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• Take advantage of the fact that columns have default values. Insert values explicitly【ɪkˈsplɪsətli明确地;明白地;】 only when the value to be inserted differs from the default. This reduces the parsing that MySQL must do and improves the insert speed. 3.2 Optimizing UPDATE St...
This behavior is different from using parameters with default values in stored procedures in which omitting the parameter also implies the default value. However, the DEFAULT keyword isn't required when invoking a scalar function by using the EXECUTE statement. READONLY Indicates that the parameter ...
In a Real Application Clusters environment, this setting causes Oracle to perform a checkpoint only for the thread of redo log file groups for the instance from which you issue the statement. CHECK DATAFILES Clause In a distributed database system, such as a Real Application Clusters environme...
Rerun your statement when there are fewer active users or ask the system administrator to check the SQL Server lock and memory configuration. 备注 在出现 MSSQLSERVER_1204 错误时,它将停止处理当前语句并导致活动事务回滚。 如果重启数据库服务,则回滚本身可能会阻止用户或导致较长的数据库恢复时间。 ...
ST_DIFFERENT_SRID_VALUES ST_INVALID_ARGUMENT ST_INVALID_ARGUMENT_TYPE ST_INVALID_CRS_TRANSFORMATION_ERROR ST_INVALID_ENDIANNESS_VALUE ST_INVALID_GEOHASH_VALUE ST_INVALID_INDEX_VALUE ST_INVALID_PRECISION_VALUE ST_INVALID_SRID_VALUE TABLE_VALUED_FUNCTION_REQUIRED_METADATA_INCOMPATIBLE_WITH_CALL TABLE_VALU...
You can omit this clause only if the file does not already exist. If you omit this clause, Oracle creates the file. Note: Whenever Oracle uses an existing file, the file's previous contents are lost. ExamplesThe following statement creates a database named PAYABLE that has two redo log ...
String sql3 = SqlBuilder.insertIgnore("table_a","column1","column2").values().addValue("cc1","cc2").addValue("c1","c2").build();// 指定插入字段 "replace into table_a(column1, column2) values('c1', 'c2'), ('cc1', 'cc2')"String sql4 = SqlBuilder.replaceInto("table_a"...
You can also mail to: SQL Server Privacy Statement Microsoft Corporation, One Microsoft Way, Redmond, Washington 98052 Specific Features: Customer Experience Improvement Program What This Feature Does: The Customer Experience Improvement Program (CEIP) feature of SQL Server Business Intelligence Development...
Represents a Transact-SQL statement or stored procedure to execute against a SQL Server database. This class cannot be inherited.