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If a column is an image value type, how you can compare column values? How can you use this column in join clause?
You have two tables with a one to many join based on a field named id. You need to find records in the parent table that are not represented in the child table. how would you accomplish this?
You have a table with three columns: amount1, amount2, and amount3 in a single row only one of these three columns will have a value and the other two will be null. Write a sql query to retrieve the values from these columns?
How can I detect whether a given connection is blocked?
The count() function always returns a int value type what should you do if you need to count rows from a query which you know will return a value that is too large for an int value type?
Explain the rollup operator?
Explain about network model?
Explain about relational operator join?
What are the three basic rules which are to be followed for the relational model of the database?
Explain about the relational database?
Explain about post-relational databases?
Explain about a primary key?
Explain what a database is?
State the acid rules?
Explain the process of the user request and data generating?
