tblPlan,
}
err := rset.Do(func(data []interface{}) (bool, error) {
return true, nil
})
c.Assert(err.Error() == "unknown field nosuchfield", Equals, true)
}