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๐ŸŒ Translate 10-ddl-create-table.md to Simplified-Chinese
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โ€Ždocs/cn/sql-reference/10-sql-commands/00-ddl/04-sequence/create-sequence.mdโ€Ž

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import FunctionDescription from '@site/src/components/FunctionDescription';
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<FunctionDescription description="ๅผ•ๅ…ฅๆˆ–ๆ›ดๆ–ฐไบŽ๏ผšv1.2.784"/>
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<FunctionDescription description="ๅผ•ๅ…ฅๆˆ–ๆ›ดๆ–ฐไบŽ๏ผšv1.2.807"/>
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ๅœจ Databend ไธญๅˆ›ๅปบไธ€ไธชๆ–ฐ็š„ๅบๅˆ—๏ผˆSequence๏ผ‰ใ€‚
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ๅบๅˆ—๏ผˆSequence๏ผ‰ๆ˜ฏไธ€็ง็”จไบŽ่‡ชๅŠจ็”Ÿๆˆๅ”ฏไธ€ๆ•ฐๅญ—ๆ ‡่ฏ†็ฌฆ็š„ๅฏน่ฑก๏ผŒๅธธ็”จไบŽไธบ่กจไธญ็š„่กŒๅˆ†้…ๅ”ฏไธ€ๆ ‡่ฏ†็ฌฆ๏ผŒไพ‹ๅฆ‚็”จๆˆท ID ๅˆ—ใ€‚้€šๅธธ๏ผŒๅบๅˆ—ไปŽๆŒ‡ๅฎšๅ€ผๅผ€ๅง‹๏ผŒๅนถๆŒ‰ๆŒ‡ๅฎš้‡้€’ๅขžใ€‚
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:::note
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Databend ไธญ็š„ๅบๅˆ—็›ฎๅ‰ไปŽ 1 ๅผ€ๅง‹๏ผŒๅนถไปฅ 1 ไธบๆญฅ้•ฟ้€’ๅขžใ€‚่™ฝ็„ถๅบๅˆ—ไฟ่ฏๅ€ผ็š„ๅ”ฏไธ€ๆ€ง๏ผŒไฝ†**ไธ**ไฟ่ฏๅ…ถ่ฟž็ปญๆ€ง๏ผˆๅณๆฒกๆœ‰้—ด้š™๏ผ‰ใ€‚
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:::
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ๅบๅˆ—๏ผˆSequence๏ผ‰ๆ˜ฏไธ€็ง่‡ชๅŠจ็”Ÿๆˆๅ”ฏไธ€ๆ•ฐๅญ—ๆ ‡่ฏ†็ฌฆ็š„ๅฏน่ฑก๏ผŒ้€šๅธธ็”จไบŽไธบ่กจ่กŒๅˆ†้…ไธๅŒ็š„ๅ€ผ๏ผˆไพ‹ๅฆ‚็”จๆˆท ID๏ผ‰ใ€‚่™ฝ็„ถๅบๅˆ—ไฟ่ฏๅ€ผ็š„ๅ”ฏไธ€ๆ€ง๏ผŒไฝ†**ไธ**ไฟ่ฏ่ฟž็ปญๆ€ง๏ผˆๅณๅฏ่ƒฝๅ‡บ็Žฐ้—ด้š™๏ผ‰ใ€‚
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## ่ฏญๆณ•
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```sql
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CREATE [ OR REPLACE ] SEQUENCE [IF NOT EXISTS] <sequence>
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CREATE [ OR REPLACE ] SEQUENCE [ IF NOT EXISTS ] <sequence>
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[ START [ = ] <start_value> ]
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[ INCREMENT [ = ] <increment_value> ]
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```
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| ๅ‚ๆ•ฐ | ่ฏดๆ˜Ž |
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|--------------|-----------------------------------------|
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| `<sequence>` | ่ฆๅˆ›ๅปบ็š„ๅบๅˆ—็š„ๅ็งฐใ€‚ |
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| ๅ‚ๆ•ฐ | ๆ่ฟฐ | ้ป˜่ฎคๅ€ผ |
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|----------------|------------------------------------------------|--------|
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| `<sequence>` | ่ฆๅˆ›ๅปบ็š„ๅบๅˆ—ๅ็งฐใ€‚ | - |
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| `START` | ๅบๅˆ—็š„ๅˆๅง‹ๅ€ผใ€‚ | 1 |
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| `INCREMENT` | ๆฏๆฌก่ฐƒ็”จ NEXTVAL ๆ—ถ็š„ๅขž้‡ๅ€ผใ€‚ | 1 |
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## ่ฎฟ้—ฎๆŽงๅˆถ่ฆๆฑ‚
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| ๆƒ้™ | ๅฏน่ฑก็ฑปๅž‹ | ่ฏดๆ˜Ž |
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|:----------------|:------------|:----------------------|
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| CREATE SEQUENCE | ๅ…จๅฑ€ | ๅˆ›ๅปบไธ€ไธชๅบๅˆ—ใ€‚ |
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| ๆƒ้™ | ๅฏน่ฑก็ฑปๅž‹ | ๆ่ฟฐ |
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|:----------------|:---------|:---------------|
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| CREATE SEQUENCE | ๅ…จๅฑ€ | ๅˆ›ๅปบๅบๅˆ—ใ€‚ |
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่ฆๅˆ›ๅปบไธ€ไธชๅบๅˆ—๏ผŒๆ‰ง่กŒๆ“ไฝœ็š„็”จๆˆทๆˆ– [current_role](/guides/security/access-control/roles) ๅฟ…้กปๆ‹ฅๆœ‰ CREATE SEQUENCE [ๆƒ้™](/guides/security/access-control/privileges)ใ€‚
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่ฆๅˆ›ๅปบๅบๅˆ—๏ผŒๆ‰ง่กŒๆ“ไฝœ็š„็”จๆˆทๆˆ– [current_role](/guides/security/access-control/roles) ๅฟ…้กปๆ‹ฅๆœ‰ CREATE SEQUENCE [ๆƒ้™](/guides/security/access-control/privileges)ใ€‚
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:::note
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`enable_experimental_sequence_rbac_check` ่ฎพ็ฝฎ็”จไบŽๆŽงๅˆถๅบๅˆ—็บงๅˆซ็š„่ฎฟ้—ฎๆŽงๅˆถใ€‚้ป˜่ฎคๆƒ…ๅ†ตไธ‹๏ผŒๆญคๅŠŸ่ƒฝๆ˜ฏ็ฆ็”จ็š„ใ€‚
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ๅˆ›ๅปบๅบๅˆ—ไป…่ฆๆฑ‚็”จๆˆทๆ‹ฅๆœ‰่ถ…็บง็”จๆˆทๆƒ้™๏ผŒไปŽ่€Œ็ป•่ฟ‡่ฏฆ็ป†็š„ RBAC ๆฃ€ๆŸฅใ€‚
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ๅฏ็”จๅŽ๏ผŒๅœจๅˆ›ๅปบๅบๅˆ—ๆ—ถๅฐ†ๅผบๅˆถๆ‰ง่กŒ็ฒพ็ป†็š„ๆƒ้™้ชŒ่ฏใ€‚
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`enable_experimental_sequence_rbac_check` ่ฎพ็ฝฎๆŽงๅˆถๅบๅˆ—็บงๅˆซ็š„่ฎฟ้—ฎๆŽงๅˆถ๏ผŒ้ป˜่ฎค็ฆ็”จใ€‚
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ๆญคๆ—ถๅˆ›ๅปบๅบๅˆ—ไป…้œ€็”จๆˆทๆ‹ฅๆœ‰่ถ…็บง็”จๆˆทๆƒ้™๏ผŒ็ป•่ฟ‡่ฏฆ็ป†็š„ RBAC ๆฃ€ๆŸฅใ€‚
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ๅฏ็”จๅŽ๏ผŒๅฐ†ๅœจๅˆ›ๅปบๅบๅˆ—ๆ—ถๆ‰ง่กŒ็ป†็ฒ’ๅบฆๆƒ้™้ชŒ่ฏใ€‚
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่ฟ™ๆ˜ฏไธ€ไธชๅฎž้ชŒๆ€งๅŠŸ่ƒฝ๏ผŒๆœชๆฅๅฏ่ƒฝไผš้ป˜่ฎคๅฏ็”จใ€‚
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่ฏฅๅŠŸ่ƒฝไธบๅฎž้ชŒๆ€ง่ดจ๏ผŒๆœชๆฅๅฏ่ƒฝ้ป˜่ฎคๅผ€ๅฏใ€‚
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:::
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## ็คบไพ‹
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ๆญค็คบไพ‹ๅฑ•็คบไบ†ๅฆ‚ไฝ•ไฝฟ็”จๅบๅˆ—ๅ’Œ [NEXTVAL](/sql/sql-functions/sequence-functions/nextval) ๅ‡ฝๆ•ฐไธบ่กจไธญ็š„่กŒ่‡ชๅŠจ็”Ÿๆˆๅนถๅˆ†้…ๅ”ฏไธ€ๆ ‡่ฏ†็ฌฆใ€‚
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### ๅŸบๆœฌๅบๅˆ—
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ไฝฟ็”จ้ป˜่ฎค่ฎพ็ฝฎๅˆ›ๅปบๅบๅˆ—๏ผˆไปŽ 1 ๅผ€ๅง‹๏ผŒๆญฅ้•ฟไธบ 1๏ผ‰๏ผš
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```sql
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-- ๅˆ›ๅปบไธ€ไธชๅไธบ staff_id_seq ็š„ๆ–ฐๅบๅˆ—
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CREATE SEQUENCE staff_id_seq;
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-- ๅˆ›ๅปบไธ€ไธชๅไธบ staff ็š„ๆ–ฐ่กจ๏ผŒๅŒ…ๅซ staff_idใ€name ๅ’Œ department ๅˆ—
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CREATE TABLE staff (
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staff_id INT,
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name VARCHAR(50),
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department VARCHAR(50)
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);
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-- ๅ‘ staff ่กจไธญๆ’ๅ…ฅๆ–ฐ่กŒ๏ผŒไฝฟ็”จ staff_id_seq ๅบๅˆ—็š„ไธ‹ไธ€ไธชๅ€ผไธบ staff_id ๅˆ—่ต‹ๅ€ผ
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INSERT INTO staff (staff_id, name, department)
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VALUES (NEXTVAL(staff_id_seq), 'John Doe', 'HR');
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-- ๅ‘ staff ่กจไธญๆ’ๅ…ฅๅฆไธ€่กŒ๏ผŒไฝฟ็”จ staff_id_seq ๅบๅˆ—็š„ไธ‹ไธ€ไธชๅ€ผไธบ staff_id ๅˆ—่ต‹ๅ€ผ
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INSERT INTO staff (staff_id, name, department)
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VALUES (NEXTVAL(staff_id_seq), 'Jane Smith', 'Finance');
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โ”‚ 2 โ”‚ Jane Smith โ”‚ Finance โ”‚
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โ”‚ 1 โ”‚ John Doe โ”‚ HR โ”‚
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โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜
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```
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### ่‡ชๅฎšไน‰่ตทๅง‹ๅ€ผไธŽๆญฅ้•ฟ
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ๅˆ›ๅปบไปŽ 1000 ๅผ€ๅง‹ใ€ๆญฅ้•ฟไธบ 10 ็š„ๅบๅˆ—๏ผš
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```sql
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CREATE SEQUENCE order_id_seq START = 1000 INCREMENT = 10;
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CREATE TABLE orders (
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order_id BIGINT,
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order_name VARCHAR(100)
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);
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INSERT INTO orders (order_id, order_name)
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VALUES (NEXTVAL(order_id_seq), 'Order A');
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INSERT INTO orders (order_id, order_name)
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VALUES (NEXTVAL(order_id_seq), 'Order B');
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SELECT * FROM orders;
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โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
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โ”‚ order_id โ”‚ order_name โ”‚
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โ”œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ผโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ค
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โ”‚ 1000 โ”‚ Order A โ”‚
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โ”‚ 1010 โ”‚ Order B โ”‚
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โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜
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```

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