There is no documented LEFT() function in Oracle. Find the full set here. Probably what you have is a user-defined function. You can check that easily enough by querying the data dictionary: But there is the question of why the stored procedure works and the query doesn’t. One possible solution is that the stored procedure is … Read more
There is no such thing as “auto_increment” or “identity” columns in Oracle as of Oracle 11g. However, you can model it easily with a sequence and a trigger: Table definition: Trigger definition: UPDATE: IDENTITY column is now available on Oracle 12c: or specify starting and increment values, also preventing any insert into the identity column … Read more
In Oracle, you can simply subtract two dates and get the difference in days. Also note that unlike SQL Server or MySQL, in Oracle you cannot perform a select statement without a from clause. One way around this is to use the builtin dummy table, dual:
The best and most efficient way is to catch the “table not found” exception: this avoids the overhead of checking if the table exists twice; and doesn’t suffer from the problem that if the DROP fails for some other reason (that might be important) the exception is still raised to the caller: ADDENDUM For reference, … Read more
The exception is being raised by a password verification function, assigned to the user via a profile. You can see the profile name and the function being applied by querying: You can then see what the function is actually doing by looking at its source, using the name identified in the previous query: From there … Read more
This works on functions, procedures, packages, types, synonyms, trigger and views. Update: After updating the post for the third time, I’ll reformulate this: This does not work on tables 🙂 And yes, there is documentation on this syntax, and there are no REPLACE option for CREATE TABLE.
You have missed out the field name id in the second NOT LIKE. Try: The AND in the where clause joins 2 full condition expressions such as id NOT LIKE ‘1%’ and can’t be used to list multiple values that the id is ‘not like’.
In oracle, generally speaking, there are number of facts that I will mention in following section: Each database can have many Schema/User (Logical division). Each database can have many tablespaces (Logical division). A schema is the set of objects (tables, indexes, views, etc) that belong to a user. In Oracle, a user can be considered … Read more
Use the Oracle 10g dialect. Also Hibernate 3.3.2+ is required for recent JDBC drivers (the internal class structure changed – symptoms will be whining about an abstract class). Dialect of Oracle 11g is same as Oracle 10g (org.hibernate.dialect.Oracle10gDialect). Source: http://docs.jboss.org/hibernate/orm/3.6/reference/en-US/html/session-configuration.html#configuration-optional-dialects
You can use IF() where in Oracle you would have used DECODE().