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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...le named test1, to which you want to add an auto-incrementing, primary-key id (surrogate) column. The following command should be sufficient in recent versions of PostgreSQL:
ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;
Older Versions of PostgreSQL
In old versions of PostgreSQL (prior ...
Disable a Maven plugin defined in a parent POM
...or me when disabling Findbugs in a child POM:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<executions>
<execution>
<id>ID_AS_IN_PARENT</id> <!-- id is necessary ...
Entity Framework - Invalid Column Name '*_ID"
...answered Dec 18 '13 at 8:23
drewiddrewid
2,31522 gold badges1313 silver badges99 bronze badges
...
Sequelize.js delete query?
... It's a pretty old question so at the time I guess Sequelize didn't have a destroy method surprisingly
– ncksllvn
Jun 16 '16 at 18:39
3
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Delete sql rows where IDs do not have a match from another table
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Using LEFT JOIN/IS NULL:
DELETE b FROM BLOB b
LEFT JOIN FILES f ON f.id = b.fileid
WHERE f.id IS NULL
Using NOT EXISTS:
DELETE FROM BLOB
WHERE NOT EXISTS(SELECT NULL
FROM FILES f
WHERE f.id = fileid)
Using NOT IN:
DELETE FROM BLOB
WHERE fi...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...
static $id = 0;
static $ct = 0;
$ct_last = $ct;
&...
android.widget.Switch - on/off event listener?
I would like to implement a switch button, android.widget.Switch (available from API v.14).
10 Answers
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PHP - find entry by object property from an array of objects
...this
$item = null;
foreach($array as $struct) {
if ($v == $struct->ID) {
$item = $struct;
break;
}
}
See this question and subsequent answers for more information on the latter - Reference PHP array by multiple indexes
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How do I concatenate strings and variables in PowerShell?
...
Write-Host "$($assoc.Id) - $($assoc.Name) - $($assoc.Owner)"
See the Windows PowerShell Language Specification Version 3.0, p34, sub-expressions expansion.
share
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Typing Enter/Return key using Python and Selenium?
...
JAVA
driver.findElement(By.id("Value")).sendKeys(Keys.RETURN);
OR,
driver.findElement(By.id("Value")).sendKeys(Keys.ENTER);
PYTHON
from selenium.webdriver.common.keys import Keys
driver.find_element_by_name("Value").send_keys(Keys.RETURN)
OR,
drive...