ADDDATE() 将时间间隔添加到日期上 ADDTIME() 时间数值相加 CONVERT_TZ() 转换时区 CURDATE() 返回当前日期 CURRENT_DATE(), CURRENT_DATE 与CURDATE() 同义 CURRENT_TIME(), CURRENT_TIME 与CURTIME() 同义 CURRENT_TIMESTAMP(), CURRENT_TIMESTAMP 与NOW() 同义 CURTIME() 返回当前时间 DATE() 从日期或日...
ADDDATE()将时间间隔添加到日期上 ADDTIME()时间数值相加 CONVERT_TZ()转换时区 CURDATE()返回当前日期 CURRENT_DATE(), CURRENT_DATE与 CURDATE() 同义 CURRENT_TIME(), CURRENT_TIME与 CURTIME() 同义 CURRENT_TIMESTAMP(), CURRENT_TIMESTAMP与 NOW() 同义 ...
LogAll.dt_Time >= STR_TO_DATE( CONCAT( DATE_FORMAT( DATE_ADD( NOW( 6 ), INTERVAL - 1 MONTH ), '%Y-%m' ), '-01' ), '%Y-%m-%d' )) AND ( LogAll.dt_Time < STR_TO_DATE( CONCAT( DATE_FORMAT( DATE_ADD( NOW( 6 ), INTERVAL 1 MONTH ), '%Y-%m' ), '-01' ), '%Y-...
如果SQL 模式的NO_ZERO_DATE被禁用,TiDB 允许DATE和DATETIME列中的月份或日期为零。例如,2009-00-00或2009-01-00。如果使用函数计算这种日期类型,例如使用DATE_SUB()或DATE_ADD()函数,计算结果可能不正确。 默认情况下,TiDB 启用NO_ZERO_DATESQL 模式。该模式可以避免存储像0000-00-00这样的零值。
各种函数比如常用的date函数,date_add,date_sub等等 错误的方式: explain select * from tb_dxl_test where date(update_date)='2016-10-06'; (3)运算 比如select * from t1 where start-end=10 (4)Like ‘%dai’ / like ‘%dai%’ ,即最左的模糊匹配 ...
WHERE s.time>=adddate(now(),INTERVAL -1 DAY) AND s.time<=now() AND s.Is_internal =0 -- AND UPPER(s.query) NOT LIKE '%ANALYZE TABLE%' -- AND UPPER(s.query) NOT LIKE '%DBEAVER%' -- AND UPPER(s.query) NOT LIKE '%ADD INDEX%' ...
SELECT /*+ set_var(tidb_executor_concurrency=20) */ l_orderkey, SUM( l_extendedprice * (1 - l_discount) ) AS revenue, o_orderdate, o_shippriority FROM customer, orders, lineitem WHERE c_mktsegment = 'BUILDING' AND c_custkey = o_custkey AND l_orderkey = o_orderkey AND o_ord...
interval -> date_add 或者 datediff extract epoch from -> unix_timestimp unnest -> union all json语法:json->> 'username' to json ->> '$.username' position in -> locate generate_series -> union greatest & least -> greatest/least + coalesce ...
SELECT /*+ set_var(tidb_executor_concurrency=20) */ l_orderkey, SUM( l_extendedprice * (1 - l_discount) ) AS revenue, o_orderdate, o_shippriority FROM customer, orders, lineitem WHERE c_mktsegment = 'BUILDING' AND c_custkey = o_custkey AND l_orderkey = o_orderkey AND o_ord...
s.time>=adddate(now(),INTERVAL -1 DAY) AND s.time<=now() AND s.Is_internal =0 -- AND UPPER(s.query) NOT LIKE '%ANALYZE TABLE%' -- AND UPPER(s.query) NOT LIKE '%DBEAVER%' -- AND UPPER(s.query) NOT LIKE '%ADD INDEX%' -- AND UPPER(s.query) NOT LIKE '%CREATE INDEX%...