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MySQL how to join tables on two fields

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How to convert SQL Query result to PANDAS Data Structure?

...Original answer: I can't help you with SQLAlchemy -- I always use pyodbc, MySQLdb, or psychopg2 as needed. But when doing so, a function as simple as the one below tends to suit my needs: import decimal import pydobc import numpy as np import pandas cnn, cur = myConnectToDBfunction() cmd = "SELE...
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MySQL Query to select data from last week?

Hi I have a table with a date field and some other information. I want to select all entries from the past week, (week start from Sunday). ...
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When to use MongoDB or other document oriented database systems? [closed]

...orm for video- and audio-clips, photos and vector-grafics. We started with MySQL as the database backend and recently included MongoDB for storing all meta-information of the files, because MongoDB better fits the requirements. For example: photos may have Exif information, videos may have audio...
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Which is more efficient: Multiple MySQL tables or one large table?

I store various user details in my MySQL database. Originally it was set up in various tables meaning data is linked with UserIds and outputting via sometimes complicated calls to display and manipulate the data as required. Setting up a new system, it almost makes sense to combine all of these tabl...
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MySQL COUNT DISTINCT

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How do you join on the same table, twice, in mysql?

I have 2 tables. One (domains) has domain ids, and domain names (dom_id, dom_url). 3 Answers ...
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Insert, on duplicate update in PostgreSQL?

...rom an answer on Stack Overflow how to perform multiple updates at once in MySQL using the following syntax: 16 Answers ...
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How does this giant regex work?

...pecially FTP, although should be using sftp or ftps. If you control your MySQL server make sure your web application's MySQL user account is not root, and make sure you remove MySQL FILE privileges from the account. You should also go a step further and do a chmod 500 -R /path/to/web/root and d...
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SQL how to make null values come last when sorting ascending

... @Martin Note this question is not tagged mysql. I provided a generalized solution - there are many different ways of doing the same thing across different dbs. – RedFilter Oct 16 '15 at 14:15 ...