DROP VARIABLE DROP VIEW DROP VOLUME REFRESH FOREIGN(CATALOG、SCHEMA或 TABLE) REFRESH(MATERIALIZED VIEW 或 STREAMING TABLE) REPAIR TABLE TRUNCATE TABLE UNDROP TABLE USE CATALOG USE DATABASE USE SCHEMA ADD ARCHIVE ADD FILE ADD JAR LIST ARCHIVE ...
算术运算符:+、-、*、/、一元运算符 - 逻辑运算符:AND、OR、NOT 比较运算符:<、>、<=、>=、<>、LIKE、IS NULL、IS NOT NULL在基数估计过程中,查询优化器不计算其他任何函数或运算符。编译时表达式计算的示例以下面的存储过程为例:SQL 复制 USE AdventureWorks2022; GO CREATE PROCEDURE MyProc( @d ...
completion Generate the autocompletion script for the specified shell config Modify sqlconfig files using subcommands like "sqlcmd config use-context mssql" create Install/Create SQL Server, Azure SQL, and Tools delete Uninstall/Delete the current context help Help about any command open Open tools...
在这种情况下,查询级别提示 (USE HINT) 始终优先。 USE HINT如果与另一个查询提示冲突,或查询级别(如 byQUERYTRACEON)启用的跟踪标志,则尝试执行查询时,SQL Server 将生成错误。USE PLAN N'xml_plan'强制查询优化器对由xml_plan指定的查询使用现有查询计划。 USE PLAN不能使用INSERT、UPDATE或MERGEDELETE语句指定...
USEAdventureWorks2022; GODECLARE@findVARCHAR(30);/* Also allowed: DECLARE @find VARCHAR(30) = 'Man%'; */SET@find ='Man%';SELECTp.LastName, p.FirstName, ph.PhoneNumberFROMPerson.PersonASpJOINPerson.PersonPhoneASphONp.BusinessEntityID = ph.BusinessEntityIDWHERELastNameLIKE@find; ...
-- Uses AdventureWorksSELECTLastName, FirstNameFROMPerson.PersonWHERELastNameLIKE'Zh[ae]ng'ORDERBYLastNameASC, FirstNameASC; GO Examples: Azure Synapse Analytics and Analytics Platform System (PDW) E. Use LIKE with the%wildcard character
参数的默认值。 如果为参数定义了默认值,则无需指定此参数的值即可执行过程。 默认值必须是常量或 NULL。 该常量值可以采用通配符的形式,这使其可以在将该参数传递到过程时使用 LIKE 关键字。只有CLR 过程的默认值记录在 sys.parameters.default 列中。 对于 Transact-SQL 过程参数,该列将为 NULL。
I cannot get the WHERE statement to work correctly unless I use a literal with the LIKE. I want to use a working storage data name so that I can vary the WHERE statement. Example that works: WHERE DSNAME LIKE 'ABC%' Example that does not work: WHERE
Concatenate a string to use after the AS statement Concatenate distinct values to variable concatenate numbers (not add them) CONCATENATE ROW_NUMBER WITH LEADING ZERO FOR MAXIMUM OF 15 CHARACTERS Concatenate two columns using a trigger Concatenated Stored Procedure parameter value concatenating in the st...
SQL LIKE command while using a variable sql like not working for me with % SQL MIN and MAX relations in SELECT CASE Sql Order by not working with decimal/money type columns SQL Order by nvarchar but numeric SQL Pivot replacing the NUll values with 0 Sql querry to check column value is ...