BREAK— ExitWHILEloop run. THROW— Raise errors and potentially return control to the calling stack. CONTINUE— Restart aWHILEloop. TRY… CATCH— Error handling. For more information, seeError Handling. GOTO
WHILE1=1--forever until there is nothing more to doBEGINSELECT@start=PATINDEX('%[^a-zA-Z]["]%',@jsoncollateSQL_Latin1_General_CP850_Bin);--next delimited stringIF@start=0BREAK--no more so drop through the WHILE loopIFSUBSTRING(@json,@start+1,1)='"'BEGIN--Delimited NameSET@start...
1)数据类型 2)变量声明、赋值与引用 3)函数与操作符 字符串 日期 空值判断与处理 转换 语句 4)游标 5)触发器 6)过程 7)数据字典/系统表 8)SQL 9)全局变量 10)命令行查询工具 ISQL SQL PLUS 读取、执行SQL文件 Isql –Usa –Ppass –Shost –ifile sqlplus [-s] user/pass@db -@filename 11)杂项...
When creating a natively compiled stored procedure, rather than using a cursor, use set-based logic or a WHILE loop. Feature Non-constant parameter defaults When using default values with parameters on natively compiled stored procedures, the values must be constants. Remove any wildcards from the...
/* These will be set each loop */ DECLARE @columnLength AS NVARCHAR(10) DECLARE @newDataType AS NVARCHAR(20); /*setup cursor*/ DECLARE @columnName NVARCHAR(100); DECLARE @dataType NVARCHAR(100); DECLARE @characterMaximumLength NVARCHAR(10); DECLARE @ordinalPosition INT; DECLARE @numericPrec...
Fast forward read-only cursors are easily replaced with a looping construct. The following code is a simple example. This code example updates the statistics for every table in the database. By iterating over the tables in the loop, each command executes in sequence. ...
Here is an example for the real literal visitor method: public override void ExplicitVisit(RealLiteral node) { node.Value = “0.5E-2”; base.ExplicitVisit(node); } Visitor invocation For performance reasons we will call the visitor with the Parallel.ForEach loop which makes efficient use of...
1)Loop …exit;…end loop; 2)loop…exit when…end loop; 3)WHILE condition LOOP sequence_of_statements; EXIT WHEN boolean_expression; END LOOP; 3)for…in [reverse]…loop … end loop; GOTO GOTO label … label: … GOTO label; … <> … Exits unconditionally RETURN Return; Sets a delay ...
-- Create the table.CREATETABLETestTable (colaINT, colbCHAR(3)); GOSETNOCOUNTON; GO-- Declare the variable to be used.DECLARE@MyCounterINT;-- Initialize the variable.SET@MyCounter =0;-- Test the variable to see if the loop is finished.WHILE (@MyCounter < 26)BEGIN;-- Insert a row...
Can we alias name for temp table Can we creating index on non unique value columns on temporary tables Can we do MAX inside nested CASE Statement? Can we generate pipe delimited column through SQL query Can we optimise While Loop in sql server for large number of data? Can we pass paramet...