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DROP {DATABASE | SCHEMA} [IF EXISTS] db_name. DROP DATABASE drops all tables in the database and deletes the database. Be very careful with this statement! To use DROP DATABASE, you need the DROP privilege on the database. DROP SCHEMA is a synonym for DROP DATABASE.
8 Μαΐ 2009 · Here is a bash function for checking if a database exists: local db="${1}" local output=$(mysql -s -N -e "SELECT schema_name FROM information_schema.schemata WHERE schema_name = '${db}'" information_schema) if [[ -z "${output}" ]]; then. return 1 # does not exist.
You can create a new database using SQL command "CREATE DATABASE databaseName"; and delete a database using "DROP DATABASE databaseName". You could optionally apply condition "IF EXISTS" or "IF NOT EXISTS" to these commands. For example, mysql> CREATE DATABASE southwind; Query OK, 1 row affected (0.03 sec) mysql> DROP DATABASE southwind; Query ...
The DROP DATABASE statement drops all tables in the database and deletes the database permanently. Therefore, you need to be very careful when using this statement. The following shows the syntax of the DROP DATABASE statement: DROP DATABASE [IF EXISTS] database_name; Code language: SQL (Structured Query Language) (sql)
The MySQL DROP DATABASE Statement. The DROP DATABASE statement is used to drop an existing SQL database. Syntax. DROP DATABASE databasename; Note: Be careful before dropping a database. Deleting a database will result in loss of complete information stored in the database! DROP DATABASE Example.
EXISTS, and DROP VIEW IF. EXISTS statements are always replicated, even if the database, table, or view to be dropped does not exist on the source. This is to ensure that the object to be dropped no longer exists on either the source or the replica, once the replica has caught up with the source.
Drop Database using PHP Script: PHP uses mysql_query function to create or delete a MySQL database. This function takes two parameters and returns TRUE on success or FALSE on failure. Syntax: bool mysql_query( sql, connection ); Parameter Description sql Required - SQL query to create or delete a MySQL database connection Optional - if not ...
