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Hidden Features of MySQL
...t connections, but self compiled binaries often have less of a limit.
Set table_cache to match the number of your open tables and concurrent connections. Watch the open_tables value and if it is growing quickly you will need to increase its size.
Note:
The 2 previous parameters may require a lot...
Remove duplicate rows in MySQL
I have a table with the following fields:
25 Answers
25
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Create table in SQLite only if it doesn't exist already
I want to create a table in a SQLite database only if doesn't exist already. Is there any way to do this? I don't want to drop the table if it exists, only create it if it doesn't.
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PostgreSQL: Show tables in PostgreSQL
What's the equivalent to show tables (from MySQL) in PostgreSQL?
24 Answers
24
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Best way to check if a Data Table has a null value in it
what is the best way to check if a Data Table has a null value in it ?
6 Answers
6
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List all tables in postgresql information_schema
What is the best way to list all of the tables within PostgreSQL's information_schema?
8 Answers
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MySQL: Can't create table (errno: 150)
I am trying to import a .sql file and its failing on creating tables.
34 Answers
34
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How to convert a table to a data frame
I have a table in R that has str() of this:
5 Answers
5
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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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Border around specific rows in a table?
...ng to design some HTML/CSS that can put a border around specific rows in a table. Yes, I know I'm not really supposed to use tables for layout but I don't know enough CSS to completely replace it yet.
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