td-660: set row length limit to 16384 bytes
This commit is contained in:
Bomin Zhang
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2881473921
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ff7058c3e0
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@ -53,7 +53,7 @@ STable从属于库，一个STable只属于一个库，但一个库可以有一
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说明：
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1. TAGS列总长度不能超过64k bytes；
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1. TAGS列总长度不能超过16k bytes；
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2. TAGS列的数据类型不能是timestamp；
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3. TAGS列名不能与其他列名相同;
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4. TAGS列名不能为预留关键字.
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@ -22,7 +22,7 @@ New keyword "tags" is introduced, where tag_name is the tag name, and tag_type i
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Note：
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1. The bytes of all tags together shall be less than 64k
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1. The bytes of all tags together shall be less than 16k
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2. Tag's data type can not be time stamp
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3. Tag name shall be different from the field name
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4. Tag name shall not be the same as system keywords
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@ -63,7 +63,7 @@ TDengine缺省的时间戳是毫秒精度，但通过修改配置参数enableMic
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| 3 | BIGINT | 8 | 长整型，范围 [-2^63+1, 2^63-1], -2^63用于NULL |
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| 4 | FLOAT | 4 | 浮点型，有效位数6-7，范围 [-3.4E38, 3.4E38] |
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| 5 | DOUBLE | 8 | 双精度浮点型，有效位数15-16，范围 [-1.7E308, 1.7E308] |
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| 6 | BINARY | 自定义 | 用于记录字符串，理论上，最长可以有65526字节，但由于每行数据最多64K字节，实际上限一般小于理论值。 binary仅支持字符串输入，字符串两端使用单引号引用，否则英文全部自动转化为小写。使用时须指定大小，如binary(20)定义了最长为20个字符的字符串，每个字符占1byte的存储空间。如果用户字符串超出20字节将会报错。对于字符串内的单引号，可以用转义字符反斜线加单引号来表示， 即 **\’**。 |
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| 6 | BINARY | 自定义 | 用于记录字符串，理论上，最长可以有16374字节，但由于每行数据最多16K字节，实际上限一般小于理论值。 binary仅支持字符串输入，字符串两端使用单引号引用，否则英文全部自动转化为小写。使用时须指定大小，如binary(20)定义了最长为20个字符的字符串，每个字符占1byte的存储空间。如果用户字符串超出20字节将会报错。对于字符串内的单引号，可以用转义字符反斜线加单引号来表示， 即 **\’**。 |
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| 7 | SMALLINT | 2 | 短整型， 范围 [-32767, 32767], -32768用于NULL |
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| 8 | TINYINT | 1 | 单字节整型，范围 [-127, 127], -128用于NULL |
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| 9 | BOOL | 1 | 布尔型，{true, false} |
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@ -106,7 +106,7 @@ TDengine缺省的时间戳是毫秒精度，但通过修改配置参数enableMic
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```mysql
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CREATE TABLE [IF NOT EXISTS] tb_name (timestamp_field_name TIMESTAMP, field1_name data_type1 [, field2_name data_type2 ...])
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```
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说明：1）表的第一个字段必须是TIMESTAMP，并且系统自动将其设为主键；2）表的每行长度不能超过64K字节；3）使用数据类型binary或nchar，需指定其最长的字节数，如binary(20)，表示20字节。
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说明：1）表的第一个字段必须是TIMESTAMP，并且系统自动将其设为主键；2）表的每行长度不能超过16K字节；3）使用数据类型binary或nchar，需指定其最长的字节数，如binary(20)，表示20字节。
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- **删除数据表**
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@ -39,7 +39,7 @@ The full list of data types is listed below. For string types of data, we will
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| 6 | DOUBLE | 8 | A standard nullable double float type with 15-16 significant digits and a range of [-1.7E308, 1.7E308] |
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| 7 | BOOL | 1 | A nullable boolean type, [**`true`**, **`false`**] |
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| 8 | TIMESTAMP | 8 | A nullable timestamp type with the same usage as the primary column timestamp |
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| 9 | BINARY(*M*) | *M* | A nullable string type whose length is *M*, error should be threw with exceeded chars, the maximum length of *M* is 65526, but as maximum row size is 64K bytes, the actual upper limit will generally less than 65526. This type of string only supports ASCii encoded chars. |
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| 9 | BINARY(*M*) | *M* | A nullable string type whose length is *M*, error should be threw with exceeded chars, the maximum length of *M* is 16374, but as maximum row size is 16K bytes, the actual upper limit will generally less than 16374. This type of string only supports ASCii encoded chars. |
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| 10 | NCHAR(*M*) | 4 * *M* | A nullable string type whose length is *M*, error should be threw with exceeded chars. The **`NCHAR`** type supports Unicode encoded chars. |
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All the keywords in a SQL statement are case-insensitive, but strings values are case-sensitive and must be quoted by a pair of `'` or `"`. To quote a `'` or a `"` , you can use the escape character `\`.
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@ -86,7 +86,7 @@ All the keywords in a SQL statement are case-insensitive, but strings values are
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1) The first column must be a `timestamp`, and the system will set it as the primary key.
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2) The record size is limited to 64k bytes
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2) The record size is limited to 16k bytes
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3) For `binary` or `nchar` data types, the length must be specified. For example, binary(20) means a binary data type with 20 bytes.
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@ -55,7 +55,7 @@ typedef enum {
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typedef struct taosField {
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char name[65];
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uint8_t type;
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uint16_t bytes;
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int16_t bytes;
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} TAOS_FIELD;
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#ifdef _TD_GO_DLL_
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@ -209,8 +209,8 @@ void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
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#define TSDB_MAX_SQL_SHOW_LEN 256
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#define TSDB_MAX_ALLOWED_SQL_LEN (8*1024*1024U) // sql length should be less than 8mb
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#define TSDB_MAX_BYTES_PER_ROW 65535
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#define TSDB_MAX_TAGS_LEN 65535
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#define TSDB_MAX_BYTES_PER_ROW 16384
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#define TSDB_MAX_TAGS_LEN 16384
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#define TSDB_MAX_TAGS 128
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#define TSDB_AUTH_LEN 16
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