The select query in the definition of theexample t-sql cursorreturns the example record set that will be used for emailing purposes. After we declare and open theexample sql cursor, byfetch nextmethod in thesample cursorsource rows, we will loop and send email in each loop with in the rec...
Here is aSQL cursor examplecode created forloopingthrough a list of records as a result of a select query, which enables the sql developer to execute a stored procedure for each row in the cursor which use the values fetched by thecursoras the input arguments. Thesample cursoris developed o...
DECLARE E1cursor cursor /* 声明游标,默认为FORWARD_ONLY游标 */ FOR SELECT * FROM c_example OPEN E1cursor /* 打开游标 */ FETCH NEXT from E1cursor /* 读取第1行数据*/ WHILE @@FETCH_STATUS = 0 /* 用WHILE循环控制游标活动 */ BEGIN FETCH NEXT from E1cursor /* 在循环体内将读取其余行数据 ...
DECLARE E1cursor cursor /* 声明游标,默认为FORWARD_ONLY游标 */ FOR Select * FROM c_example OPEN E1cursor /* 打开游标 */ FETCH NEXT from E1cursor /* 读取第1行数据*/ WHILE @@FETCH_STATUS = 0 /* 用WHILE循环控制游标活动 */ BEGIN FETCH NEXT from E1cursor /* 在循环体内将读取其余行数据 ...
For example, fetch the last row from the cursor into the declared variables. DO $$ DECLARE c3 CURSOR FOR SELECT id, name FROM employees; emp_id integer; emp_name varchar; BEGIN OPEN c3; FETCH LAST FROM c3 INTO emp_id, emp_name; END$$; Summary Featur...
● 数据操纵语言(DML,Data Manipulation Language):用来操纵数据库中的数据的命令,如SELECT、INSERT、UPDATE、DELETE、CURSOR等。● 数据控制语言(DCL,Data Co ntrol Langu age):用来控制数据库组件的存取许可、存取权限等的命令,如GRANT\REVOKE等。● 流程控制语言(Flow Control Language):用于设计应用程序的语句,如...
FETCH [NEXT | PRIOR | FIRST | LAST | ABSOLUTE <Value> | RELATIVE <Value>] FROM <Cursor Name> INTO <Variable List>; Examples The following example processes data in a cursor. DECLARE MyCursor CURSOR FOR SELECT * FROM Table1 AS T1 INNER JOIN Table2 AS T2 ON...
资料指标变数新增了一个 cursor 资料型别。关於指标的相关讯息,请参考《线上丛书》里「Cursors」这个主题。 新增了三种新的 Unicode 资料型别-nchar、nvarchar 以及 ntext。每一个 Unicode 字元使用两个位元组,并支援所有国际字元。 新增了一种 uniqueidentifier 资料型别,用於储存通用唯一识别码(GUID)。 字元资料...
Several functions fall under the umbrella of scalar functions, including configuration functions, conversion functions, cursor functions, data and time data types and functions, graph functions, JSON functions, logical functions, mathematical functions, metadata functions, security functions, string functions...
SQL Server T-SQL bug? CURSOR does not respect TABLESAMPLEThis behaviour isn't documented on the...