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How do I quickly rename a MySQL database (change schema name)?
...e following seems to work: create the new empty database, then rename each table in turn into the new database:
RENAME TABLE old_db.table TO new_db.table;
You will need to adjust the permissions after that.
For scripting in a shell, you can use either of the following:
mysql -u username -ppassw...
How can one see the structure of a table in SQLite? [duplicate]
How can I see the structure of table in SQLite as desc was in Oracle?
8 Answers
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How to change a table name using an SQL query?
How can I in change the table name using a query statement?
10 Answers
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PostgreSQL create table if not exists
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This feature has been implemented in Postgres 9.1:
CREATE TABLE IF NOT EXISTS myschema.mytable (i integer);
For older versions, here is a function to work around it:
CREATE OR REPLACE FUNCTION create_mytable()
RETURNS void
LANGUAGE plpgsql AS
$func$
BEGIN
IF EXISTS (SELECT...
List of foreign keys and the tables they reference
...ying to find a query which will return me a list of the foreign keys for a table and the tables and columns they reference. I am half way there with
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How to change collation of database, table, column?
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You need to either convert each table individually:
ALTER TABLE mytable CONVERT TO CHARACTER SET utf8mb4
(this will convert the columns just as well), or export the database with latin1 and import it back with utf8mb4.
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SQL Server insert if not exists best practice
I have a Competitions results table which holds team member's names and their ranking on one hand.
8 Answers
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How to copy a row and insert in same table with a autoincrement field in MySQL?
... row with an autoincrement column ID=1 and insert the data into same table as a new row with column ID=2 .
13 Answer...
Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
Using MSSQL2005, can I truncate a table with a foreign key constraint if I first truncate the child table (the table with the primary key of the FK relationship)?
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What should I name a table that maps two tables together? [closed]
Let's say I have two tables:
24 Answers
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