diff --git a/docs/en/12-taos-sql/02-database.md b/docs/en/12-taos-sql/02-database.md index 91164a7072f9bf1613165faa512b79a493571e99..ec007d68302f719ec09b1b13f58a1a6bddb2748c 100644 --- a/docs/en/12-taos-sql/02-database.md +++ b/docs/en/12-taos-sql/02-database.md @@ -35,8 +35,8 @@ database_option: { | TABLE_SUFFIX value | TSDB_PAGESIZE value | WAL_RETENTION_PERIOD value - | WAL_ROLL_PERIOD value | WAL_RETENTION_SIZE value + | WAL_ROLL_PERIOD value | WAL_SEGMENT_SIZE value } ``` @@ -75,11 +75,10 @@ database_option: { - TABLE_PREFIX：The prefix length in the table name that is ignored when distributing table to vnode based on table name. - TABLE_SUFFIX：The suffix length in the table name that is ignored when distributing table to vnode based on table name. - TSDB_PAGESIZE: The page size of the data storage engine in a vnode. The unit is KB. The default is 4 KB. The range is 1 to 16384, that is, 1 KB to 16 MB. -- WAL_RETENTION_PERIOD: specifies the maximum time of which WAL files are to be kept after consumption. This parameter is used for data subscription. Enter a time in seconds. The default value 0. A value of 0 indicates that WAL files are not required to keep after consumption. -1: the time of WAL files to keep has no upper limit. -- WAL_RETENTION_SIZE: specifies the maximum total size of which WAL files are to be kept after consumption. This parameter is used for data subscription. Enter a size in KB. The default value is 0. A value of 0 indicates that WAL files are not required to keep after consumption. -1: the total size of WAL files to keep has no upper limit. +- WAL_RETENTION_PERIOD: specifies the maximum time of which WAL files are to be kept for consumption. This parameter is used for data subscription. Enter a time in seconds. The default value 0. A value of 0 indicates that WAL files are not required to keep for consumption. Alter it with a proper value at first to create topics. +- WAL_RETENTION_SIZE: specifies the maximum total size of which WAL files are to be kept for consumption. This parameter is used for data subscription. Enter a size in KB. The default value is 0. A value of 0 indicates that the total size of WAL files to keep for consumption has no upper limit. - WAL_ROLL_PERIOD: specifies the time after which WAL files are rotated. After this period elapses, a new WAL file is created. The default value is 0. A value of 0 indicates that a new WAL file is created only after TSDB data in memory are flushed to disk. - WAL_SEGMENT_SIZE: specifies the maximum size of a WAL file. After the current WAL file reaches this size, a new WAL file is created. The default value is 0. A value of 0 indicates that a new WAL file is created only after TSDB data in memory are flushed to disk. - ### Example Statement ```sql @@ -123,6 +122,8 @@ alter_database_option: { | WAL_LEVEL value | WAL_FSYNC_PERIOD value | KEEP value + | WAL_RETENTION_PERIOD value + | WAL_RETENTION_SIZE value } ``` diff --git a/docs/en/12-taos-sql/29-changes.md b/docs/en/12-taos-sql/29-changes.md index 341791d6755aa66fddd98561823ee0e5ac74ba3f..a695a2cae18f28e090816ec98a978674a028df30 100644 --- a/docs/en/12-taos-sql/29-changes.md +++ b/docs/en/12-taos-sql/29-changes.md @@ -27,7 +27,7 @@ The following data types can be used in the schema for standard tables. | - | :------- | :-------- | :------- | | 1 | ALTER ACCOUNT | Deprecated| This Enterprise Edition-only statement has been removed. It returns the error "This statement is no longer supported." | 2 | ALTER ALL DNODES | Added | Modifies the configuration of all dnodes. -| 3 | ALTER DATABASE | Modified | Deprecated +| 3 | ALTER DATABASE | Modified | Deprecated | 4 | ALTER STABLE | Modified | Deprecated | 5 | ALTER TABLE | Modified | Deprecated | 6 | ALTER USER | Modified | Deprecated diff --git a/docs/zh/12-taos-sql/02-database.md b/docs/zh/12-taos-sql/02-database.md index 4c698dad9235bdb5ae683cd86025138761f7d1d3..b54998e08d33869d113ae883b14f929e5381f168 100644 --- a/docs/zh/12-taos-sql/02-database.md +++ b/docs/zh/12-taos-sql/02-database.md @@ -35,8 +35,8 @@ database_option: { | TABLE_SUFFIX value | TSDB_PAGESIZE value | WAL_RETENTION_PERIOD value - | WAL_ROLL_PERIOD value | WAL_RETENTION_SIZE value + | WAL_ROLL_PERIOD value | WAL_SEGMENT_SIZE value } ``` @@ -75,11 +75,10 @@ database_option: { - TABLE_PREFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的前缀的长度。 - TABLE_SUFFIX：内部存储引擎根据表名分配存储该表数据的 VNODE 时要忽略的后缀的长度。 - TSDB_PAGESIZE：一个 VNODE 中时序数据存储引擎的页大小，单位为 KB，默认为 4 KB。范围为 1 到 16384，即 1 KB到 16 MB。 -- WAL_RETENTION_PERIOD：数据订阅已消费WAL日志，WAL文件的最大额外保留的时长策略。单位为 s。默认为 0，表示无需额外保留。-1, 表示额外保留，时间无上限。 -- WAL_RETENTION_SIZE：数据订阅已消费WAL日志，WAL文件的最大额外保留的累计大小策略。单位为 KB。默认为 0，表示无需额外保留。-1, 表示额外保留，累计大小无上限。 +- WAL_RETENTION_PERIOD: 为了数据订阅消费，需要WAL日志文件额外保留的最大时长策略。WAL日志清理，不受订阅客户端消费状态影响。单位为 s。默认为 0，表示无需为订阅保留。新建订阅，应先设置恰当的时长策略。 +- WAL_RETENTION_SIZE：为了数据订阅消费，需要WAL日志文件额外保留的最大累计大小策略。单位为 KB。默认为 0，表示累计大小无上限。 - WAL_ROLL_PERIOD：wal 文件切换时长，单位为 s。当WAL文件创建并写入后，经过该时间，会自动创建一个新的WAL文件。默认为 0，即仅在TSDB落盘时创建新文件。 - WAL_SEGMENT_SIZE：wal 单个文件大小，单位为 KB。当前写入文件大小超过上限后会自动创建一个新的WAL文件。默认为 0，即仅在TSDB落盘时创建新文件。 - ### 创建数据库示例 ```sql diff --git a/docs/zh/12-taos-sql/29-changes.md b/docs/zh/12-taos-sql/29-changes.md index 9d67533cdea5c055c8d3ff58000fb80ac640e271..af45d84ff22b32325f0eabfbcb4794f30c71c79b 100644 --- a/docs/zh/12-taos-sql/29-changes.md +++ b/docs/zh/12-taos-sql/29-changes.md @@ -27,7 +27,7 @@ description: "TDengine 3.0 版本的语法变更说明" | - | :------- | :-------- | :------- | | 1 | ALTER ACCOUNT | 废除 | 2.x中为企业版功能，3.0不再支持。语法暂时保留了，执行报“This statement is no longer supported”错误。 | 2 | ALTER ALL DNODES | 新增 | 修改所有DNODE的参数。 -| 3 | ALTER DATABASE | 调整 | 废除 +| 3 | ALTER DATABASE | 调整 | 废除 | 4 | ALTER STABLE | 调整 | 废除 | 5 | ALTER TABLE | 调整 | 废除 | 6 | ALTER USER | 调整 | 废除