com.mysql.cj.exceptions.InvalidConnectionAttributeException more than one time zone. You must configure either the server or JD value if you want to utilize time zone support.

DELETE FROM table_name WHERE condition; — Note: Be careful when deleting records in — a table! Notice the WHERE clause in the DELETE — statement. The WHERE clause specifies which record(s) — should be deleted. If you omit the WHERE clause, all records — in the table will be deleted! Here is what the above…

/Users/joseluisbz/.sqldeveloper/system18.1.0.095.1630/o.jdeveloper.db.connection/connections.xml Here is what the above code is Doing: 1. It’s getting the path to the connections.xml file. 2. It’s opening the file and reading it into a variable. 3. It’s using the xml.etree.ElementTree module to parse the XML. 4. It’s using the findall() method to find all the elements. 5. It’s looping through the…

try using “DISTINCT” instead of “GROUP BY”, then use the “PARTITION BY” clause inside the first_value. Here is what the above code is Doing: 1. The first_value function is used to get the first value of the “date” column for each “id” value. 2. The partition by clause is used to tell the first_value function…

SELECT FROM_UNIXTIME(1447430881); # 2015-11-13 10:08:01 SELECT FROM_UNIXTIME(1632406597); # 2021-09-23 16:16:37 SELECT FROM_UNIXTIME(1447430881,’%Y %D %M %h:%i:%s %x’); # 2015 13th November 10:08:01 2015 Here is what the above code is Doing: 1. The first SELECT statement converts the UNIX timestamp 1447430881 (which is the number of seconds between the Unix Epoch (January 1 1970 00:00:00 GMT)…

public interface CodeRepository extends JpaRepository { @Query(“select c.code, c.name, count(l) as amount from Code c join c.counterList l group by c.code, c.name”) List getSummary(); } Here is what the above code is Doing: 1. We are using the @Query annotation to define a custom query. 2. We are using the group by clause to group…

DEC2FLOAT = psycopg2.extensions.new_type( psycopg2.extensions.DECIMAL.values, ‘DEC2FLOAT’, lambda value, curs: float(value) if value is not None else None) psycopg2.extensions.register_type(DEC2FLOAT) Here is what the above code is Doing: 1. psycopg2.extensions.new_type() is a function that creates a new type caster. 2. psycopg2.extensions.DECIMAL.values is a tuple of the OID and the Python type that the OID represents. 3. ‘DEC2FLOAT’ is…