1.环境说明 1.1源端SQLSserver 版本 IP 端口 Microsoft SQL Server 2017 192.168.140.160 1433 1.2目标端GreatSQL 版本 IP 端口 GreatSQL-8.0.32 192.168.139.86 3308 2.安装环境 2.1安
1229 Disables all lock partitioning regardless of the number of CPUs. By default, SQL Server enables lock partitioning when a server has 16 or more CPUs, to improve the scalability characteristics of larger systems. For more information on lock partitioning, see the Transaction Locking and Row Ver...
DECLARE @log_reached_disk_size BIT = 0 SELECT name LogName, physical_name, CONVERT(bigint, size)*8/1024 LogFile_Size_MB, volume_mount_point, available_bytes/1024/1024 Available_Disk_space_MB, (CONVERT(bigint, size)*8.0/1024)/(available_bytes/1024/1024 )*100 file_size_as_...
在SQL Server中,我们可以使用CAST或CONVERT函数将百分比字符串转换为数字。假设我们有一个名为percentage的列,其中存储了百分比字符串,我们可以通过以下代码将其转换为数字: SELECTCAST(REPLACE(percentage,'%','')ASFLOAT)/100ASpercentage_numberFROMyour_table; 1. 2. 上面的代码首先使用REPLACE函数去掉百分比字符串...
to a corresponding secondary database. (Full recovery model only.)'WHENlog_reuse_wait =13THEN'If a database is configured to use indirect checkpoints, the oldest page on the database might be older than the checkpoint log sequence number (LSN).'WHENlog_reuse_wait =16THEN...
{ <partition_number> [ TO <partition_number> ] } [ , ...n ] ) ] | XML_COMPRESSION = { ON | OFF } [ ON PARTITIONS ( { <partition_number> [ TO <partition_number> ] } [ , ...n ] ) ] } <single_partition_rebuild_index_option> ::= { DATA_COMPRESSION = { COLUMNSTORE | ...
{ <partition_number> [ TO <partition_number> ] } [ , ...n ] ) ] | XML_COMPRESSION = { ON | OFF } [ ON PARTITIONS ( { <partition_number> [ TO <partition_number> ] } [ , ...n ] ) ] } <single_partition_rebuild_index_option> ::= { DATA_COMPRESSION = { COLUMNSTORE | ...
cast or convert nvarchar with comma as decimal separator to decimal CAST Timestamp to Bigint CAST() with COLLATE is non-deterministic -- what's the work around? Casting a NVARCHAR column with percentage as INT casting data-type nvarchar(100) to uniqueidentifier, how? Casting to datetime2 Catc...
If the percentage specified for FILLFACTOR isn't large enough to allow for one row, the Database Engine internally overrides the percentage to allow for the minimum. The number of rows on an intermediate index page is never less than two, regardless of how low the value of FILLFACTOR.In ...
The SQL Server Database Engine doesn't escalate row or page locks to table locks.Using this trace flag can generate excessive number of locks and if the lock memory grows large enough, attempts to allocate additional locks for any query might fail. This can slow the performance of the Data...