Enter SQL*Plus commands to configure the SQL*Plus environment Startup and shutdown an Oracle database Connect to an Oracle database Enter and execute SQL commands and PL/SQL blocks Format and print query results
Rapid query processing.SQL enables rapid query processing, enabling users to retrieve, manipulate or store data quickly and efficiently. However, optimizing queries for rapid processing involves a combination of proper indexing, query optimization and database design considerations. Security features.SQL pr...
Connect to a SQL Server instance in SSMS. Create and query a SQL Server database in SSMS running basic Transact-SQL (T-SQL) queries.
cmdidProfilerTraceQuery Menu command IDs that belong to the SQLEditorCommandSet command set. For more information about original declarations, see the pkgicmd.h header in SQLEditorsUI satellite assembly. cmdidReconnect Menu command IDs that belong to the SQLEditorCommandSet command set. For more ...
return "Data Source=(local);Integrated Security=true;" + "Initial Catalog=AdventureWorks; Asynchronous Processing=true"; } private void button1_Click(object sender, System.EventArgs e) { if (isExecuting) { MessageBox.Show(this, "Already executing. Please wait until the current query " + "has...
return "Data Source=(local);Integrated Security=true;" + "Initial Catalog=AdventureWorks; Asynchronous Processing=true"; } private void button1_Click(object sender, System.EventArgs e) { if (isExecuting) { MessageBox.Show(this, "Already executing. Please wait until the current query " + "has...
Enter and execute SQL commands and PL/SQL blocks Format and print query results SQL*Plus is available on several platforms. The commands shown in Table A-1 are SQL*Plus commands available in the command-line interface. Not all commands or command parameters are shown. See Also: SQL*Plus...
2.0.0 2.0.4 delete commands not supported elastic2.0 2.1.0 2.1.0.2 delete commands not supported elastic2.1 2.1.1 2.1.1.1 delete commands not supported elastic2.1.1 2.1.2 2.1.2.0 delete commands not supported elastic2.1.2 2.2.0 2.2.0.1 delete commands not supported elastic2.2.0 2.2.1 2.2...
TimesTen caches compiled commands in the SQL command cache. These commands can be invalidated. An invalidated command is usually re-prepared automatically just before it is re-run. A single command may be prepared several times. Note: SeeUsing the Query Optimizer to Choose Optimal Planfor more ...
不包含数据信息与列信息 * * 2.Analyzer将一系列规则作用在未解析逻辑算子树上,生成解析后的逻辑算子树 * * 3.Optimizer将一系列优化规则应用在逻辑算子树中,确保结果正确的前提下改进低效结构,生成优化后的逻辑算子树 */val sql=spark.sql("select name from people where age >= 20")sql.queryExecution....