In SQLite, you can drop a table with the DROP TABLE statement.
You can optionally add the IF EXISTS clause to suppress any errors that might occur if the table doesn’t exist.
Also, if the table is referenced by a foreign key, there are a few things to be aware of.
In this SQL tutorial for beginners, you will create your own database, insert data into that database, and then run queries against that database.
This SQL tutorial will get you running SQL queries in no time!
If you have a partitioned table or index in SQL Server, and you want to determine which partition a given value would be mapped to, you can do this nice and quickly with the $PARTITION system function.
All you need to know is the name of the partition function (and of course, the value you’re interested in).
If you’ve previously created a partitioned table in SQL Server, and you now want to know how many rows are being stored in each partition, here are three queries you can use.
In particular, you can:
sys.dm_db_partition_stats viewsys.partitions view$PARTITION function in a queryBelow are examples of all three.
The SQL CREATE TABLE ... AS SELECT statement enables you to insert the results of a query into a new table.
The SQL INSERT statement is most commonly used to insert individual rows into a table.
But you can also insert the results of a query into a table. This means that you can insert multiple rows at once (as long as they’re returned by the query).
SQL Server has the UPDATE() function that you can use within your DML triggers to check whether or not a specific column has been updated.
While this function only accepts one column, there’s nothing to stop you from including multiple UPDATE() clauses with AND or OR to test for multiple column updates.