触发器是一种数据库对象,可以在特定的数据库操作(如INSERT、UPDATE或DELETE)发生时自动触发执行一段SQL代码。 示例代码如下: CREATETABLEmy_table(idINTPRIMARYKEYAUTO_INCREMENT,dataVARCHAR(255),timestampDATETIME);DELIMITER//CREATETRIGGERadd_timestamp BEFOREINSERTONmy_tableFOR EACH ROWBEGINSETNEW.timestamp=NOW(...
在MySQL中,datetime值的格式为YYYY-MM-DD HH:MM:SS,其中YYYY表示年,MM表示月,DD表示日,HH表示小时,MM表示分钟,SS表示秒。 要插入datetime值到数据库中,可以使用INSERT INTO语句。以下是一个示例: INSERTINTOtable_name(column1,column2,datetime_column)VALUES(value1,value2,'YYYY-MM-DD HH:MM:SS'); 1. ...
insert intonlccmsDb.attendancevalues(3,2,'王老师的课堂','第二教学楼',123.121212,125.112212,3,'2021-2-2 13:12:21'); 注意最后一个字段,2021-2-3 12:12:21,用单引号括起来,如果你的数据库字段为datetime便可自动转换
mysql>createtabletime(->reg1date,->reg2time,->reg3 datetime,->reg4timestampdefaultcurrent_timestamponupdatecurrent_timestamp,->reg5year); #createtabletime(reg1date,reg2time,reg3 datetime,reg4timestampdefaultcurrent_timestamponupdatecurrent_timestamp,reg5year); 插入数据 mysql>insertintotimevalues...
DECLARE @MyTableVar table( LocationID int NOT NULL, CostRate smallmoney NOT NULL, NewCostRate AS CostRate * 1.5, ModifiedDate datetime); -- Insert values into the table variable. INSERT INTO @MyTableVar (LocationID, CostRate, ModifiedDate) SELECT LocationID, CostRate, GETDATE() FROM Pr...
insert into table(datetime) values('2012-12-12 12:12:12');另外写成 insert into table(datetime) values("2012-12-12")也可以，系统会转换成“2012-12-12 00:00:00”insert
BEGIN TRANSACTION /*Create partition function*/ CREATE PARTITION FUNCTION [fn_Partition_DepartmentHistory_By_ValidTo] (DATETIME2(7)) AS RANGE LEFT FOR VALUES ( N'2023-09-30T23:59:59.999', N'2023-10-31T23:59:59.999', N'2023-11-30T23:59:59.99...
[Location] ADD ValidFrom DATETIME2 GENERATED ALWAYS AS ROW START HIDDEN CONSTRAINT DFValidFrom DEFAULT DATEADD (SECOND, -1, SYSUTCDATETIME()), ValidTo DATETIME2 GENERATED ALWAYS AS ROW END HIDDEN CONSTRAINT DFValidTo DEFAULT '9999.12.31 23:59:59.99', PERIOD FOR SYSTEM_TIME(ValidFrom, Valid...
Description forINSERT INTOtable-nameorview-name Identifies the object of the INSERT statement. The name must identify a table or view that exists at the current server. The name must not identify: An auxiliary table A catalog table A directory table ...
The current timestamp value is used. Is nullable. A null value is used. Is a computed column. The calculated value is used. column_list must be used when explicit values are inserted into an identity column, and the SET IDENTITY_INSERT option must be ON for the table. OUTPUT Clause ...