supports long-term archival for compliance and backup, and facilitates detailed troubleshooting. Additionally, it allows for seamless integration with other datasets and simplifies sharing logs with team members or auditors, enhancing overall data management and accessibility. ...
PLAN_HASH_VALUE1NUMBERIN PLAN_HASH_VALUE2NUMBERIN FUNCTIONDIFF_PLAN_CURSORRETURNSVARCHAR2 参数名称 类型 输入/输出默认值? --- SQL_ID VARCHAR2IN CURSOR_CHILD_NUM1NUMBERIN CURSOR_CHILD_NUM2NUMBERIN FUNCTIONDIFF_PLAN_OUTLINERETURNSVARCHAR2 参数名称 类型 输入/输出默认值? --- SQL_TEXTCLOBIN OUTLINE...
After the statement has executed, you can display the plan by querying the V$SQL_PLAN view. V$SQL_PLAN contains the execution plan for every statement stored in the cursor cache. Its definition is similar to the PLAN_TABLE. See “PLAN_TABLE Columns”. The advantage of V$SQL_PLAN over E...
Chapter 15, "Using SQL Plan Management". 12.1.1.1 Different Schemas The execution and explain plan occur on different databases. The user explaining the statement is different from the user running the statement. Two users might be pointing to different objects in the same database, resulting in...
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lower() in ("utf8", "utf-8"): conn_config["use_unicode"] = True if conn.extra_dejson.get("cursor", False): import MySQLdb.cursors try: import MySQLdb.cursors except ImportError: raise RuntimeError( "You do not have `mysqlclient` package installed. "...
A tool or function provided by the DBMS (Database Management System) that makes an execution plan visible. Execution plan: A parsed, optimized, compiled and executable SQL statement stored in the so-called SQL cache of the database. Using the explain plan the SQL execution flow of this pla...
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What is a where clause in database management? Explain the following crow's foot E-R diagram. Include entities, keys, attributes, cardinality. What is the special type of entity represented by COMMISSION_RATE? What does SQL stand for? What are the...
1. Write SQL SELECT commands to answer the following queries. Consider the following relational database for the Super Baseball League. It keeps track of teams in the league, coaches and players on th What does SQL stand for? Describe how...