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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
...
Note this is not standard SQL. An example from the manual:
CREATE TABLE test (
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
data VARCHAR(64) DEFAULT NULL,
ts TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (id)
);
mysql> REPLACE INTO test VALUES (1, '...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Relative imports in Python 2.7
...as packages, that contain interdependent files, where I want to be able to test parts of them piecemeal. Let's call this lib.foo and say that it needs access to lib.fileA for functions f1 and f2, and lib.fileB for class Class3.
I have included a few print calls to help illustrate how this works. I...
Handling Dialogs in WPF with MVVM
...It is OK for a ViewModel to call a dialog directly. However, when you are testing a ViewModel , that means that the dialog will either pop up during your test, or fail all together (never really tried this).
So, what needs to happen is while testing is to use a "test" version of your dialog. Th...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...访问如下：
server {
listen 80;
server_name www.test.com;
location / {
root /data/test;
index index.html;
}
}
server {
listen 80;
server_name *.test.com;
if ( $http_host ~* "^(.*)\.test\.com$") ...