I am not deeply acquainted with Oracle Sql Queries, therefore I face a problem on deleting some rows from a table which must fulfill a constraint which includes fields of another (joining) table. In other words I want to write a query to delete rows including JOIN. In my case I have a table ProductFilters and…
Tag: oracle
SQL query to find Primary Key of a table?
How can I find which column is the primary key of a table by using a query?
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
Oracle Sequence Transactionality
I need for a particular business scenario to set a field on an entity (not the PK) a number from a sequence (the sequence has to be a number between min and max I defined the sequence like this : …
Oracle SQL Loader – How to not display “Commit point reached – logical record count” counts
I’m loading big files via Oracle SQL Loader over vpn from home, and they’re taking a lot of time. They were a lot faster to load when I loaded them from work. The files I’m loading are on my work server already. So my thinking is that the slow down is because of the “Commit point reach…
Oracle copy data to another table
In the Oracle, I copy data from a backup to a new table, it doesn’t work. what is the correct syntax ? Thanks select CODE, MESSAGE into EXCEPTION_CODES (CODE, MESSAGE) from Exception_code_tmp the …
How to check any missing number from a series of numbers?
I am doing a project creating an admission system for a college; the technologies are Java and Oracle. In one of the tables, pre-generated serial numbers are stored. Later, against those serial numbers, the applicant’s form data will be entered. My requirement is that when the entry process is completed…
Counting number of records hour by hour between two dates in oracle
I need a SINGLE query that does this sequence in oracle. As you see the hour is increasing one by one. here is the output I have written a query but it does not give me the right answer! this query gives me a result set that sum of it’s count(*) is equal to the first query written above! here
Need help converting date in format 20120130 to Date data type oracle sql
Could you please help me in converting date from the format “20120101” to DATE format in Orcle Sql. I looked at this link but it does not mention if the date format is custom.. EDIT: Is it possible …
How to insert an existing GUID into Oracle RAW(16) field in a script
I have an sql server script which inserts known fixed guid values into a table. It looks like: Note that guid is in human-readable form. Since ID is uniqueidentifier sql server understands how to convert a string to guid data type. I need to make the same script for Oracle, ID is of RAW(16) type. Taking the s…