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sessionctx, types, executor: support encoding and decoding user-defin…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // 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 sessionstates | ||
|
|
||
| import ( | ||
| ptypes "github.com/pingcap/tidb/parser/types" | ||
| "github.com/pingcap/tidb/types" | ||
| ) | ||
|
|
||
| // SessionStates contains all the states in the session that should be migrated when the session | ||
| // is migrated to another server. It is shown by `show session_states` and recovered by `set session_states`. | ||
| type SessionStates struct { | ||
| UserVars map[string]*types.Datum `json:"user-var-values,omitempty"` | ||
| UserVarTypes map[string]*ptypes.FieldType `json:"user-var-types,omitempty"` | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // 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 sessionstates_test | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
| "testing" | ||
|
|
||
| "github.com/pingcap/tidb/errno" | ||
| "github.com/pingcap/tidb/testkit" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestGrammar(t *testing.T) { | ||
| store, clean := testkit.CreateMockStore(t) | ||
| defer clean() | ||
| tk := testkit.NewTestKit(t, store) | ||
| rows := tk.MustQuery("show session_states").Rows() | ||
| require.Len(t, rows, 1) | ||
| tk.MustExec("set session_states '{}'") | ||
| tk.MustGetErrCode("set session_states 1", errno.ErrParse) | ||
| } | ||
|
|
||
| func TestUserVars(t *testing.T) { | ||
| store, clean := testkit.CreateMockStore(t) | ||
| defer clean() | ||
| tk := testkit.NewTestKit(t, store) | ||
| tk.MustExec("create table test.t1(" + | ||
| "j json, b blob, s varchar(255), st set('red', 'green', 'blue'), en enum('red', 'green', 'blue'))") | ||
| tk.MustExec("insert into test.t1 values('{\"color:\": \"red\"}', 'red', 'red', 'red,green', 'red')") | ||
|
|
||
| tests := []string{ | ||
| "", | ||
| "set @%s=null", | ||
| "set @%s=1", | ||
| "set @%s=1.0e10", | ||
| "set @%s=1.0-1", | ||
| "set @%s=now()", | ||
| "set @%s=1, @%s=1.0-1", | ||
| "select @%s:=1+1", | ||
| // TiDB doesn't support following features. | ||
| //"select j into @%s from test.t1", | ||
| //"select j,b,s,st,en into @%s,@%s,@%s,@%s,@%s from test.t1", | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| tk1 := testkit.NewTestKit(t, store) | ||
| tk2 := testkit.NewTestKit(t, store) | ||
| namesNum := strings.Count(tt, "%s") | ||
| names := make([]any, 0, namesNum) | ||
| for i := 0; i < namesNum; i++ { | ||
| names = append(names, fmt.Sprintf("a%d", i)) | ||
| } | ||
| var sql string | ||
| if len(tt) > 0 { | ||
| sql = fmt.Sprintf(tt, names...) | ||
| tk1.MustExec(sql) | ||
| } | ||
| showSessionStatesAndSet(t, tk1, tk2) | ||
| for _, name := range names { | ||
| sql := fmt.Sprintf("select @%s", name) | ||
| msg := fmt.Sprintf("sql: %s, var name: %s", sql, name) | ||
| value1 := tk1.MustQuery(sql).Rows()[0][0] | ||
| value2 := tk2.MustQuery(sql).Rows()[0][0] | ||
| require.Equal(t, value1, value2, msg) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func showSessionStatesAndSet(t *testing.T, tk1, tk2 *testkit.TestKit) { | ||
| rows := tk1.MustQuery("show session_states").Rows() | ||
| require.Len(t, rows, 1) | ||
| state := rows[0][0].(string) | ||
| state = strings.ReplaceAll(state, "\\", "\\\\") | ||
| state = strings.ReplaceAll(state, "'", "\\'") | ||
| setSQL := fmt.Sprintf("set session_states '%s'", state) | ||
| tk2.MustExec(setSQL) | ||
| } |
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