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How do you version your database schema? [closed]
...ion :
http://www.nextep-softwares.com/wiki
It currently supports Oracle, MySql and PostgreSql and is in java so the product runs on windows, linux and mac.
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SQL update from one Table to another based on a ID match
...INNER JOIN
RetrieveAccountNumber RAN
ON
SI.LeadID = RAN.LeadID;
MySQL and MariaDB
UPDATE
Sales_Import SI,
RetrieveAccountNumber RAN
SET
SI.AccountNumber = RAN.AccountNumber
WHERE
SI.LeadID = RAN.LeadID;
...
PHP json_encode encoding numbers as strings
...s with PDO and mssql ; but, if I remember correctly, this also happens for MySQL in PHP < 5.3, when the new mysqlnd driver was not yet existing) ;; to check what your data look like, you can use var_dump, which outputs the types of each part of the data.
– Pascal MARTIN
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Increment a database field by 1
With MySQL, if I have a field, of say logins, how would I go about updating that field by 1 within a sql command?
5 Answers...
How does “do something OR DIE()” work in PHP?
I'm writing a php app to access a MySQL database, and on a tutorial, it says something of the form
4 Answers
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Getting the minimum of two values in SQL
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For MySQL or PostgreSQL 9.3+, a better way is to use the LEAST and GREATEST functions.
SELECT GREATEST(A.date0, B.date0) AS date0,
LEAST(A.date1, B.date1, B.date2) AS date1
FROM A, B
WHERE B.x = A.x
With:
GREATEST(v...
Possible to perform cross-database queries with PostgreSQL?
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If you're coming from a MySQL environment, what MySQL calls databases are really schemas (CREATE SCHEMA == CREATE DATABASE in MySQL), so if you porting something from MySQL using multiple databases, use schemas
– MkV
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Overriding id on create in ActiveRecord
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Perhaps what I experienced only expressed itself with mysql driver.
– jkndrkn
Feb 18 '13 at 19:30
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How to test an SQL Update statement before running it?
...What about Transactions? They have the ROLLBACK-Feature.
@see https://dev.mysql.com/doc/refman/5.0/en/commit.html
For example:
START TRANSACTION;
SELECT * FROM nicetable WHERE somthing=1;
UPDATE nicetable SET nicefield='VALUE' WHERE somthing=1;
SELECT * FROM nicetable WHERE somthing=1; #check
CO...
How do I select an entire row which has the largest ID in the table?
...show profiles and it appears our solutions have the same performance using MySQL. For my own knowledge, do you know what DBMS has poorer performance for subselects?
– unutbu
Feb 7 '14 at 20:08
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