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How to delete duplicates on a MySQL table?
I need to DELETE duplicated rows for specified sid on a MySQL table.
25 Answers
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Create a temporary table in a SELECT statement without a separate CREATE TABLE
Is it possible to create a temporary (session only) table from a select statement without using a create table statement and specifying each column type? I know derived tables are capable of this, but those are super-temporary (statement-only) and I want to re-use.
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Find a value anywhere in a database
Given a #, how do I discover in what table and column it could be found within?
18 Answers
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Drop all tables whose names begin with a certain string
How can I drop all tables whose names begin with a given string?
14 Answers
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Check if table exists without using “select from”
Is there a way to check if a table exists without selecting and checking values from it?
17 Answers
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How to do INSERT into a table records extracted from another table
I'm trying to write a query that extracts and transforms data from a table and then insert those data into another table. Yes, this is a data warehousing query and I'm doing it in MS Access. So basically I want some query like this:
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Query to count the number of tables I have in MySQL
I am growing the number of tables I have and I am sometimes curious just to do a quick command line query to count the number of tables in my database. Is that possible? If so, what is the query?
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Twitter bootstrap scrollable table
I would like to have a table on my website. The problem is that this table will have about 400 lines. How can I limit the table's height, and apply scrollbar to it?
This is my code:
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Difference between View and table in sql
What is the main difference between view and table in SQL. Is there any advantage of using views instead of tables.
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How do I check if an index exists on a table field in MySQL?
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Use SHOW INDEX like so:
SHOW INDEX FROM [tablename]
Docs: https://dev.mysql.com/doc/refman/5.0/en/show-index.html
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