This method gets the string expression to check (the customer's city in this example) and the patterns to test against which is provided in the same way you'd write a LIKE clause in SQL. Using the above query generated the required SQL statement: SELECT CustomerID, CompanyName, ... FROM...
5. The IN Operator *IN: 同一系列值比较一个属性 上下两种筛选结果一样 *可以加NOT 6. The BETWEEN Operator *范围值包括临界值 上下两图筛选结果等效。用between的结果更加简洁 7. The LIKE Operator *LIKE: 模糊查询 *%:表示任意字符数(模糊查询) 查询结果:B开头的姓(大小写不影响) 表示b的前后可以有任...
TheLIKEoperator is used in aWHEREclause to search for a specified pattern in a column. There are two wildcards often used in conjunction with theLIKEoperator: The percent sign%represents zero, one, or multiple characters The underscore sign_represents one, single character ...
There are some ways to write a Linq query that reaults in using Like Operator in the SQL statement: 1. Using String.StartsWith or String.Endswith Writing the following query: var query =from cin ctx.Customers where c.City.StartsWith("Lo") select c; will generate this SQL statement: SEL...
();}// 创建Statement对象Statementstatement=null;try{statement=connection.createStatement();}catch(SQLExceptione){e.printStackTrace();}// 执行SQL查询语句Stringsql="SELECT * FROM users WHERE username LIKE '%tom%'";ResultSetresultSet=null;try{resultSet=statement.executeQuery(sql);}catch(SQLExceptione...
WHERE City LIKE 'sa%' The result-set will look like this: Next, we want to select the persons living in a city that contains the pattern "nes" from the "Persons" table. We use the following SELECT statement: SELECT * FROM Persons ...
WHERE column_name operator value; 运算符可以在 WHERE 子句中使用 (4)AND & OR 运算符 如果第一个条件和第二个条件都成立,则 AND 运算符显示一条记录。 如果第一个条件和第二个条件中只要有一个成立,则 OR 运算符显示一条记录。 SELECT * FROM Websites ...
(1) The following SQL statement deletes the customer "Alfreds Futterkiste" from the "Customers" table: DELETE FROM Customers WHERE CustomerName='Alfreds Futterkiste';是把整个row删掉了 Delete all records: It is possible to delete all rows in a table without deleting the table. This means tha...
avoid insertion of duplicate entries in a BULK INSERT statement Bad performance of EXCEPT operator Basic - select with fixed values - invert columns to rows Basic CTE query, get full path of something recursive BCP Error - Copy direction must be either 'in', 'out' or 'format'. BCP Export...
Like "Sm*") .In an expression, you can use the Like operator to compare a field value to a string expression. For example, if you enterExpand table Copy Like "C*" in an SQL query, the query returns all field values beginning with the letter C. In a parameter query, you can pr...