PHP Blog
-
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.
-
7 min readTo perform a many-to-many join in Oracle, you need to use a bridge table that connects the two tables that have a many-to-many relationship. This bridge table contains foreign key columns that reference the primary keys of the two tables.To perform the join, you would use SQL queries that involve joining the bridge table with the two tables based on their respective foreign key relationships. This allows you to retrieve data from both tables where the relationship between them is many-to-many.
-
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.
-
3 min readTo get the year and month of a date in Oracle, you can use the EXTRACT function. For example, to get the year from a date column named "date_column", you can use the following query: SELECT EXTRACT(YEAR FROM date_column) AS year FROM your_table_name;Similarly, to get the month from the date column, you can use: SELECT EXTRACT(MONTH FROM date_column) AS month FROM your_table_name;These queries will extract the year and month from the date_column and display them in the query results.
-
6 min readIn Laravel, you can use two different 404 error pages by customizing the default error handling mechanism. One way to achieve this is by defining a custom exception handler in your Laravel application. You can create a new exception handler class that extends Laravel's Handler class and override the render method to return different error views based on the type of exception thrown.
-
3 min readTo drop a scheduled job in Oracle, you can use the DBMS_SCHEDULER package or the Oracle Enterprise Manager.If using the DBMS_SCHEDULER package, you can use the DROP_JOB procedure to remove a specific scheduled job from the database. You will need to specify the job name and optionally the job owner if the job belongs to a different user.Alternatively, you can use the Oracle Enterprise Manager to drop a scheduled job through the GUI interface.
-
5 min readYou can achieve this by using the LISTAGG function in Oracle. This function allows you to aggregate multiple rows of data into a single row. You can use it to concatenate values from multiple columns into a single column in a single row. Simply specify the columns you want to concatenate in the function, along with any separator you want to use. This will give you a single row with the values from the specified columns concatenated together.
-
5 min readTo delegate an exception to the global exception handler in Laravel, you can use the report method within your application's exception handler. By calling the report method with the exception object as a parameter, Laravel will automatically pass the exception to the global exception handler for processing. This allows you to centralize exception handling logic and customize how exceptions are handled throughout your application.
-
5 min readTo group by one field in Oracle, you can use the SQL GROUP BY clause. This clause is used with the SELECT statement to group rows that have the same values in one or more columns. By specifying the field you want to group by in the GROUP BY clause, Oracle will group the data based on the values in that field.