Experts in Postgres and Open Source Infrastructure

To Connect to PostgreSQL From VS Code, launch the VS Code, press “CTRL + Shift + X” to open the Extensions view, select the “PostgreSQL” extension, and Install” it.

The transaction_timestamp() function returns the timestamp for the current transaction. This function does not need any argument.

RAISE NOTICE is used to raise an error and report a message and that error is reported back to the user. It is followed by a format that is basically the string we want to show to the user.

The strpos() is a built-in function in PostgreSQL that is used to determine the position/location of a sub-string in a main string.

The array_fill() is a function that fills an array with a specified argument. The dimensions of that array are also specified in that function as an argument.

In PostgreSQL, the regexp_match() function matches a regular expression in a specified main string. This function takes in the string and the regular expression to be matched along with a flag and returns the first matched substring from the main string.

Let’s get into the details of the regexp_match() function.

How Does PostgreSQL regexp_match() Function Do?

The regexp_match() function works almost the same as the regexp_matches() function. It basically returns …

In Postgresql, the regexp_split_to_array() function is used to split the specified string into an array using the specified POSIX regular expressions

The regexp_split_to_table() function takes the string, the regexp, and the flag(if any) as arguments and returns a table column that contains the string characters with the Regexp as separators.

The array_dims() gives out the information about the dimensions of an array. The array_dims() takes an array as a parameter and returns text that shows array dimensions.

To enable a trigger in PostgreSQL, the “ALTER TABLE” statement is used with the “DISABLE TRIGGER” clause. We need to specify the name of the trigger associated with a particular table in case of enabling one trigger.