I found a very similar topic on Oracle Equivalent to MySQL INSERT IGNORE? However, I could not make work any of the proposed solutions. My case is a little special as my table does contains only 1 field, which is the primary key. Let’s call the field “id” and the table “myTable” in the following. Using MERGE This first attempt
Tag: oracle11g
Defining size of CLOB in Oracle
I am making a table in which I am storing XML. To store XML I am using CLOB data type. The max size of my XML would be 5kb. What size of CLOB column should I define while creating the table? Answer you don’t define a size exactly when setting a clob (unlike a varchar). it is just simply clob.
How to get the last row of an Oracle a table
I want to get the last row, which I inserted into a table in an Oracle 11g Express database. How can I do this? Answer There is no such thing as the “last” row in a table, as an Oracle table has no concept of order. However, assuming that you wanted to find the last inserted primary key and that
How can I select from list of values in Oracle
I am referring to this stackoverflow answer: How can I select from list of values in SQL Server How could something similar be done in Oracle? I’ve seen the other answers on this page that use UNION …
How to activate the hr schema in Oracle 11g
I am learning PL/SQL and am using SQL Developer cause I created many users with hr schema. But when a user logs in to SQL Developer give an error like the users is invalid. but When I use the system user, it works perfectly but without hr schema. So: How can I activate the hr schema in system user or
Update Query with select and row lock
I got this query as part of a previous answer to my question. Now how to lock the rows in the select query to make sure no other thread over writes my update. Answer It’s not clear to me that you have the problem you seem to think you have. Updating a row in the table inherently places a row-level