sql like variable

Grammar:identifier [CONSTANT] datatype [not NULL] [: = | DEFAULT Expr]Identifier: Used to specify the name of a variable or constant.CONSTANT: Used to specify constants. When you define a constant, you must specify its initial value, and its value

*sql optimization based on ORACLE11GR2 reading notes * Third, cursor in OracleThe cursor in Oracle is a vector of SQL parsing and execution in an Oracle database and is a data structure for C (Oracle is written in C).There are two types of cursor in

For more information about bugs fixed in SQL Server 2000 Service Pack 4, click the following article number to view the article in the Microsoft Knowledge Base:314128 FIX: When an RPC call is performed, Access with conflicting values includes an

The pain and suffering of SQL analysisMany DBAs have some questions about the SQL statements on the line, and it's good to look at the cost of executing the plan, but there's a big difference in the actual execution.For a large SQL statement,

Oracle SQL * plus is a client tool that interacts with oracle. In SQL * plus, you can run the SQL * plus command and the SQL * plus statement. The DML, DDL, and DCL statements we usually call are SQL * plus statements. After they are executed, they

Data | condition Liketransact-sql reference like Determines whether the given string matches the specified pattern. Patterns can contain regular characters and wildcard characters. During pattern matching, regular characters must exactly match the

Oracle SQL * plus is a client tool that interacts with oracle. In SQL * plus, you can run the SQL * plus command and the SQL * plus statement. The DML, DDL, and DCL statements we usually call are SQL * plus statements. After they are executed,

OverviewVariables are an essential part of a language, and of course, the same is true for T-SQL. Variables are often seldom used in simple queries, but they are an essential part of complex queries or stored procedures.Types of variablesIn T-SQL,

Like Determines whether the specified string matches the specified pattern. The mode can contain regular and wildcard characters. During pattern matching, regular characters must match exactly the characters specified in the string. However, any

Like turn from http://blog.csdn.net/wei0527/article/details/4086131Determines whether the given string matches the specified pattern. A pattern can contain regular characters and wildcard characters. During pattern matching, regular characters must