SQL是Structured Query Language的缩写,译为结构化查询语言。
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查询序列(query sequence)
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The user Alice wants to grant all users query privileges on her DEPT table. Which SQL statement accomplishes this? ()
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SCS(Structured Cabling Systems)结构化综合布线系统采用模块化设计和()结构。
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When a valid SQL Query in a DB Read step returns 0 rows, which branch of the step will be executed? ()
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在使用EasyRNP的Query功能时,如果所查询域的取值范围是文本时,那么应使用()符号引用。
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SQL是Structured Query Language(结构化查询语言)的缩写,包括哪3个部分()
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You executed the following query: SELECT operation, undo_sql, table_name FROM flashback_transaction_query; Which statement is correct regarding the query output?()
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You executed the following query: SELECT operation, undo_sql, table_name FROM flashback_transaction_query; Which statement is correct regarding the query output?()
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Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?()
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You executed the following query: SELECT operation, undo_sql, table_name FROM flashback_transaction_query; Which statement is correct regarding the query output?()
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在设计阶段,如果在Query对象的SQL语句中设置了参数,则必须在Query的Params属性中为参数设置数据类型。
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Your database interface is running. A user SCOTT starts a SQL *Plus session, and issues the following query: SQL> SELECT * FROM sales; Which process would retrieve the result from the database and return it to the client program?()
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In some countries, students feel comfortable in structured learning situations and are rewarded for accuracy in problem solving. Which dimension is this situation related to?
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SQL: Structured Query Language,称为结构化查询语言,是一种用于数据库查询和编程的语言。
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QueryRunner类的query()方法可执行的SQL语句是
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在mysql中查看慢查,显示结果中slow__query__log是OFF,是什么含义呢()
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Examine the following commands and their output:SQL> SELECT ename, sal FROM emp WHERE ename=‘JAMES‘; ENAME SAL JAMES 1050QL> UPDATE emp SET sal=sal+sal*1.2 WHERE ename=‘JAMES‘;1 row updated.SQL> SELECT ename, sal FROM emp WHERE ename=‘JAMES‘; ENAME SAL JAMES 2310View the exhibit and examine the Flashback Version Query that was executed after the preceding commands.What could be the possible cause for the query not displaying any row?()
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MySQL的慢查询相关的参数long_query_time是表示()。
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MySQL参数query.cache_minyresunt表示()
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Big Data is an evolving ______ that describes a large volume of structured, semi-structured and unstructured data that has the potential to be mined for information and used in machine learning projec
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MySQL的慢查询相关的参数slow_query_not_using_indexes是表示()。
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结构化分析方法(Structured Analysis,SA)是一种面向数据流的分析方法。该方法的主要思想是:用抽象模型的概念,按照软件内部数据传递、变换的关系,运用()的基本手段,自顶向下(TOP-DOWN),逐层分解,直到找到满足功能需要的所有细节为止。