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Howto: Clean a mysql InnoDB storage engine?
...clean a mysql innodb storage engine so it is not storing data from deleted tables?
2 Answers
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Get table column names in MySQL?
Is there a way to grab the columns name of a table in mysql?
using php
19 Answers
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How to add a primary key to a MySQL table?
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After adding the column, you can always add the primary key:
ALTER TABLE goods ADD PRIMARY KEY(id)
As to why your script wasn't working, you need to specify PRIMARY KEY, not just the word PRIMARY:
alter table goods add column `id` int(10) unsigned primary KEY AUTO_INCREMENT;
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Psql list all tables
I would like to list all tables in the liferay database in my PostgreSQL install. How do I do that?
6 Answers
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Is a one column table good design? [closed]
It it ok to have a table with just one column? I know it isn't technically illegal, but is it considered poor design?
15 A...
How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
... like to write a single SQL command to drop multiple columns from a single table in one ALTER TABLE statement.
11 Answers...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
How to change one attribute in a table using T-SQL to allow nulls (not null --> null)? Alter table maybe?
8 Answers
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The ALTER TABLE statement conflicted with the FOREIGN KEY constraint
I have a problem when trying to add a foreign key to my tblDomare table; what am I doing wrong here?
18 Answers
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How can you represent inheritance in a database?
...e SQL Entity-Attribute-Value antipattern. This is a brief overview:
Single Table Inheritance (aka Table Per Hierarchy Inheritance):
Using a single table as in your first option is probably the simplest design. As you mentioned, many attributes that are subtype-specific will have to be given a NULL v...
How can I get column names from a table in Oracle?
...he database to get the column names , not to be confused with data in the table. For example, if I have a table named EVENT_LOG that contains eventID , eventType , eventDesc , and eventTime , then I would want to retrieve those field names from the query and nothing else.
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