Mysql中经常用来存储日期的数据类型有三种:Date、Datetime、Timestamp。 Date数据类型:用来存储没有时间的日期。Mysql获取和显示这个类型的格式为“YYYY-MM-DD”。支持的时间范围为“1000-00-00”到“9999-12-31”。 Datetime类型:存储既有日期又有时间的数据。存储和显示的格式为 “YYYY-MM-DD HH:MM:SS”。支持...
Posted by: Bob Field Date: August 07, 2006 08:24AM Booleans can be stored as TINYINTs (0=false, nonzero=true) or ENUM('False',True') -- I prefer the TINYINT option personally. Hash values, depends on how many bits and how represented. A numeric type like INT or BIGINT, a...
select date_format(date_add(cast(concat(year(CURRENT_DATE ),'-01-01')as date),INTERVAL t1000.id_no -1 day),'%W') as DAY FROM t1000 where t1000.id_no <= datediff(cast(concat(year(CURRENT_DATE)+ 1, '-01-01')AS DATE), cast(concat(year(CURRENT_DATE), '-01-01') AS DATE)...
整数类型：包括TINYINT、SMALLINT、MEDIUMINT、INT、BIGINT等，具有不同的取值范围。带小数点的数值类型：如FLOAT、DOUBLE、DECIMAL，用于存储小数，其中DECIMAL类型常用于存储货币值，如DECIMAL表示总共8位数字，其中小数点后2位。日期和时间数据类型：专门用于存储日期和时间值，包括DATE、TIME、DATETIME、TIME...
1 row in set (0,00 sec) TheDATE()function returns the date part of the date and time value. mysql> SELECT ADDDATE('2017-01-20', 8); +---+ | ADDDATE('2017-01-20', 8) | +---+ | 2017-01-28 | +---+ 1 row in set (0,00 sec) TheADDDATE(...
This entry is part 5 of 5 in the series MySQL DataTypes MySQL data types: CHAR, VARCHAR, INT, TEXT #Part-1 MySQL date and time DataTypes Overview: DATE, TIME, DATETIME, TIMESTAMP, YEAR & Zero Values #Part2.1 Automatically insert Current Date and Time in MySQL table #Part – 2.2 ...
A date and time combination. The supported range is'1000-01-01 00:00:00.000000'to'9999-12-31 23:59:59.499999'. MySQL displaysDATETIMEvalues in'YYYY-MM-DD hh:mm:ss[.fraction]'format, but permits assignment of values toDATETIMEcolumns using either strings or numbers. ...
Converting a Date String to a Date Type in MySQL without Creating a New Column Solution 1: It is recommended to utilize theSTR_TO_DATE()method. SELECT STR_TO_DATE(textdate, '%d/%m/%y') FROM MyTable... An alternative is to generate a new column that has the data type ofDATEand the...
DATE A date. The supported range is'1000-01-01'to'9999-12-31'. MySQL displaysDATEvalues in'YYYY-MM-DD'format, but permits assignment of values toDATEcolumns using either strings or numbers. DATETIME[(fsp)] A date and time combination. The supported range is'1000-01-01 00:00:00.000000...
Date: August 07, 2006 02:53AM I have to create a table in my db mysql to replicate the db present on my palm applicaton (that is write in C), so I have to converter the type data C -> Mysql C Mysql Boolean ? (maybe binary) ...