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*: clarify unsupported behavior in generated column #2262

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Feb 21, 2020
Merged

*: clarify unsupported behavior in generated column #2262

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*: clarify unsupported behavior in generated column
Deardrops Feb 20, 2020
6c896f9
address comment
Deardrops Feb 21, 2020
e391204
Merge branch 'master' into fix-generated-columns
Deardrops Feb 21, 2020
13d96db
address comment
Deardrops Feb 21, 2020
aecfe9b
Merge remote-tracking branch 'origin/master' into fix-generated-columns
Deardrops Feb 21, 2020
c9f66c5
Merge branch 'fix-generated-columns' of github.com:Deardrops/docs-cn …
Deardrops Feb 21, 2020
42cc94b
Update v2.1/reference/sql/generated-columns.md
Deardrops Feb 21, 2020
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4 changes: 3 additions & 1 deletion dev/reference/sql/generated-columns.md
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Expand Up @@ -94,4 +94,6 @@ CREATE TABLE person (
目前 JSON and generated column 有以下局限性：

- 不能通过 `ALTER TABLE` 增加 `STORED` 存储方式的 generated column；
- 并未支持所有的 [JSON 函数](/dev/reference/sql/functions-and-operators/json-functions.md)。
- 不能通过 `ALTER TABLE` 将 generated stored column 转换为普通列，也不能将普通列转换成 generated stored column；
- 不能通过 `ALTER TABLE` 修改 generated stored column 的**生成列表达式**；
- 并未支持所有的 [JSON 函数](/dev/reference/sql/functions-and-operators/json-functions.md)。
3 changes: 3 additions & 0 deletions v2.1/reference/sql/generated-columns.md
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Expand Up @@ -84,4 +84,7 @@ CREATE TABLE person (

- 不能通过 `ALTER TABLE` 增加 `STORED` 存储方式的 generated column；
- 不能通过 `ALTER TABLE` 在 generated column 上增加索引；
- 不能通过 `ALTER TABLE` 将 generated stored column 转换为普通列，也不能将普通列转换成 generated stored column；
- 不能通过 `ALTER TABLE` 修改 generated stored column 的**生成列表达式**；
- 不支持在 DML 语句中将生成列赋值为 `DEFAULT`；
- 并未支持所有的 [JSON 函数](/v2.1/reference/sql/functions-and-operators/json-functions.md)。
2 changes: 2 additions & 0 deletions v3.0/reference/sql/generated-columns.md
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Expand Up @@ -96,4 +96,6 @@ CREATE TABLE person (

- 不能通过 `ALTER TABLE` 增加 `STORED` 存储方式的 generated column；
- 不能通过 `ALTER TABLE` 在 generated column 上增加索引；
- 不能通过 `ALTER TABLE` 将 generated stored column 转换为普通列，也不能将普通列转换成 generated stored column；
- 不能通过 `ALTER TABLE` 修改 generated stored column 的**生成列表达式**；
- 并未支持所有的 [JSON 函数](/v3.0/reference/sql/functions-and-operators/json-functions.md)。
3 changes: 2 additions & 1 deletion v3.1/reference/sql/generated-columns.md
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -94,5 +94,6 @@ CREATE TABLE person (
目前 JSON and generated column 有以下局限性：

- 不能通过 `ALTER TABLE` 增加 `STORED` 存储方式的 generated column；
- 不能通过 `ALTER TABLE` 在 generated column 上增加索引；
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- 不能通过 `ALTER TABLE` 将 generated stored column 转换为普通列，也不能将普通列转换成 generated stored column；
- 不能通过 `ALTER TABLE` 修改 generated stored column 的**生成列表达式**；
- 并未支持所有的 [JSON 函数](/v3.1/reference/sql/functions-and-operators/json-functions.md)。