Which PostgreSQL function aggregates multiple rows into a single array?
Which command is used to remove privileges from a user or role?
Which PostgreSQL transaction isolation level provides the strictest isolation?
Which SQL operator checks if a subquery returns any rows?
Which database object provides a virtual table based on a query?
Which SQL command is used to undo changes made during the current transaction?
Which SQL command provides information about the execution plan of a query?
Which function returns the current date in PostgreSQL?
Which command is used to remove all rows from a table quickly without logging each row's removal?
Which SQL operation combines rows from two or more tables based on a related column?
Which SQL command is used to create a virtual table based on the result of a SELECT query?
Which function returns the current date and time in PostgreSQL?
Which SQL statement is used to add new rows to a table?
Which SQL command is used to make changes made during the current transaction permanent?
Which SQL join produces a Cartesian product of two tables?
Which SQL join returns all rows when there is a match in either left or right table?
Which PostgreSQL object helps improve the performance of queries by providing quick access to rows?
Which constraint ensures that values in a column satisfy a specified condition?
Which PostgreSQL function converts a string to a date?
Which SQL command creates a new table with the results of a query?
Which SQL keyword is used with the SELECT statement to specify where the output should be directed?
Which PostgreSQL feature automatically performs a specified action in response to certain events?
Which SQL term refers to a query nested inside another query?
Which SQL statement is used to perform conditional logic in a query?
Which command is used to remove an index from a table?
Which clause is used to combine rows from multiple tables based on a related column?
Which constraint ensures that all values in a column are different from each other?
Which command is used to prevent other transactions from accessing a table while it is being modified?
Which SQL operation returns rows that are common to two queries?
Which function returns NULL if two expressions are equal?
Which constraint ensures that the values in a column are unique and not null?
Which SQL clause is used to group rows that have the same values in specified columns?
Which SQL command is used to show the execution plan of a query?
Which keyword is used to remove duplicate rows from the result set?
Which operation combines rows from two tables based on a related column?
Which command is used to modify the structure of an existing table?
Which command is used to clean up dead rows and reclaim storage space in PostgreSQL?
Which SQL operator is used to check if a subquery returns any rows?
Which keyword is used to define a recursive common table expression (CTE)?
Which SQL clause is used to restrict the number of rows returned by a query?
Which value represents missing or undefined data in PostgreSQL?
Which PostgreSQL object defines a location on the file system where database objects are stored?
Which function returns the first non-null value in a list of arguments?
Which SQL keyword allows a subquery to refer to columns of preceding tables in the FROM clause?
Which command is used to restore a PostgreSQL database from a backup?
Which data type is used to store a collection of elements in PostgreSQL?
Which function aggregates multiple rows into an array?
Which SQL operator tests for the existence of rows returned by a subquery?
Which command is used to change the value of a runtime configuration parameter?
Which data type is used to store variable-length character strings?
Which function returns the first non-null expression among its arguments?
Which SQL clause is used to skip a specified number of rows in a query result?
Which SQL command is used to remove permissions from a user or role?
Which database object is used to generate unique numbers for primary keys?
Which PostgreSQL component allows automatic execution of specified actions in response to certain events?
Which command removes all rows from a table without logging individual row deletions?
Which database object executes a predefined action in response to an event on a table?
Which procedural language is used for writing functions and stored procedures in PostgreSQL?
Which graphical tool is used for managing PostgreSQL databases?
Which SQL clause is used to create recursive common table expressions (CTEs)?
Which command is used to quickly remove all rows from a table without logging individual row deletions?
Which SQL clause is used to define a common table expression (CTE)?
Which SQL command is used to rename a table in PostgreSQL?
Which SQL operation is used to combine rows from two tables based on a related column?
Which SQL clause is used to combine rows from two or more tables based on a related column?
Which SQL command is used to retrieve data from a PostgreSQL database?
Which data type is used to create an auto-incrementing integer column?
Which database object improves the speed of data retrieval operations?
Which data type is used to store long text strings without a maximum length?
Which command is used to reclaim storage occupied by dead tuples in PostgreSQL?
Which command is used to back up a PostgreSQL database?
Which SQL statement is used to modify existing records in a table?
Which PostgreSQL object encapsulates a set of SQL statements that can be executed as a unit?
Which PostgreSQL function is used to format dates and numbers as strings?
Which PostgreSQL object is the top-level container for tables, views, and other objects?
Which SQL keyword is used to remove duplicate rows from a result set?
Which data type is used to store universally unique identifiers in PostgreSQL?
Which function aggregates values into an array?
Which PL/pgSQL control structure repeatedly executes a block of code?
Which SQL command is used to give permissions to a user or role?
Which SQL extension allows you to calculate aggregate values for all possible combinations of grouping columns?
Which constraint is used to establish a relationship between columns in different tables?
Which PostgreSQL clause is used to define an auto-incrementing column?
Which function is used to extract a specific part (e.g., year, month) from a date or timestamp?
Which SQL command is used to insert data from one table into another table?
Which PostgreSQL function is used to match a string against a regular expression?
Which SQL keyword is used to ensure that the result set contains only unique rows?