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MySQL check if a table exists without throwing an exception
What is the best way to check if a table exists in MySQL (preferably via PDO in PHP) without throwing an exception. I do not feel like parsing the results of "SHOW TABLES LIKE" et cetera. There must be some sort of boolean query?
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PostgreSQL delete all content
Hello I want to delete all data in my postgresql tables, but not the table itself.
How could I do this?
3 Answers
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Skip certain tables with mysqldump
Is there a way to restrict certain tables from the mysqldump command?
10 Answers
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CASCADE DELETE just once
...esql database on which I want to do a few cascading deletes. However, the tables aren't set up with the ON DELETE CASCADE rule. Is there any way I can perform a delete and tell Postgresql to cascade it just this once? Something equivalent to
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add column to mysql table if it does not exist
...ns is to record in your database a revision number for the schema. Just a table with a single column and single row, with an integer indicating which revision is current in effect. When you update the schema, increment the number.
Another solution would be to just try the ALTER TABLE ADD COLUMN c...
MySQL DROP all tables, ignoring foreign keys
Is there a nice easy way to drop all tables from a MySQL database, ignoring any foreign key constraints that may be in there?
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How to remove unwanted space between rows and columns in table?
How do I remove the extra space between the rows and columns in the table.
14 Answers
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postgresql list and order tables by size
How can I list all the tables of a PostgreSQL database and order them by size ?
7 Answers
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Search text in fields in every table of a MySQL database
I want to search in all fields from all tables of a MySQL database a given string, possibly using syntax as:
24 Answers
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If table exists drop table then create it, if it does not exist just create it
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Just put DROP TABLE IF EXISTS `tablename`; before your CREATE TABLE statement.
That statement drops the table if it exists but will not throw an error if it does not.
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