1- title: Databend ๅ
ๅคๅถๆฐๆฎๅ
ฑไบซ็ๅทฅไฝๅ็
1+ ---
2+ title : Databend ๅ
ๆท่ดๆฐๆฎๅ
ฑไบซ็ๅทฅไฝๅ็
23---
34
45## ไปไนๆฏๆฐๆฎๅ
ฑไบซ๏ผ
56
67ไธๅๅข้้่ฆ็ธๅๆฐๆฎ็ไธๅ้จๅใไผ ็ป่งฃๅณๆนๆก้่ฆๅคๆฌกๅคๅถๆฐๆฎ๏ผๆๆฌ้ซๆไธ้พไปฅ็ปดๆคใ
78
8- Databend ็ ** [ ATTACH TABLE] ( /sql/sql-commands/ddl/table/attach-table ) ** ไผ้
ๅฐ่งฃๅณไบ่ฟไธช้ฎ้ข๏ผไธบ็ธๅๆฐๆฎๅๅปบๅคไธชโ่งๅพโ่ๆ ้ๅคๅถ ใ่ฟๅฉ็จไบ Databend ็** ็ๆญฃ่ฎก็ฎๅญๅจๅ็ฆป ** ๆถๆ๏ผ ๆ ่ฎบไฝฟ็จไบๅญๅจ่ฟๆฏๆฌๅฐๅฏน่ฑกๅญๅจ๏ผ** ๅญๅจไธๆฌก๏ผ้ๅค่ฎฟ้ฎ** ใ
9+ Databend ็ ** [ ATTACH TABLE] ( /sql/sql-commands/ddl/table/attach-table ) ** ไผ้
ๅฐ่งฃๅณไบ่ฟไธช้ฎ้ข๏ผไธบๅไธไปฝๆฐๆฎๅๅปบๅคไธช่งๅพ่ๆ ้ๅคๅถ ใ่ฟๅฉ็จไบ Databend ็** ็ๆญฃๅญๅจ่ฎก็ฎๅ็ฆป ** ๆถๆโโ ๆ ่ฎบไฝฟ็จไบๅญๅจ่ฟๆฏๆฌๅฐๅฏน่ฑกๅญๅจ๏ผ** ๅญๅจไธๆฌก๏ผ้ๅค่ฎฟ้ฎ** ใ
910
10- ๅฏไปฅๅฐ ATTACH TABLE ็ฑปๆฏไธบ่ฎก็ฎๆบๅฟซๆทๆนๅผโโๅฎไปฌๆๅๅๅงๆไปถ่ไธๅคๅถๅฎ ใ
11+ ๅฏไปฅๅฐ ATTACH TABLE ๆณ่ฑกๆ่ฎก็ฎๆบๅฟซๆทๆนๅผโโๅฎไปฌๆๅๅๅงๆไปถ่ไธๅคๅถๆไปถ ใ
1112
1213```
13- ๅฏน่ฑกๅญๅจ ( Object Storage) (S3, MinIO, Azure ็ญ)
14+ ๅฏน่ฑกๅญๅจ๏ผ Object Storage๏ผ (S3, MinIO, Azure ็ญ)
1415 โโโโโโโโโโโโโโโ
1516 โ ๆจ็ๆฐๆฎ โ
1617 โโโโโโโโฌโโโโโโโ
@@ -26,27 +27,27 @@ Databend ็ **[ATTACH TABLE](/sql/sql-commands/ddl/table/attach-table)** ไผ้
2627
2728## ๅฆไฝไฝฟ็จ ATTACH TABLE
2829
29- ** ๆญฅ้ชค 1๏ผๆฅๆพๆจ็ๆฐๆฎไฝ็ฝฎ **
30+ ** ๆญฅ้ชค 1๏ผๆฅๆพๆฐๆฎไฝ็ฝฎ **
3031``` sql
3132SELECT snapshot_location FROM FUSE_SNAPSHOT(' default' , ' company_sales' );
32- -- ็ปๆ๏ผ 1/23351/_ss/... โ ๆฐๆฎไฝไบ s3://your-bucket/1/23351/
33+ -- ็ปๆ๏ผ1/23351/_ss/... โ ๆฐๆฎไฝไบ s3://your-bucket/1/23351/
3334```
3435
3536** ๆญฅ้ชค 2๏ผๅๅปบๅข้็นๅฎ่งๅพ**
3637``` sql
3738-- ่ฅ้๏ผๅฎขๆท่กไธบๅๆ
3839ATTACH TABLE marketing_view (customer_id, product, amount, order_date)
39- ' s3://your-bucket/1/23351/' CONNECTION = (AWS_KEY_ID = ' xxx' , AWS_SECRET_KEY = ' yyy' );
40+ ' s3://your-bucket/1/23351/' CONNECTION = (ACCESS_KEY_ID = ' xxx' , SECRET_ACCESS_KEY = ' yyy' );
4041
4142-- ่ดขๅก๏ผๆถๅ
ฅ่ท่ธช
4243ATTACH TABLE finance_view (order_id, amount, profit, order_date)
43- ' s3://your-bucket/1/23351/' CONNECTION = (AWS_KEY_ID = ' xxx' , AWS_SECRET_KEY = ' yyy' );
44+ ' s3://your-bucket/1/23351/' CONNECTION = (ACCESS_KEY_ID = ' xxx' , SECRET_ACCESS_KEY = ' yyy' );
4445
45- -- ไบบๅ่ตๆบ๏ผไธๅ
ๅซ่ช่ต็ๅๅทฅไฟกๆฏ
46+ -- ไบบๅ่ตๆบ๏ผๅๅทฅไฟกๆฏ๏ผไธๅซ่ช่ต๏ผ
4647ATTACH TABLE hr_employees (employee_id, name, department)
4748' s3://data/1/23351/' CONNECTION = (...);
4849
49- -- ๅผๅ๏ผไธๅ
ๅซๆๆๆฐๆฎ็็ไบง็ปๆ
50+ -- ๅผๅ๏ผ็ไบง็ปๆ๏ผไธๅซๆๆๆฐๆฎ๏ผ
5051ATTACH TABLE dev_customers (customer_id, country, created_date)
5152' s3://data/1/23351/' CONNECTION = (...);
5253```
@@ -62,17 +63,17 @@ SELECT order_date, SUM(profit) FROM finance_view GROUP BY order_date;
6263
6364## ไธป่ฆไผๅฟ
6465
65- ** ๅฎๆถๆดๆฐ** ๏ผๅฝๆบๆฐๆฎๆดๆนๆถ๏ผๆๆ้ๅ ่กจไผ็ซๅณ็ๅฐๆดๆฐ
66+ ** ๅฎๆถๆดๆฐ** ๏ผๅฝๆบๆฐๆฎๅ็ๅๅๆถ๏ผๆๆ้ๅ ่กจ้ฝ่ฝ็ซๅณ็ๅฐๆดๆฐใ
6667``` sql
6768INSERT INTO company_sales
VALUES (
1001 ,
501 ,
' Laptop' ,
1299 .
99 ,
299 .
99 ,
' [email protected] ' ,
' 2024-01-20' );
68- SELECT COUNT (* ) FROM marketing_view WHERE order_date = ' 2024-01-20' ; -- ่ฟๅ๏ผ 1
69+ SELECT COUNT (* ) FROM marketing_view WHERE order_date = ' 2024-01-20' ; -- ่ฟๅ๏ผ1
6970```
7071
71- ** ๅ็บงๅฎๅ
จๆง** ๏ผๅข้ๅช่ฝ็ๅฐไปไปฌ้่ฆ็ๅ
ๅฎนโโ่ฅ้ๆ ๆณ็ๅฐๅฉๆถฆ๏ผ่ดขๅกๆ ๆณ็ๅฐๅฎขๆท้ฎ็ฎฑ
72+ ** ๅ็บงๅฎๅ
จๆง** ๏ผๅข้ๅช่ฝ็ๅฐไปไปฌ้่ฆ็ๅ
ๅฎนโโ่ฅ้ๅข้็ไธๅฐๅฉๆถฆ๏ผ่ดขๅกๅข้็ไธๅฐๅฎขๆท้ฎ็ฎฑใ
7273
73- ** ๅผบไธ่ดๆง** ๏ผๆฐธ่ฟไธไผ่ฏปๅ้จๅๆดๆฐ๏ผๅง็ป็ๅฐๅฎๆดๅฟซ็
งโโ้ๅธธ้ๅ่ดขๅกๆฅๅๅๅ่งๆง
74+ ** ๅผบไธ่ดๆง** ๏ผๆฐธ่ฟไธไผ่ฏปๅ้จๅๆดๆฐ๏ผๅง็ป็ๅฐๅฎๆดๅฟซ็
งโโ้ๅธธ้ๅ่ดขๅกๆฅๅๅๅ่งๆง่ฆๆฑใ
7475
75- ** ๅฎๆดๆง่ฝ** ๏ผๆๆ็ดขๅผ๏ผIndex๏ผ่ชๅจๅทฅไฝ๏ผไธๅธธ่ง่กจ็ธๅ็้ๅบฆ
76+ ** ๅฎๆดๆง่ฝ** ๏ผๆๆ็ดขๅผ๏ผIndex๏ผ่ชๅจ็ๆ๏ผๆง่ฝไธๅธธ่ง่กจ็ธๅใ
7677
7778## ไธบไปไน่ฟๅพ้่ฆ
7879
@@ -87,10 +88,10 @@ SELECT COUNT(*) FROM marketing_view WHERE order_date = '2024-01-20'; -- ่ฟๅ
8788## ๅบๅฑๅทฅไฝๅ็
8889
8990```
90- ๆฅ่ฏข๏ผ SELECT product, SUM(amount) FROM marketing_view GROUP BY product
91+ ๆฅ่ฏข๏ผQuery๏ผ๏ผ SELECT product, SUM(amount) FROM marketing_view GROUP BY product
9192
9293โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
93- โ ๆฅ่ฏขๆง่กๆต็จ โ
94+ โ ๆฅ่ฏขๆง่กๆต็จ โ
9495โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
9596
9697 ็จๆทๆฅ่ฏข
@@ -103,15 +104,15 @@ SELECT COUNT(*) FROM marketing_view WHERE order_date = '2024-01-20'; -- ่ฟๅ
103104 โ
104105 โผ
105106โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
106- โ 2. ๅบ็จๅ โโโโโบโ ่ฟๆปคๅจ๏ผ customer_id, product, โ
107+ โ 2. ๅบ็จๅ โโโโโบโ ่ฟๆปคๅจ๏ผcustomer_id, product, โ
107108โ ่ฟๆปคๅจ โ โ amount, order_date โ
108109โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
109110 โ
110111 โผ
111112โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
112113โ 3. ๆฃๆฅ็ป่ฎกไฟกๆฏ โโโโโบโ โข ๆฎตๆๅฐ/ๆๅคงๅผ โ
113114โ ๅ็ดขๅผ โ โ โข ๅธ้่ฟๆปคๅจ โ
114- โโโโโโโโโโโโโโโโโโโโโ โ โข ่ๅ็ดขๅผ โ
115+ โโโโโโโโโโโโโโโโโโโโโ โ โข ่ๅ็ดขๅผ โ
115116 โ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
116117 โผ
117118โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
@@ -122,13 +123,13 @@ SELECT COUNT(*) FROM marketing_view WHERE order_date = '2024-01-20'; -- ่ฟๅ
122123 โผ
123124โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
124125โ 5. ๆฌๅฐ โโโโโบโ ๅฎๆดไผๅๅๅนถ่กๅค็ โ
125- โ ๆง่ก โ โ ไฝฟ็จๆๆๅฏ็จ็ดขๅผๅค็ โ
126+ โ ๆง่ก โ โ ไฝฟ็จๆๆๅฏ็จ็ดขๅผ่ฟ่กๅค็ โ
126127โโโโโโโโโโโโโโโโโโโโโ โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
127128 โ
128129 โผ
129- ็ปๆ๏ผ ไบงๅ้ๅฎๆ่ฆ
130+ ็ปๆ๏ผไบงๅ้ๅฎๆ่ฆ
130131```
131132
132- ๅคไธช Databend ้็พคๅฏไปฅๅๆถๆง่กๆญคๆต็จ่ๆ ้ๅ่ฐโโ็ๆญฃ็่ฎก็ฎๅญๅจๅ็ฆปๅจ่กๅจไธญ ใ
133+ ๅคไธช Databend ้็พคๅฏไปฅๅๆถๆง่กๆญคๆต็จ่ๆ ้ๅ่ฐโโ็ๆญฃ็ๅญๅจ่ฎก็ฎๅ็ฆปๅจๅฎ้
ๅบ็จไธญ็ไฝ็ฐ ใ
133134
134- ATTACH TABLE ไปฃ่กจไบไธไธชๆ นๆฌๆง่ฝฌๅ๏ผ** ไปไธบๆฏไธช็จไพๅคๅถๆฐๆฎ่ฝฌๅไธไธชๅฏๆฌๅคไธช่งๅพ** ใๆ ่ฎบๅจไบ็ฏๅข่ฟๆฏๆฌๅฐ็ฏๅขไธญ๏ผDatabend ็ๆถๆ้ฝ่ฝๅฎ็ฐๅผบๅคงใ้ซๆ็ๆฐๆฎๅ
ฑไบซ๏ผๅๆถไฟๆไผไธ็บงไธ่ดๆงๅๅฎๅ
จๆง ใ
135+ ATTACH TABLE ไปฃ่กจไบไธไธชๆ นๆฌๆง่ฝฌๅ๏ผ** ไปไธบๆฏไธช็จไพๅคๅถๆฐๆฎ่ฝฌๅไธไธชๅฏๆฌๅคไธช่งๅพ** ใๆ ่ฎบๅจไบ็ฏๅข่ฟๆฏๆฌๅฐ็ฏๅขไธญ๏ผDatabend ็ๆถๆ้ฝ่ฝๅฎ็ฐๅผบๅคงใ้ซๆ็ๆฐๆฎๅ
ฑไบซ๏ผๅๆถไฟๆไผไธ็บง็ไธ่ดๆงๅๅฎๅ
จๆง ใ
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