diff --git a/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md b/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
index ef386d006..b27cc3551 100644
--- a/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
+++ b/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
@@ -119,13 +119,13 @@ For more details, see document [Operate-Metadata](../Basic-Concept/Operate-Metad
 
 **Example 1:** Create a template containing two non-aligned timeseires
 
-```shell
+```sql
 IoTDB> create device template t1 (temperature FLOAT, status BOOLEAN)
 ```
 
 **Example 2:** Create a template containing a group of aligned timeseires
 
-```shell
+```sql
 IoTDB> create device template t2 aligned (lat FLOAT, lon FLOAT)
 ```
 
@@ -465,7 +465,7 @@ For more details, see document [Data Import](../Tools-System/Data-Import-Tool_ap
 
 #### Load with Script
 
-```
+```sql
 ./load-rewrite.bat -f D:\IoTDB\data -h 192.168.0.101 -p 6667 -u root -pw root
 ```
 
@@ -902,11 +902,11 @@ IoTDB > select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1,
 
 ## 8. Maintennance
 Generate the corresponding query plan:
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 Execute the corresponding SQL, analyze the execution and output:
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ``` 
 ## 9. OPERATOR
@@ -1703,13 +1703,13 @@ eg: REVOKE ALL ON ROOT.** FROM USER user1;
 
 #### Delete Time Partition (experimental)
 
-```
+```sql
 Eg: IoTDB > DELETE PARTITION root.ln 0,1,2
 ```
 
 #### Continuous Query,CQ
 
-```
+```sql
 Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END
 ```
 
@@ -1717,13 +1717,13 @@ Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO
 
 - FLUSH
 
-```
+```sql
 Eg: IoTDB > flush
 ```
 
 - MERGE
 
-```
+```sql
 Eg: IoTDB > MERGE
 Eg: IoTDB > FULL MERGE
 ```
@@ -1748,12 +1748,12 @@ Eg: IoTDB > STOP REPAIR DATA
 
 - SET SYSTEM TO READONLY / WRITABLE
 
-```
+```sql
 Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE
 ```
 
 - Query abort
 
-```
+```sql
 Eg: IoTDB > KILL QUERY 1
 ```
\ No newline at end of file
diff --git a/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md b/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
index 17065d4ef..07363f7c6 100644
--- a/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
+++ b/src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
@@ -386,7 +386,7 @@ For more details, see document [Data Import](../Tools-System/Data-Import-Tool_ti
 
 #### Load with Script
 
-```
+```sql
 ./load-rewrite.bat -f D:\IoTDB\data -h 192.168.0.101 -p 6667 -u root -pw root
 ```
 
@@ -823,11 +823,11 @@ IoTDB > select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1,
 
 ## 7. Maintennance
 Generate the corresponding query plan:
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 Execute the corresponding SQL, analyze the execution and output:
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ``` 
 ## 8. OPERATOR
@@ -1624,13 +1624,13 @@ eg: REVOKE ALL ON ROOT.** FROM USER user1;
 
 #### Delete Time Partition (experimental)
 
-```
+```sql
 Eg: IoTDB > DELETE PARTITION root.ln 0,1,2
 ```
 
 #### Continuous Query,CQ
 
-```
+```sql
 Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END
 ```
 
@@ -1638,13 +1638,13 @@ Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO
 
 - FLUSH
 
-```
+```sql
 Eg: IoTDB > flush
 ```
 
 - MERGE
 
-```
+```sql
 Eg: IoTDB > MERGE
 Eg: IoTDB > FULL MERGE
 ```
@@ -1669,12 +1669,12 @@ Eg: IoTDB > STOP REPAIR DATA
 
 - SET SYSTEM TO READONLY / WRITABLE
 
-```
+```sql
 Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE
 ```
 
 - Query abort
 
-```
+```sql
 Eg: IoTDB > KILL QUERY 1
 ```
\ No newline at end of file
diff --git a/src/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md b/src/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
index ef386d006..b27cc3551 100644
--- a/src/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
+++ b/src/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
@@ -119,13 +119,13 @@ For more details, see document [Operate-Metadata](../Basic-Concept/Operate-Metad
 
 **Example 1:** Create a template containing two non-aligned timeseires
 
-```shell
+```sql
 IoTDB> create device template t1 (temperature FLOAT, status BOOLEAN)
 ```
 
 **Example 2:** Create a template containing a group of aligned timeseires
 
-```shell
+```sql
 IoTDB> create device template t2 aligned (lat FLOAT, lon FLOAT)
 ```
 
@@ -465,7 +465,7 @@ For more details, see document [Data Import](../Tools-System/Data-Import-Tool_ap
 
 #### Load with Script
 
-```
+```sql
 ./load-rewrite.bat -f D:\IoTDB\data -h 192.168.0.101 -p 6667 -u root -pw root
 ```
 
@@ -902,11 +902,11 @@ IoTDB > select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1,
 
 ## 8. Maintennance
 Generate the corresponding query plan:
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 Execute the corresponding SQL, analyze the execution and output:
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ``` 
 ## 9. OPERATOR
@@ -1703,13 +1703,13 @@ eg: REVOKE ALL ON ROOT.** FROM USER user1;
 
 #### Delete Time Partition (experimental)
 
-```
+```sql
 Eg: IoTDB > DELETE PARTITION root.ln 0,1,2
 ```
 
 #### Continuous Query,CQ
 
-```
+```sql
 Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END
 ```
 
@@ -1717,13 +1717,13 @@ Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO
 
 - FLUSH
 
-```
+```sql
 Eg: IoTDB > flush
 ```
 
 - MERGE
 
-```
+```sql
 Eg: IoTDB > MERGE
 Eg: IoTDB > FULL MERGE
 ```
@@ -1748,12 +1748,12 @@ Eg: IoTDB > STOP REPAIR DATA
 
 - SET SYSTEM TO READONLY / WRITABLE
 
-```
+```sql
 Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE
 ```
 
 - Query abort
 
-```
+```sql
 Eg: IoTDB > KILL QUERY 1
 ```
\ No newline at end of file
diff --git a/src/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md b/src/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
index 17065d4ef..07363f7c6 100644
--- a/src/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
+++ b/src/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
@@ -386,7 +386,7 @@ For more details, see document [Data Import](../Tools-System/Data-Import-Tool_ti
 
 #### Load with Script
 
-```
+```sql
 ./load-rewrite.bat -f D:\IoTDB\data -h 192.168.0.101 -p 6667 -u root -pw root
 ```
 
@@ -823,11 +823,11 @@ IoTDB > select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1,
 
 ## 7. Maintennance
 Generate the corresponding query plan:
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 Execute the corresponding SQL, analyze the execution and output:
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ``` 
 ## 8. OPERATOR
@@ -1624,13 +1624,13 @@ eg: REVOKE ALL ON ROOT.** FROM USER user1;
 
 #### Delete Time Partition (experimental)
 
-```
+```sql
 Eg: IoTDB > DELETE PARTITION root.ln 0,1,2
 ```
 
 #### Continuous Query,CQ
 
-```
+```sql
 Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END
 ```
 
@@ -1638,13 +1638,13 @@ Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO
 
 - FLUSH
 
-```
+```sql
 Eg: IoTDB > flush
 ```
 
 - MERGE
 
-```
+```sql
 Eg: IoTDB > MERGE
 Eg: IoTDB > FULL MERGE
 ```
@@ -1669,12 +1669,12 @@ Eg: IoTDB > STOP REPAIR DATA
 
 - SET SYSTEM TO READONLY / WRITABLE
 
-```
+```sql
 Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE
 ```
 
 - Query abort
 
-```
+```sql
 Eg: IoTDB > KILL QUERY 1
 ```
\ No newline at end of file
diff --git a/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md b/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
index e4260e8ae..a84b8ae08 100644
--- a/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
+++ b/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_apache.md
@@ -261,7 +261,7 @@ IoTDB> count devices where time>=2017-01-01T00:00:00 and time<=2017-11-01T16:26:
 
 #### 创建设备模板
 
-```Go
+```sql
 CREATE DEVICE TEMPLATE <templateName> ALIGNED? '(' <measurementId> <attributeClauses> [',' <measurementId> <attributeClauses>]+ ')'
 ```
 
@@ -579,7 +579,7 @@ GROUP BY([10, 90), 10ms);
 
 SQL 语法：
 
-```Go
+```sql
 select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?]
 ```
 
@@ -949,7 +949,7 @@ IoTDB> select s1 + s2 into root.expr.add(d1s1_d1s2), root.expr.add(d2s1_d2s2) fr
 ##### 按时间对齐（默认）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2
 
@@ -959,7 +959,7 @@ from root.sg.d1, root.sg.d2;
 ```
 
 该语句等价于：
-```
+```sql
 
 select s1, s2
 
@@ -970,7 +970,7 @@ from root.sg.d1, root.sg.d2;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
 
-```
+```sql
 select d1.s1, d1.s2, d2.s3, d3.s4 
 
 into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)
@@ -980,14 +980,14 @@ from root.sg;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
 
-```
+```sql
 select * into root.sg_bk.::(::) from root.sg.**;
 ```
 
 ##### 按设备对齐（使用 `ALIGN BY DEVICE`）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2, s3, s4
 
@@ -999,7 +999,7 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
-```
+```sql
 
 select avg(s1), sum(s2) + sum(s3), count(s4)
 
@@ -1011,23 +1011,23 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select * into ::(backup_${4}) from root.sg.** align by device;
 ```
 
 #### 指定目标序列为对齐序列
-```
+```sql
 
 select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;
 ```
 ## 5. 运维语句
 生成对应的查询计划
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 执行对应的查询语句，并获取分析结果
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ```
 ## 6. 运算符
@@ -1612,7 +1612,7 @@ SHOW TRIGGERS
 
 ### 12.1 语法
 
-```Go
+```sql
 CREATE (CONTINUOUS QUERY | CQ) <cq_id> 
 [RESAMPLE 
   [EVERY <every_interval>] 
@@ -1656,7 +1656,7 @@ END
 \> SELECT temperature_max from root.ln.*.*;
 ```
 #### 配置连续查询的时间窗口大小
-```
+```sql
 CREATE CONTINUOUS QUERY cq2
 
 RESAMPLE RANGE 40s
diff --git a/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md b/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
index 310ac056a..55083e822 100644
--- a/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
+++ b/src/zh/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md
@@ -504,7 +504,7 @@ GROUP BY([10, 90), 10ms);
 
 SQL 语法：
 
-```Go
+```sql
 select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?]
 ```
 
@@ -874,7 +874,7 @@ IoTDB> select s1 + s2 into root.expr.add(d1s1_d1s2), root.expr.add(d2s1_d2s2) fr
 ##### 按时间对齐（默认）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2
 
@@ -884,7 +884,7 @@ from root.sg.d1, root.sg.d2;
 ```
 
 该语句等价于：
-```
+```sql
 
 select s1, s2
 
@@ -895,7 +895,7 @@ from root.sg.d1, root.sg.d2;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
 
-```
+```sql
 select d1.s1, d1.s2, d2.s3, d3.s4 
 
 into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)
@@ -905,14 +905,14 @@ from root.sg;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
 
-```
+```sql
 select * into root.sg_bk.::(::) from root.sg.**;
 ```
 
 ##### 按设备对齐（使用 `ALIGN BY DEVICE`）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2, s3, s4
 
@@ -924,7 +924,7 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
-```
+```sql
 
 select avg(s1), sum(s2) + sum(s3), count(s4)
 
@@ -936,23 +936,23 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select * into ::(backup_${4}) from root.sg.** align by device;
 ```
 
 #### 指定目标序列为对齐序列
-```
+```sql
 
 select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;
 ```
 ## 5. 运维语句
 生成对应的查询计划
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 执行对应的查询语句，并获取分析结果
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ```
 ## 6. 运算符
@@ -1537,7 +1537,7 @@ SHOW TRIGGERS
 
 ### 12.1 语法
 
-```Go
+```sql
 CREATE (CONTINUOUS QUERY | CQ) <cq_id> 
 [RESAMPLE 
   [EVERY <every_interval>] 
@@ -1581,7 +1581,7 @@ END
 \> SELECT temperature_max from root.ln.*.*;
 ```
 #### 配置连续查询的时间窗口大小
-```
+```sql
 CREATE CONTINUOUS QUERY cq2
 
 RESAMPLE RANGE 40s
diff --git a/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md b/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
index e4260e8ae..a84b8ae08 100644
--- a/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
+++ b/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md
@@ -261,7 +261,7 @@ IoTDB> count devices where time>=2017-01-01T00:00:00 and time<=2017-11-01T16:26:
 
 #### 创建设备模板
 
-```Go
+```sql
 CREATE DEVICE TEMPLATE <templateName> ALIGNED? '(' <measurementId> <attributeClauses> [',' <measurementId> <attributeClauses>]+ ')'
 ```
 
@@ -579,7 +579,7 @@ GROUP BY([10, 90), 10ms);
 
 SQL 语法：
 
-```Go
+```sql
 select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?]
 ```
 
@@ -949,7 +949,7 @@ IoTDB> select s1 + s2 into root.expr.add(d1s1_d1s2), root.expr.add(d2s1_d2s2) fr
 ##### 按时间对齐（默认）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2
 
@@ -959,7 +959,7 @@ from root.sg.d1, root.sg.d2;
 ```
 
 该语句等价于：
-```
+```sql
 
 select s1, s2
 
@@ -970,7 +970,7 @@ from root.sg.d1, root.sg.d2;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
 
-```
+```sql
 select d1.s1, d1.s2, d2.s3, d3.s4 
 
 into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)
@@ -980,14 +980,14 @@ from root.sg;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
 
-```
+```sql
 select * into root.sg_bk.::(::) from root.sg.**;
 ```
 
 ##### 按设备对齐（使用 `ALIGN BY DEVICE`）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2, s3, s4
 
@@ -999,7 +999,7 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
-```
+```sql
 
 select avg(s1), sum(s2) + sum(s3), count(s4)
 
@@ -1011,23 +1011,23 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select * into ::(backup_${4}) from root.sg.** align by device;
 ```
 
 #### 指定目标序列为对齐序列
-```
+```sql
 
 select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;
 ```
 ## 5. 运维语句
 生成对应的查询计划
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 执行对应的查询语句，并获取分析结果
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ```
 ## 6. 运算符
@@ -1612,7 +1612,7 @@ SHOW TRIGGERS
 
 ### 12.1 语法
 
-```Go
+```sql
 CREATE (CONTINUOUS QUERY | CQ) <cq_id> 
 [RESAMPLE 
   [EVERY <every_interval>] 
@@ -1656,7 +1656,7 @@ END
 \> SELECT temperature_max from root.ln.*.*;
 ```
 #### 配置连续查询的时间窗口大小
-```
+```sql
 CREATE CONTINUOUS QUERY cq2
 
 RESAMPLE RANGE 40s
diff --git a/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md b/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
index 310ac056a..256e2794d 100644
--- a/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
+++ b/src/zh/UserGuide/latest/SQL-Manual/SQL-Manual_timecho.md
@@ -504,7 +504,7 @@ GROUP BY([10, 90), 10ms);
 
 SQL 语法：
 
-```Go
+```sql
 select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?]
 ```
 
@@ -874,7 +874,7 @@ IoTDB> select s1 + s2 into root.expr.add(d1s1_d1s2), root.expr.add(d2s1_d2s2) fr
 ##### 按时间对齐（默认）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2
 
@@ -884,7 +884,7 @@ from root.sg.d1, root.sg.d2;
 ```
 
 该语句等价于：
-```
+```sql
 
 select s1, s2
 
@@ -895,7 +895,7 @@ from root.sg.d1, root.sg.d2;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
 
-```
+```sql
 select d1.s1, d1.s2, d2.s3, d3.s4 
 
 into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)
@@ -905,14 +905,14 @@ from root.sg;
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
 
-```
+```sql
 select * into root.sg_bk.::(::) from root.sg.**;
 ```
 
 ##### 按设备对齐（使用 `ALIGN BY DEVICE`）
 
 ###### 目标设备不使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select s1, s2, s3, s4
 
@@ -924,7 +924,7 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表不使用变量占位符
-```
+```sql
 
 select avg(s1), sum(s2) + sum(s3), count(s4)
 
@@ -936,23 +936,23 @@ align by device;
 ```
 
 ###### 目标设备使用变量占位符 & 目标物理量列表使用变量占位符
-```
+```sql
 
 select * into ::(backup_${4}) from root.sg.** align by device;
 ```
 
 #### 指定目标序列为对齐序列
-```
+```sql
 
 select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;
 ```
 ## 5. 运维语句
 生成对应的查询计划
-```
+```sql
 explain select s1,s2 from root.sg.d1
 ```
 执行对应的查询语句，并获取分析结果
-```
+```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1
 ```
 ## 6. 运算符
@@ -1581,7 +1581,7 @@ END
 \> SELECT temperature_max from root.ln.*.*;
 ```
 #### 配置连续查询的时间窗口大小
-```
+```sql
 CREATE CONTINUOUS QUERY cq2
 
 RESAMPLE RANGE 40s