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doc: default compress algorithm

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Shengliang Guan 2024-12-09 19:12:11 +08:00
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docs/en/14-reference/03-taos-sql/32-compress.md
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@ -29,12 +29,13 @@ In this document, it specifically refers to the internal levels of the second-le
- Default compression algorithms list and applicable range for each data type - Default compression algorithms list and applicable range for each data type
| Data Type |Available Encoding Algorithms | Default Encoding Algorithm | Available Compression Algorithms | Default Compression Algorithm | Default Compression Level | | Data Type |Available Encoding Algorithms | Default Encoding Algorithm | Available Compression Algorithms | Default Compression Algorithm | Default Compression Level |
| :-----------:|:----------:|:-------:|:-------:|:----------:|:----:| |:------------------------------------:|:----------------:|:-----------:|:--------------------:|:----:|:------:|
| tinyint/untinyint/smallint/usmallint/int/uint | simple8b| simple8b | lz4/zlib/zstd/xz| lz4 | medium| | int/uint | simple8b | simple8b | lz4/zlib/zstd/xz | lz4 | medium |
| tinyint/untinyint/smallint/usmallint | simple8b | simple8b | lz4/zlib/zstd/xz | zlib | medium |
| bigint/ubigint/timestamp | simple8b/delta-i | delta-i | lz4/zlib/zstd/xz | lz4 | medium | | bigint/ubigint/timestamp | simple8b/delta-i | delta-i | lz4/zlib/zstd/xz | lz4 | medium |
| float/double | delta-d | delta-d | lz4/zlib/zstd/xz/tsz | lz4 | medium | | float/double | delta-d | delta-d | lz4/zlib/zstd/xz/tsz | lz4 | medium |
|binary/nchar| disabled| disabled|lz4/zlib/zstd/xz| lz4| medium| | binary/nchar | disabled | disabled | lz4/zlib/zstd/xz | zstd | medium |
|bool| bit-packing| bit-packing| lz4/zlib/zstd/xz| lz4| medium| | bool | bit-packing | bit-packing | lz4/zlib/zstd/xz | zstd | medium |
## SQL Syntax ## SQL Syntax