May 2, 2016 · The at sign (@) is optional noise. The amounts of the different units are implicitly added with appropriate sign accounting. ago negates all the fields. This syntax is also used for …

Mar 21, 2013 · A type cast specifies a conversion from one data type to another. PostgreSQL accepts two equivalent syntaxes for type casts, the PostgreSQL-specific value::type and the …

Postgres offers 2 operators to get a JSON member: the arrow operator: -> returns type JSON or JSONB; the double arrow operator: ->> returns type text; We must also understand that we …

Mar 4, 2014 · How can I do such query in Postgres? IF (select count(*) from orders) > 0 THEN DELETE from orders ELSE INSERT INTO orders values (1,2,3);

In PostgreSQL, you can create the alias of a column or table with or without AS.. For example, you create person table, then insert 2 rows into it as shown below:

One thing non-intuitive thing is that for postgres, position is 1 based, not 0 based. For example select position('a' in 'abc') returns 1. And if there is no match it returns 0.

Nov 1, 2010 · In Postgres version 9.5 or higher you can use ON CONFLICT to avoid errors of contraints like @Arie mentioned above. To know more options related to this INSERT query …

May 4, 2018 · psql -h localhost -d postgres -U username -E. with an -E switch which gives you the details of the hidden commands that any alias is using. Once you are IN you can simply do a …

I have a table in PostgreSQL with many columns, and I want to add an auto increment primary key. I tried to create a column called id of type BIGSERIAL but pgadmin responded with an …

@leonbloy, if you don't quote when you create the table, then Postgres will lower case your table names and field names. You can use camel case when you write your queries but your result …