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How can I alter a primary key constraint using SQL syntax?

... ALTER TABLE db.table DROP PRIMARY KEY is for MySQL. (Not MSSQL.) – Roy Latham Sep 25 at 16:43 add a comment  |  ...
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How to make Sequelize use singular table names

...ames freezeTableName: true } } var sequelize = new Sequelize('mysql://root:123abc@localhost:3306/mydatabase', opts) Now when you define your entities, you don't have to specify freezeTableName: true: var Project = sequelize.define('Project', { title: Sequelize.STRING, descrip...
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What does SQL clause “GROUP BY 1” mean?

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XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP

... wamp? I am running wamp and still receiving this message. Apache, php and mysql are all up-to-date – user2883071 Dec 24 '14 at 18:52 ...
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Primary key or Unique index?

...hen it tries to insert the value 1 into this column for a second time. In MySQL a unique constraint allows multiple NULLs. It is possible to make a unique index on mutiple columns. Primary key versus unique index Things that are the same: A primary key implies a unique index. Things that are...
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SELECT * WHERE NOT EXISTS

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How can I edit a view using phpMyAdmin 3.2.4?

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Fastest way to count exact number of rows in a very large table?

... The fastest way by far on MySQL is: SHOW TABLE STATUS; You will instantly get all your tables with the row count (which is the total) along with plenty of extra information if you want. ...
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Do you use source control for your database items? [closed]

... With Mysql Workbench you can have all that in a structured file(xml) that can be opened and handled with a GUI. Being xml just text, yes it can be versioning without having to type single sql sentence. – lev...
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How to print the ld(linker) search path

...e prints out /usr/lib64/atlas: /usr/lib/llvm: /usr/lib64/llvm: /usr/lib64/mysql: /usr/lib64/nvidia: /usr/lib64/tracker-0.12: /usr/lib/wine: /usr/lib64/wine: /usr/lib64/xulrunner-2: /lib: /lib64: /usr/lib: /usr/lib64: /usr/lib64/nvidia/tls: (hwcap: 0x8000000000000000) /lib/i686: (hwcap: 0x0008000000...