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feat: support ref alias in select (#2101)
* support alias Signed-off-by: yisaer <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| // Copyright 2023 EMQ Technologies Co., Ltd. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package planner | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "reflect" | ||
| "strings" | ||
| "testing" | ||
|
|
||
| "github.com/gdexlab/go-render/render" | ||
|
|
||
| "github.com/lf-edge/ekuiper/internal/pkg/store" | ||
| "github.com/lf-edge/ekuiper/internal/xsql" | ||
| "github.com/lf-edge/ekuiper/pkg/api" | ||
| "github.com/lf-edge/ekuiper/pkg/ast" | ||
| ) | ||
|
|
||
| func TestPlannerAlias(t *testing.T) { | ||
| kv, err := store.GetKV("stream") | ||
| if err != nil { | ||
| t.Error(err) | ||
| return | ||
| } | ||
| streamSqls := map[string]string{ | ||
| "src1": `CREATE STREAM src1 ( | ||
| ) WITH (DATASOURCE="src1", FORMAT="json", KEY="ts");`, | ||
| "src2": `CREATE STREAM src2 ( | ||
| ) WITH (DATASOURCE="src2", FORMAT="json", KEY="ts");`, | ||
| "tableInPlanner": `CREATE TABLE tableInPlanner ( | ||
| id BIGINT, | ||
| name STRING, | ||
| value STRING, | ||
| hum BIGINT | ||
| ) WITH (TYPE="file");`, | ||
| } | ||
| types := map[string]ast.StreamType{ | ||
| "src1": ast.TypeStream, | ||
| "src2": ast.TypeStream, | ||
| "tableInPlanner": ast.TypeTable, | ||
| } | ||
| for name, sql := range streamSqls { | ||
| s, err := json.Marshal(&xsql.StreamInfo{ | ||
| StreamType: types[name], | ||
| Statement: sql, | ||
| }) | ||
| if err != nil { | ||
| t.Error(err) | ||
| t.Fail() | ||
| } | ||
| err = kv.Set(name, string(s)) | ||
| if err != nil { | ||
| t.Error(err) | ||
| t.Fail() | ||
| } | ||
| } | ||
| streams := make(map[string]*ast.StreamStmt) | ||
| for n := range streamSqls { | ||
| streamStmt, err := xsql.GetDataSource(kv, n) | ||
| if err != nil { | ||
| t.Errorf("fail to get stream %s, please check if stream is created", n) | ||
| return | ||
| } | ||
| streams[n] = streamStmt | ||
| } | ||
| aliasRef1 := &ast.AliasRef{ | ||
| Expression: &ast.BinaryExpr{ | ||
| OP: ast.ADD, | ||
| LHS: &ast.FieldRef{ | ||
| StreamName: "src1", | ||
| Name: "a", | ||
| }, | ||
| RHS: &ast.FieldRef{ | ||
| StreamName: "src1", | ||
| Name: "b", | ||
| }, | ||
| }, | ||
| } | ||
| aliasRef1.SetRefSource([]string{"src1"}) | ||
| aliasRef2 := &ast.AliasRef{ | ||
| Expression: &ast.BinaryExpr{ | ||
| OP: ast.ADD, | ||
| LHS: &ast.FieldRef{ | ||
| StreamName: ast.AliasStream, | ||
| Name: "sum", | ||
| AliasRef: aliasRef1, | ||
| }, | ||
| RHS: &ast.IntegerLiteral{ | ||
| Val: 1, | ||
| }, | ||
| }, | ||
| } | ||
| aliasRef2.SetRefSource([]string{"src1"}) | ||
|
|
||
| testcases := []struct { | ||
| sql string | ||
| p LogicalPlan | ||
| err string | ||
| }{ | ||
| { | ||
| sql: "select a + b as sum, sum + 1 as sum2 from src1", | ||
| p: ProjectPlan{ | ||
| baseLogicalPlan: baseLogicalPlan{ | ||
| children: []LogicalPlan{ | ||
| DataSourcePlan{ | ||
| baseLogicalPlan: baseLogicalPlan{}, | ||
| name: "src1", | ||
| streamFields: map[string]*ast.JsonStreamField{ | ||
| "a": nil, | ||
| "b": nil, | ||
| }, | ||
| streamStmt: streams["src1"], | ||
| pruneFields: []string{}, | ||
| isSchemaless: true, | ||
| metaFields: []string{}, | ||
| }.Init(), | ||
| }, | ||
| }, | ||
| fields: []ast.Field{ | ||
| { | ||
| AName: "sum", | ||
| Expr: &ast.FieldRef{ | ||
| StreamName: ast.AliasStream, | ||
| Name: "sum", | ||
| AliasRef: aliasRef1, | ||
| }, | ||
| }, | ||
| { | ||
| AName: "sum2", | ||
| Expr: &ast.FieldRef{ | ||
| StreamName: ast.AliasStream, | ||
| Name: "sum2", | ||
| AliasRef: aliasRef2, | ||
| }, | ||
| }, | ||
| }, | ||
| }.Init(), | ||
| }, | ||
| } | ||
| for i, tt := range testcases { | ||
| stmt, err := xsql.NewParser(strings.NewReader(tt.sql)).Parse() | ||
| if err != nil { | ||
| t.Errorf("%d. %q: error compile sql: %s\n", i, tt.sql, err) | ||
| continue | ||
| } | ||
| p, _ := createLogicalPlan(stmt, &api.RuleOption{ | ||
| IsEventTime: false, | ||
| LateTol: 0, | ||
| Concurrency: 0, | ||
| BufferLength: 0, | ||
| SendMetaToSink: false, | ||
| Qos: 0, | ||
| CheckpointInterval: 0, | ||
| SendError: true, | ||
| }, kv) | ||
| if !reflect.DeepEqual(tt.p, p) { | ||
| t.Errorf("%d. %q\n\nstmt mismatch:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.sql, render.AsCode(tt.p), render.AsCode(p)) | ||
| } | ||
| } | ||
| } |
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