WHILE(@@FETCH_STATUS=0)-- Loop through all tables in the databaseBEGININSERT#RESULTEXECUTEA_Search_StringInGivenTable@SearchString,@Table_Schema,@Table_Name;FETCHcurAllTablesINTO@Table_Schema,@Table_Name;END;-- whileCLOSEcurAllTables;DEALLOCATEcurAllTables;-- Return resultsSELECT*FROM#RESULTORDERB...
DECLARE @MyNumber decimal(10,2); SET @MyNumber = +123.45; SELECT @MyNumber; 語言所包含的語法元素⑦ 要特別注意的是 ^ 常被人誤認為次方運算子,但 T-SQL 需要用 Power 函數,例如,2 的 3 次方要寫 作 Power(2,3),而非 2^3.2^3 是二進位的 10 和 11 做 XOR,變成 01 了. 125 雖然加號...
Stores a database-wide unique number that gets updated every time a row gets updated 注意:将会在后续版本中删除该类型SQL_VARIANT Stores values of various SQL Server-supported data types except text, ntext, and timestamp 可存储多种数据类型(除TEXT、TIMESTAMP)...
Because database store data in a persistent way, the tables in a database need some way to enforce various types of validations of the data no matter how the data might be changed from external sources. These types of validations go beyound just data types; the cover which columns should h...
(SELECT*FROMsys.types stJOINsys.schemas ssONst.schema_id=ss.schema_idWHEREst.name=N'OrderDetail$Udt'ANDss.name=N'dbo')DROPTYPE[dbo].[OrderDetail$Udt]GOCREATETYPEOrderDetail$UdtASTABLE(OrderId int,LineNumber int primarykey(OrderId,LineNumber),ProductId int,Quantity int,Price money)GO---IF...
Exact-number data types that use integer data. To save space in the database, use the smallest data type that can reliably contain all possible values. For example, tinyint would be sufficient for a person's age because no one lives to be more than 255 years old. But tinyint would ...
抛去这些数据库本身的特性带来的震撼之外,T-SQL本身也在紧跟 SQL 标准发展。当我开始在项目中使用,OffSET ... Rows Fetch Only...Rows, 身边的朋友们还在放肆的大笑,这么风骚的代码,也只有你黄师傅才敢写。分页不就是 RowNumber 嘛,搞那么复杂。
Ranking functions are non-deterministic. When you use a ranking function, SQL Server will return a ranking value for every row within a partition. T-SQL ranking functions include: RANK, NTILE, DENSE_RANK, and ROW_NUMBER. Some rows may receive the same value as other rows, depending on whic...
Approximate-number data types for use with floating point numeric data. Floating point data is approximate; therefore, not all values in the data type range can be represented exactly. The ISO synonym for real is float(24).Transact-SQL syntax conventionsSyntax...
2 number 3 true/false 4 array 5 物件(object) 只會傳回第一層的屬性。 若 JSON 文字的格式不正確,陳述式便會失敗。 當您呼叫 OPENJSON 且在 WITH 子句中指定明確的結構描述時,函式會傳回使用您在 WITH 子句中定義之結構描述的資料表。 注意 Key、Value 和Type 資料行只會在您搭配預設結構描述使用 OPENJ...