sql anywhere 16 documentation

Name Name fieldCREATE TRIGGER employee_updateon employeeafter updateasbeginif (UPDATE name) BeginPrint ' prohibit modification of employee names! ' ROLLBACK TRANSACTION --roll back all operations before this node and proceed to the following statement EndEndVerifyUPDATE Employee SET name= ' XX 'Maintenance backup of the databaseUsing stored procedures to create a backup deviceEXEC sp_addumpdevice ' DISK ', ' comb ', ' E ' \data\comb. BAK 'Deleting a backup deviceEXEC sp_dropdevice ' comb 'To c

scsi0:0 in scsi0:0.ctkenabled Indicates that the SCSI device is assigned to the hard disk that is added to the virtual machine. A SCSI device is provided to each hard disk that is added to the virtual machine, as shown in scsi0:0, scsi0:1, or SCSI 1:1. CBT is enabled (or disabled) on each disk, respectively. Open the virtual electromechanical source. In the home directory of the virtual machine, verify that each disk that has CBT enabled also has a VMNAME-CTK.VMDK file. Backup Exec

One. Type comparisonbigint: Integer data from -2^63 (-9223372036854775808) to 2^63-1 (9223372036854775807) with a storage size of 8 bytes. One byte is 8 bits, so bigint has 64 bits.int: integer data from -2^31 (-2,147,483,648) to 2^31-1 (2,147,483,647) with a storage size of 4 bytes. int type, maximum 32-bit data can be storedsmallint: Integer data from -2^15 (-32,768) to 2^15-1 (32,767) with a storage size of 2 bytes. smallint is a 16-bitTinyint: Int

Symptom: Today, when I used powerdesigner 16 to design a database, the exported SQL statement was executed in SQL Server, which was suddenly miserable, crazy, and even intended to commit suicide !!! For an error like a question, see the following SQL statement: Create Table DBO. t_call_note (ID Int

\sqlserveragent login failed because the MSSQLServer instance was trying to connect with its SQL Server proxy account, but in the MySQLServer instance, The agent's account is not correct. So change the way subscribers are connected. Local subscriptions at the Subscriber are not viewable and can be viewed under the corresponding publication in local publishing at the publisher. Here, modify the way the Subscriber is connected, and check the synchroni

use of the functions described above:SELECT sysdate from DUAL;Output: 08/31/2014 5:25:34 PMSELECT to_char (current_date, ' dd-mm-yyyy HH:MI:SS ') from DUAL;Output: 31-08-2014 05:26:14SELECT add_months (Sysdate, 5) from DUAL;Output: 01/31/2014 5:26:31 PMSELECT Localtimestamp from DUAL;Output: 8/31/2014 5:26:55.347000 PMThree, interval data types and functionsThe following are the interval data types:　　INTERVAL years to month-it stores a period of time using the year and month datetime fieldsINTE

Tags: data file path seed suitable for production backup strong including synchronizationSummarizeFor our production environment to use automatic seed setting considerations: Because SQL Server 2016 and 2017 behave differently in disk file path requirements, 2017 can have data files deployed on different volumes on the primary and secondary replicas, so 2017 is more flexible and better suited to our environment. For the initialization of the

Ibatis commonly used 16 SQL statements blog classification: • ibatis column (1) input parameter is a single value Xml Code 1. 　　

@tno varchar (20)Set @tno = (select TNO from Deleted)--select TNO in the execution statement @tnoUpdate teacher set Tname= ' Zhang San ' where TNO = @tnoEndGoDelete from teacher where tno= ' 831 'deleted Store the deleted information, inserted store the changed information. Execution Delete statement when the tno= inside the trigger. TNO , but not @tnoCreate Trigger Tr_teacher_insertOn teacherFor insertAsBeginDECLARE @tno varchar (20)Set @tno = (select TNO from inserted)---delete from teacher w

Label:Powerdesign 16.0 generated script statement, inside Sql2000, the statement with the field notes executed with the following error: PowerDesigner cannot update or delete properties. The attribute ms_description of "xxx" does not exist. Mssqlsrv2000::script\objects\column\columncomment Modified Column colcomment Modify Column columncomment template path is Database, Edit current DBMS Form General tab under Script, Objects, C Olumncomment In fact, the default build statement has a judgment er

delphi Connection string for SQL Server 2011-10-11 16:07First, Delphi connect SQL ServerPut a connection component adoconnection, the other components tadodataset,tadoquery, such as connection point to adoconnection on it.You can double-click the ADOConnection to use its wizard. You can also use the following codefunction Openadoconn:boolean;BeginResult:=false;Tr

2014-10-15 10:06:48goal : Random ordering, using efficient SQL statement queries to get random data samples.anti-pattern : Using rand () random functionSELECT * from Employees as e ORDER by RAND () Limit 1Cons: Indexes cannot be used and are different and unpredictable each time they are selected. Perform full table traversal with very poor performance.how to recognize anti-patterns : May be anti-pattern when the following conditions occur1, in

inch (SELECT id2 from TestTable2)At this point the result is correct, if in the subquery we will column ID2 written id1, then what will be the situation?SELECT * fromtesttable1where id1 inch (select Id1 from TestTable2)I don't know if you notice anything. No, the surface is fine, we then run the sub-query belowSELECT Id1 from TestTable2Run the query alone, the result is actually wrong, and here we look at the table created by the column, ID1 is in the Table1 rather than in the Table2, so caused