如果删除了目录的执行位，比如chmod -R a-x，您可能会使得一个目录变得不可使用。 为了更具选择性，可以使用 find .
You can inadvertently render a directory unusable if you remove its execute bits, say with chmod -R a-x.
选择性：当查询优化器(query optimizer，即QO)读取SQL时，选择性的程度决定了索引是否应该用来执行该操作。
Selectivity: When the query optimizer (QO) studies your SQL, the degree of selectivity determines if an index should be used to perform the operation.
然后分别从训练和执行两个方面提出快速方法：选择性增益计算方法和稀疏特征树方法。
Then propose two fast methods for training and execution, Selective Gain Computation algorithm and Sparse Feature Tree, accordingly.
上面表达式使优化器不能有效分配基数或选择性消耗，可能会反过来影响整个执行计划。
These expressions prevent the optimizer from assigning valid cardinality or selectivity estimates and can in turn affect the overall plan and the join method.
当执行新的设计和装配时选择性焊接与喷嘴科技知识将可以提高竞争优势。
Knowledge of Selective Soldering and nozzle technology may offer competitive advantage when implemented in new design and assembly processes.
而业务复核将注意力放在选择性业务的执行工作上。
Engagement reviews focus on work performed on selected engagements.
自订建置工具可指定要执行的命令、输入档的清单、由命令产生之输出档的清单，以及工具的选择性描述。
A custom build tool specifies a command to run, a list of input files, a list of output files that are generated by the command, and an optional description of the tool.
从这个组件找出指定型别，并使用系统启动项，利用选择性区分大小写的搜寻，建立它的执行个体。
Locates the specified type from this assembly and creates an instance of it using the system activator, with optional case-sensitive search.
从这个组件找出指定型别，并使用系统启动项，利用选择性区分大小写的搜寻，建立它的执行个体。
Locates the specified type from this assembly and creates an instance of it using the system activator, with optional case-sensitive search.
应用推荐