sql check if temp table exists

Code directly. This is useful to everyone!Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> -- Determine whether [testdb] exists If exists (select 1 from Master .. sysdatabases where name = 'testdb ') Print 'testdb exist' Else Print 'testdb does not exist' -- Determine whether the table [testtb] existsIf

Label:Previously, when writing query statements habitually, the query condition was judged by "=". When writing a program today, the query suddenly reported an error: Data type text and varchar are incompatible in the equal to operator. Looking at the database discovery, where a property (for example, name:) is of type text, then the query condition Name= ' Zhang San ' will give an error. Find related data A property of the text type cannot be judged equal with "=" because it is not supported an

Create table # staff (id int)Insert into # staff values (9)If exists (select 1 from # staff where id = 9)Print ('pass ')ElsePrint ('fail ')Drop table # staffChange the value of where id = 9 to another value and output fail. You can understand the other values. 1 is not a field of the temporary table # class, but a tag

If not exists (select * From DBO. sysobjects where id = object_id (N 'print _ billformat') and objectproperty (ID, N 'isusertable') = 1)Begin/* Print _ User format */Create Table print_billformat(Billid varchar (50) not null,Printformat text null,Formatid varchar (100) not null,Orgid varchar (50))End /* Print _ premade format */If not exists (select * From DBO.

-- Determine whether [TestDB] exists If exists (select 1 from master .. sysdatabases where name = 'testdb ') Print 'testdb exist' Else Print 'testdb does not exist' -- Determine whether the table [TestTb] existsIf exists (select * from TestDB .. syscolumns where id = object_id ('testdb. dbo. testtb '))Print '

Tags: style blog color io data div SP CTI Log--determine if the database existsif exists(Select * fromsys.databaseswhereName= 'Database name')Drop Database [Database name]--determine if a table existsif exists(Select * fromsysobjectswhereId= object_id(N'[table name]') and ObjectProperty(ID, N'isusertable')= 1)Drop

This article describes in detail which table of a field is queried through MySql. The specific SQL statement is as follows. If you are interested, refer, we hope to help you copy the code as follows: SELECTTABLE_SCHEMA, TABLE_NAMEFROMinformation_schema. 'columns 'WHERECOLUMN _ NAMEcol1col1 is child This article gives you a detailed description of the table where

How to determine if a known table exists in the library today, to help him solve this problem, the code for the usual reference DAO to do a module: Function fExistTable(strTableName As String) As IntegerDim db As DatabaseDim i As Integer　　　　Set db = DBEngine.Workspaces(0).Databases(0)　　　　fExistTable = False　　db.TableDefs.Refresh　　For i = 0 To db.TableDefs.Count - 1　　　　If strTableName = db.TableDefs(i).Name

Label:This is a five-table joint check, if this is not obvious, then add the speech This makes it obvious that the This delivery time and place, are a one-to-many, then this menu is many to many, in fact, for the veteran, there is no big deal, but for the novice, I hope it can be a little help, this is written with MyBatis First of all, we give the SQL to co

Label:How SQL determines whether a function stored procedure exists(2010-12-03 10:08:57)reproduced Below you introduce SQL under the use of a variety of resources to determine the existence of the code, the need for friends can refer to, I hope you learn SQL functions and databases c

TABLEdbo. Orders; CREATE TABLEdbo. Orders (OrderIDINT not NULL, EmpidINT not NULL, CustIDVARCHAR(Ten) not NULL, Orderts DATETIME2 not NULL, QtyINT not NULL, CONSTRAINTPk_ordersPRIMARY KEY(OrderID)); /** Add PRIMARY KEY constraint **/ ALTER TABLEDbo. OrdersADD CONSTRAINTFk_orders_employeesFOREIGN KEY(Empid)REFERENCESdbo. Employees (Empid); /** Add default constraint **/ ALTER TABLEDbo. OrdersADD CONSTRAINTDft_orders_ordertsDEFAULT(Sysdatetime ()) forOrderts; /** Delete

1. Check the number of tables in the specified user table in the SQL statement of Oracle (provided by Koko) Bytes ------------------------------------------------------------------------------------------------------------ Syntax: Select * From dba_tables t where T. Owner = 'user id '; Dba_tables: a dba with Permissions User ID: Oracle user name

1 determine if the database exists if exists (SELECT * from sys.databases WHERE name = ' database name ')Drop DB [Database name] 2 Determine if the table exists if exists (select * from sysobjects where id = object_id (n ' [table