The Exception section of a PL/SQL Block starts with the reserved keyword EXCEPTION. This section is optional. Any errors in the program can be handled in this section so that the PL/SQL Blocks terminates gracefully. If the PL/SQL Block contains exceptions that cannot be handled, the Block t...
There are no prequisities for this Oracle tutorial. You should be able to easily understand this tutorial and learn the basic concepts of Oracle as you progress to the more advanced topics. Now, let's get started! Start Tutorial Or jump directly to a topic in Oracle/PLSQL: ...
PL/SQL Records A record is a collection of data objects that are kept in fields, each having its own name and data type. A record can be thought of as a variable that can store a table row or a set of columns from a table row. Table columns relate to the fields. Records are made...
TutorialUnion, Minus, and Intersect: Databases for Developers DescriptionAn introduction to the set operators, union, minus, and intersect Tagsunion, minus, intersect AreaSQL General ContributorChris Saxon (Oracle) CreatedSunday May 20, 2018
Getting started guides, documentation, tutorials, architectures, and more content for Oracle products and services.
Download now Featured solutions Build AI Chatbot with Oracle Database 23ai Learn to create a smart chatbot using Oracle Database 23ai and OCI Generative AI with this comprehensive tutorial View solutionfor Build AI Chatbot with Oracle Database 23ai ...
Oracle SQL Plus常用命令 set linesize 200 set linesize 可以设置一行的字符数,默认为80个字符。 set linesize 200,表示设置一行为200个字符。 l(List) 可以显示缓存区中的最后执行的内容。 run / r 以上三个命令功能是一致的,重新运行缓存区中的语句。
Backup Type SQL Server Command Oracle (RMAN) Command Full backup database Backup database Files or filegroups backup database db1 filegroup=’db1file1’ to disk … Backup as backups datafile ‘/u01/data/users01.dbf’; Tablespaces Backup tablespace system, users; Logs (transaction and archive...
Oracle/SQL tutorialMichael Gertz
sql developer 连接Mysql数据库 打开Sqldeveloper这里需要一个连接mysql数据库的Jar包, 下载地址: https://dev.mysql.com/downloads/connector/j/ 如果使用的是mysql8.x版本就直接下载,如果是5.x版本就点右边的寻找旧版本的jar. 5.x版本下载 将下载好的jar解压,在sqldeveloper中找到mysql-connector-java-*.jar ...