--SQL SERVER生成测试环境: Create database Test; go USE [Test] GO if OBJECT_ID('Tab','U') is not null drop table Tab go CREATE TABLE [dbo].[Tab]( [ID] [int] NOT NULL CONSTRAINT [PK_Tab] PRIMARY KEY CLUSTERED , [name] [sysname] NOT NULL ) --打开Visual Studio—创
Text Literals 文本 Use the text literal notation to specify values whenever string appears in the syntax of expressions, conditions, SQL functions, and SQL statements in other parts of this reference. This reference uses the terms text literal, charact
from_unixtime(unix_timestamp, format) 把时间戳转化为指定的格式 as: select from_unixtime(addTime, '%Y-%m-%d %h:%i:%s') as datetime from table1 unix_timestamp([datetime]) 把日期时间转化为时间戳 as: select from_unixtime([addDay]) as unixtime from table1 case(value as type) co