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MySQL - why not index every field?

...he wonder of indexes, and performance has improved dramatically. However, with all I've learned, I can't seem to find the answer to this question. ...
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What is the official “preferred” way to install pip and virtualenv systemwide?

Is it this, which people seem to recommend most often: 16 Answers 16 ...
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PSQLException: current transaction is aborted, commands ignored until end of transaction block

...ne of your SQL Queries failed, and you gobbled up that failure and ignored it. But that wasn't enough, THEN you used that same connection, using the SAME TRANSACTION to run another query. The exception gets thrown on the second, correctly formed query because you are using a broken transaction to ...
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Insert into … values ( SELECT … FROM … )

... FROM table2 This is standard ANSI SQL and should work on any DBMS It definitely works for: Oracle MS SQL Server MySQL Postgres SQLite v3 Teradata DB2 Sybase Vertica HSQLDB H2 AWS RedShift SAP HANA sha...
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How may I sort a list alphabetically using jQuery?

I'm a bit out of my depth here and I'm hoping this is actually possible. 10 Answers 10...
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How to add 30 minutes to a JavaScript Date object?

...te object which is 30 minutes later than another Date object. How do I do it with JavaScript? 19 Answers ...
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`static` keyword inside function?

...e for Drupal 7, and I found some things I hadn't seen before. I did some initial looking in the php manual, but it didn't explain these examples. ...
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Python Anaconda - How to Safely Uninstall

...the entire anaconda install directory: rm -rf ~/anaconda. You may also edit ~/.bash_profile and remove the anaconda directory from your PATH environment variable, and remove the hidden .condarc file and .conda and .continuum directories which may have been created in the home directory wit...
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Python element-wise tuple operations like sum

...follow | edited Sep 27 '10 at 11:14 community wiki ...
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip

After this comment to one of my question, I'm thinking if it is better using one database with X schemas or vice versa. 5...