TDengine函數(shù)大全
詳情見具體頁面,點擊進入。
1.數(shù)學函數(shù)
- ABS
- ACOS
- ASIN
- ATAN
- CEIL
- COS
- FLOOR
- LOG
- POW
- ROUND
- SIN
- SQRT
- TAN
2.字符串函數(shù)
- CHAR_LENGTH
- CONCAT
- CONCAT_WS
- LENGTH
- LOWER
- LTRIM
- RTRIM
- SUBSTR
- UPPER
3.轉換函數(shù)
- CAST TO_ISO8601
- TO_UNIXTIMESTAMP
- TO_JSON
4.時間和日期函數(shù)
- NOW
- TIMEDIFF
- TIMETRUNCATE
- TIMEZONE
- TODAY
5.聚合函數(shù)
- APERCENTILE
- AVG
- COUNT
- ELAPSED
- LEASTSQUARES
- SPREAD
- STDDEV
- SUM
- HYPERLOGLOG
- HISTOGRAM
- PERCENTILE
6.選擇函數(shù)
- BOTTOM
- FIRST
- INTERP
- LAST
- LAST_ROW
- MAX
- MIN
- MODE
- SAMPLE
- TAIL
- TOP
- UNIQUE
7.時序數(shù)據(jù)庫特有函數(shù)文章來源:http://www.zghlxwxcb.cn/news/detail-691032.html
- CSUM
- DERIVATIVE
- DIFF
- IRATE
- MAVG
- STATECOUNT
- STATEDURATION
- TWA
8.系統(tǒng)函數(shù)文章來源地址http://www.zghlxwxcb.cn/news/detail-691032.html
- DATABASE
- CLIENT_VERSION
- SERVER_VERSION
- SERVER_STATUS
- CURRENT_USER
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