This Oracle tutorial explains how to use the Oracle INSERT statement with syntax, examples, and practice exercises. The Oracle INSERT statement is used to insert a single record or multiple records into a table in Oracle.
DB_FILES specifies the maximum number of database files that can be opened for this database. The maximum valid value is the maximum number of files, subject to operating system constraint, that will ever be specified for the database, including files to be added by ADD DATAFILE statements. ...
Oracle Database uses two engines to run PL/SQL blocks and subprograms. The PL/SQL engine runs procedural statements, while the SQL engine runs SQL statements. During execution, every SQL statement causes a context switch between the two engines, resulting in performance overhead. -- Oracle 使用...
The PL/SQL block inExample 6-10queries multiple values into PL/SQL tables, with and without bulk binds. Without bulk bind, PL/SQL sends a SQL statement to the SQL engine for each selected employee, leading to context switches that slow performance. Example 6-10 SELECT Statements that Referen...
These SELECT statements use a combination of the Oracle UPPER function and the LIKE condition to return all of the records where the supplier_name field contains the word "test", regardless of whether it was stored as TEST, Test, or test.Practice...
Oracle9i SQL Reference for details about the SET TRANSACTION and ALTER SESSION statements.The settings for these parameters should be changed only when an instance is shut down. If multiple instances are accessing a single database, then all instances should use the same setting for these parameters...
Support for migrating "Continue" statements from Oracle to SQL Server. Support in SSMA command line to alter Data Type mapping and Project Preferences. Support for migrating data using SQL Server Integration Services (SSIS). After converting the schema, it's possible to create an SSIS package by...
This chapter shows you how to use Oracle Dynamic SQL, an advanced programming technique that adds flexibility and functionality to your applications. You will learn four methods for writing programs that accept and process SQL statements at run time. This chapter contains the following topics:...
LiteSql 简介 一款使用原生SQL查询的轻量级ORM,单表查询和SQL拼接查询条件支持Lambda表达式。支持Oracle、MSSQL、MySQL、PostgreSQL、SQLite、Access、ClickHouse等数据库。 经典示例 DateTime? startTime = null; var session = LiteSqlFactory.GetSession(); session.OnExecuting = (s, p) => Console.WriteLine(s);...
pg_statement_rollback is a PostgreSQL extension to add server side transaction with rollback at statement level like in Oracle or DB2. If at any time during execution a SQL statement causes an error, all effects of the statement are rolled back. The effect of the rollback is as if that ...