You got it almost. You don&#39;t need the SELECT in there:

    insert into biz_term(
      biz_term_id, 
      biz_term_name, 
    ) 
    values(
     nextval(&#39;idsequence&#39;),
     &#39;temp&#39;
    );

Any reasons you did not specify the biz_term_id as `serial` (or `bigserial`) which handles that automatically for you?



Even though it&#39;s a bit old topic, I would like to point out that one good reason to go with `BIGINT`, against `BIGSERIAL` is if you are using hibernate.
Here is the article:
https://vladmihalcea.com/postgresql-serial-column-hibernate-identity/

As the article points out, 

&gt; Using a SEQUENCE generator is a better alternative since the
&gt; identifier can be generated prior to executing the INSERT statement

Posting an answer, cause i&#39;m not yet eligible to comment :/ . I apologize in advance in case you find it inappropriate.

This question has been asked in Microsoft interview. Very much curious to know why these people ask so strange questions on probability?

Given a rand(N), a random generator which generates random number from 0 to N-1.

    int A[N]; // An array of size N
    for(i = 0; i &lt; N; i++)
    {
        int m = rand(N);
        int n = rand(N);
        swap(A[m],A[n]);
    }

**EDIT:** Note that the seed is not fixed.

what is the probability that array A remains the same?    
Assume that the array contains unique elements.

What is the probability that the array will remain the same?

I want to write Jquery code in master file, so that if there if user changes page and there is any unsaved changes user should get alert. 
I got one answer from this: [link][1]


  [1]: https://stackoverflow.com/questions/155739/detecting-unsaved-changes-using-javascript
However in most solution I will have to write code on all pages. I want it to write only at one place so that everybody dont have to worry to write it in their modules. My code is like:

    &lt;script type=&quot;text/javascript&quot;&gt;
        var isChange;
        $(document).ready(function () {
            $(&quot;input[type=&#39;text&#39;]&quot;).change(function () {
                isChange = true;
            })
        });
        $(window).unload(function () {
            if (isChange) {
                alert(&#39;Handler for .unload() called.&#39;);
            }
        });

    &lt;/script&gt;

But everytime i make changes in text boxes .change() event is not firing.

What can be wrong in the code?

EDIT:
I changed .change() to .click and it is fired. i am using jquery 1.4.1..is it because of jquery version that change() is not working?

Alert for unsaved changes in form

How do I invoke a postgresql sequence while inserting new row into a table?

I want to do something like this:

    insert into biz_term(
      biz_term_id, 
      biz_term_name, 
      ) 
    values(SELECT nextval(idsequence)&#39;,
    &#39;temp&#39;
    );

I want to do it because when I am trying to insert new record into `biz_term` table then sequence `idsequence` is not getting invoked directly.  How to invoke it?

How to invoke sequence while inserting new record into postgresql table?

How do I invoke a postgresql sequence while inserting new row into a table?
I want to do something like this:
<pre><code class="hljs language-sql">insert into biz_term(
 biz_term_id, 
 biz_term_name, 
 ) 
values(SELECT nextval(idsequence)',
'temp'
);
</code></pre>
I want to do it because when I am trying to insert new record into <code>biz_term</code> table then sequence <code>idsequence</code> is not getting invoked directly. How to invoke it?

I&#39;m writing a function in PL/pgSQL, and I&#39;m looking for the simplest way to check if a row exists.  
Right now I&#39;m SELECTing an `integer` into a `boolean`, which doesn&#39;t really work. I&#39;m not experienced with PL/pgSQL enough yet to know the best way of doing this.

Here&#39;s part of my function:

    DECLARE person_exists boolean;
    BEGIN

    person_exists := FALSE;

    SELECT &quot;person_id&quot; INTO person_exists
      FROM &quot;people&quot; p
    WHERE p.person_id = my_person_id
    LIMIT 1;

    IF person_exists THEN
      -- Do something
    END IF;

    END; $$ LANGUAGE plpgsql;

*Update* - I&#39;m doing something like this for now:

    DECLARE person_exists integer;
    BEGIN

    person_exists := 0;

    SELECT count(&quot;person_id&quot;) INTO person_exists
      FROM &quot;people&quot; p
    WHERE p.person_id = my_person_id
    LIMIT 1;

    IF person_exists &lt; 1 THEN
      -- Do something
    END IF;

PL/pgSQL checking if a row exists

Let say you have a `SELECT id from table` query (the real case is a complex query) that does return you several results.

The problem is how to get all `id` return in a single row, comma separated?


PostgreSQL query to return results as a comma separated list

I&#39;m setting up my PostgreSQL 9.1. I can&#39;t do anything with PostgreSQL: can&#39;t `createdb`, can&#39;t `createuser`; all operations return the error message

    Fatal: role h9uest does not exist

`h9uest` is my account name, and I `sudo apt-get install` PostgreSQL 9.1 under this account.  
Similar error persists for the `root` account.

PostgreSQL error: Fatal: role &quot;username&quot; does not exist

I&#39;ve recently gone through the database migration process as outlined here:

https://devcenter.heroku.com/articles/migrating-from-shared-database-to-heroku-postgres

Now I&#39;m seeing a number of errors in the logs like this:

PGError: ERROR: permission denied for relation &lt;table-name&gt;

Any ideas on what I should do to fix it?

PGError: ERROR: permission denied for relation (when using Heroku)

Is this proper postgresql syntax to add a column to a table with a default value of `false`


    ALTER TABLE users
    ADD &quot;priv_user&quot; BIT
    ALTER priv_user SET DEFAULT &#39;0&#39;

Thanks!

postgresql - add boolean column to table set default

How to assign the result of a query to a variable in PL/pgSQL, the procedural language of PostgreSQL?

I have a function:
    
    CREATE OR REPLACE FUNCTION test(x numeric)
    RETURNS character varying AS
    $BODY$
    DECLARE
    name   character varying(255);
    begin
     name =&#39;SELECT name FROM test_table where id=&#39;||x;
      
     if(name=&#39;test&#39;)then
      --do somthing
     else
      --do the else part
     end if;
    end;
    return -- return my process result here
    $BODY$
    LANGUAGE plpgsql VOLATILE

In the above function I need to store the result of this query:

    &#39;SELECT name FROM test_table where id=&#39;||x;

to the variable `name`.

How to process this?


Store query result in a variable using in PL/pgSQL

Question is simple. How to add column `x` to table `y`, but only when `x` column doesn&#39;t exist  ? I found only solution [here][1] how to check if column exists.

    SELECT column_name 
    FROM information_schema.columns 
    WHERE table_name=&#39;x&#39; and column_name=&#39;y&#39;;

  [1]: https://stackoverflow.com/questions/9991043/how-can-i-test-if-a-column-exists-in-a-table-using-an-sql-statement

How to add column if not exists on PostgreSQL?

I would like to change the name of an item in an enum type in PostgreSQL 9.1.5.  

Here is the type&#39;s create stmt:

    CREATE TYPE import_action AS ENUM
    (&#39;Ignored&#39;,
    &#39;Inserted&#39;,
    &#39;Updated&#39;,
    &#39;Task created&#39;);

I just want to change &#39;Task created&#39; to &#39;Aborted&#39;.  It seems like from the [documentation][1], that the following should work:

    ALTER TYPE import_action
    RENAME ATTRIBUTE &quot;Task created&quot; TO &quot;Aborted&quot;; 

However, I get a msg:

    ********** Error **********
    
    ERROR: relation &quot;import_action&quot; does not exist
    SQL state: 42P01

But, it clearly does exist.

The type is currently being used by more than one table. 

I&#39;m being to think that there must not be a way to do this.  I&#39;ve tried the dialog for the type in pgAdminIII, but there is no way that I can see to rename the it there.  (So, either a strong hint that I can&#39;t do it, or - I&#39;m hoping - a small oversight be the developer that created that dialog)

If I can&#39;t do this in one statment?  Then what do I need to do?  Will I have to write a script to add the item, update all of the records to new value, then drop the old item?  Will that even work?

It&#39;s seems like this should be a simple thing.  As I understand it, the records are just storing a reference to the type and item.  I don&#39;t think they are actually store the text value that I have given it.  But, maybe I&#39;m wrong here as well.


  [1]: http://www.postgresql.org/docs/9.1/static/sql-altertype.html

Rename enum item in PostgreSQL

I am very new to databases, I haven&#39;t worked lot on it. Now I want to understand the term database clusters. I googled a lot and found many useful links but I am not able to understand them - maybe because I have very little basic knowledge about databases and also they were in very techy language.

I need advice on these points:

1. What are database clusters in PostgreSQL?
2. How to create clusters in PostgreSQL?

Content Type	Original Author	Original Content on Stackoverflow
Question	Rajesh	View Question on Stackoverflow
Solution 1 - Postgresql	a_horse_with_no_name	View Answer on Stackoverflow
Solution 2 - Postgresql	constantine-d	View Answer on Stackoverflow

How to invoke sequence while inserting new record into postgresql table?

Postgresql Problem Overview

Postgresql Solutions

Solution 1 - Postgresql

Solution 2 - Postgresql

Alert for unsaved changes in form

What is the probability that the array will remain the same?

Attributions