Posts (page 13)
-
3 min readTo get the average between two timestamps in Oracle, you can use the AVG function along with the TIMESTAMP datatype. You can calculate the difference between the two timestamps, convert it into seconds, and then divide it by 2 to get the average time. Alternatively, you can use the EXTRACT function to extract the components (such as hours, minutes, seconds) from the timestamps, calculate the average for each component separately, and then combine them to get the average timestamp.
-
3 min readIn Oracle, you can add minutes to a date(timestamp) using the INTERVAL keyword. You can use the INTERVAL keyword along with the desired number of minutes that you want to add to the date.
-
6 min readTo pass a list from Java to an Oracle procedure, you can use an array or a collection type in Java to represent the list data. You can then pass this array or collection as a parameter to the Oracle procedure using JDBC. The Oracle procedure should be designed to accept the appropriate data type (array or collection) as an input parameter.You can use Oracle's ARRAY and STRUCT data types to pass arrays of data to a procedure.
-
5 min readTo export data from a log table to the email body in Oracle, you can create a PL/SQL procedure that retrieves the necessary data from the log table and formats it into the email body. You can use the UTL_SMTP package in Oracle to send the email with the formatted data.First, you need to create a procedure that selects the data from the log table and formats it into a string that will be used as the email body. This can include concatenating the data into a readable format with line breaks.
-
6 min readTo get a response from Oracle using C#, you can use the Oracle Data Provider for .NET (ODP.NET) library, which allows you to connect to an Oracle database and execute queries. To begin, you need to install the ODP.NET library and add a reference to it in your C# project.Next, you can establish a connection to the Oracle database using the OracleConnection class, providing the connection string with necessary information like the server name, database name, user credentials, etc.
-
5 min readNull values in Oracle provide flexibility and efficiency in handling missing or unknown data in database tables. They allow for the representation of missing information without the need to fill in placeholder values. This can simplify the design of database schemas and reduce data redundancy. Null values also help in performing database operations like querying, inserting, updating and deleting data without encountering errors or issues related to missing values.
-
4 min readTo select the column with the maximum length in Oracle, you can use the LENGTH function along with the MAX function in a SQL query.For example, you can write a query like this:SELECT column_name FROM table_name WHERE LENGTH(column_name) = (SELECT MAX(LENGTH(column_name)) FROM table_name);This query will return the row with the column that has the maximum length in the specified table.[rating:91088293-8081-4d22-90ad-700182aeaeb7]How to obtain the maximum data length of a column in Oracle.
-
3 min readTo produce XML using a SQL query on Oracle, you can use the XML functions provided by Oracle. You can use the XML functions such as XMLROOT, XMLElement, XMLAgg, and XMLForest to generate XML output from SQL queries.These functions allow you to specify the structure of the XML output and format the data accordingly. For example, you can use the XMLElement function to create XML elements in the output, and the XMLAgg function to aggregate multiple XML elements into a single XML document.
-
4 min readTo convert XML to JSON in Oracle, you can use the XMLTABLE function along with the JSON_OBJECT function. You can use the XMLTABLE function to extract data from the XML document and then use the JSON_OBJECT function to convert the extracted data into JSON format. By combining these two functions, you can easily convert XML data into JSON format in Oracle. This process allows you to manipulate and work with the data in a more flexible and structured way.
-
3 min readThe inverse of sys_extract_utc() in Oracle is sys_extract_utc(datetime, timezone). This function converts a UTC datetime to a datetime in the specified timezone. It is used to retrieve the date and time in a particular timezone based on a UTC datetime input.[rating:91088293-8081-4d22-90ad-700182aeaeb7]How to negate the UTC conversion of sys_extract_utc() in oracle?To negate the UTC conversion of sys_extract_utc() in Oracle, you can simply subtract the UTC offset from the result.
-
3 min readTo hide a column in a row in Oracle, you can use the SELECT statement to exclude the column from the result set. Instead of selecting all columns using "*", specify the columns you want to display explicitly in the SELECT statement. This will exclude the hidden column from the output while displaying the rest of the columns in the row. Alternatively, you can also use an alias for the column you want to hide in the SELECT statement, effectively obscuring its original name in the output.
-
4 min readTo insert the sum of two tables in Oracle, you can use a SQL query that joins the two tables and calculates the sum of the desired columns. You can use the SELECT statement with the SUM function to add up the values from the columns in the two tables. Make sure to specify the columns you want to sum up and use the appropriate join condition to combine the data from the two tables. Once you have calculated the sum, you can insert it into a new table or display the result as needed.