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To compare data from the same table in Oracle, you can use SQL queries to retrieve the relevant information and then analyze the results. One common method is to use self-joins in the SQL query. By joining the table with itself based on a specific condition, you can compare data between different rows within the same table.For example, you can compare the values of different columns or rows within the same table to identify discrepancies or patterns.

To get all the sequences grant DDL for the schema in Oracle, you can use the following SQL query:SELECT 'GRANT SELECT ON ' || SEQUENCE_NAME || ' TO <schema_name>;' FROM ALL_SEQUENCES WHERE SEQUENCE_OWNER = '<schema_name>';This query will retrieve the grant statements for all sequences in the specified schema. Remember to replace <schema_name> with the actual name of the schema for which you want to retrieve the grant DDL statements.

To insert a string into Oracle as a date type, you can use the TO_DATE function. This function converts a string to a date using a specified format.

To calculate the percentage of rows that satisfy a specific condition in SQL Oracle, you can use the COUNT() function in combination with the CASE statement.First, count the total number of rows in the table using COUNT(*). Then, use the CASE statement to count the number of rows that match the specific condition. Divide the count of rows that match the condition by the total count of rows and multiply by 100 to get the percentage.

To get 2 distinct rows from 1 row with 3 tables in SQL Oracle, you can use the JOIN clause to combine the three tables and then use the DISTINCT keyword to retrieve only unique rows. You can specify the columns you want to include in the result set to ensure that you get the distinct rows you are looking for. Additionally, you can use the WHERE clause to further filter the data if needed.

You can use the REGEXP_SUBSTR function in Oracle SQL to extract all words from a string column. This function allows you to specify a regular expression pattern to match words in the string.

To create an order sequence in Oracle, you can use the "SEQUENCE" object.Here is an example of how you can create an order sequence in Oracle:CREATE SEQUENCE order_sequence START WITH 1 INCREMENT BY 1 NOCACHE NOCYCLE;In this example, "order_sequence" is the name of the sequence.

To compare the seconds between two dates to an integer in Oracle, you can use the following SQL query: SELECT ABS((date1 - date2) * 86400) AS seconds_difference FROM dual; In this query, "date1" and "date2" are the two dates that you want to compare. The expression "(date1 - date2) * 86400" calculates the difference between the two dates in seconds.

To split a string in Oracle using the SUBSTR and INSTR functions, you can first identify the position of the delimiter in the string using the INSTR function. Once you have the position of the delimiter, you can use the SUBSTR function to extract the desired substring from the original string.

To use row_number() in Oracle, you can include it as part of your SELECT statement to assign a unique row number to each row in the result set. This function is commonly used in scenarios where you need to rank or identify individual rows within a query. It is important to note that the row numbers generated by row_number() are not persisted and will change each time the query is executed.