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SQL Commands

This part contains reference information for the SQL commands supported by Tacnode. By “SQL” the language in general is meant; information about the standards conformance and compatibility of each command can be found on the respective reference page.

Table of Contents

ABORT — abort the current transaction
ALTER DATABASE — change a database
ALTER DEFAULT PRIVILEGES — define default access privileges
ALTER EXTENSION — change the definition of an extension
ALTER FOREIGN DATA WRAPPER - change the definition of a foreign-data wrapper
ALTER FUNCTION — change the definition of a function
ALTER FOREIGN TABLE - change the definition of a foreign table
ALTER MATERIALIZED VIEW — change the definition of a materialized view
ALTER POLICY - change the definition of a row-level security policy
ALTER SCHEMA — change the definition of a schema
ALTER SEQUENCE — change the definition of a sequence generator
ALTER SERVER — change the definition of a foreign server
ALTER TABLE — change the definition of a table
ALTER USER MAPPING — change the definition of a user mapping
ALTER VIEW — change the definition of a view
ANALYZE — collect statistics about a database
BEGIN — start a transaction block
CHECKPOINT — force a write-ahead log checkpoint
COMMENT — define or change the comment of an object
COMMIT — commit the current transaction
COPY — copy data between a file and a table
CREATE DATABASE — create a new database
CREATE EXTENSION — install an extension
CREATE FOREIGN DATA WRAPPER — define a new foreign-data wrapper
CREATE FUNCTION — define a new function
CREATE FOREIGN TABLE — define a new foreign table
CREATE MATERIALIZED VIEW — define a new materialized view
CREATE POLICY - define a new row-level security policy for a table
CREATE SCHEMA — define a new schema
CREATE SEQUENCE — define a new sequence generator
CREATE SERVER — define a new foreign server
CREATE TABLE — define a new table
CREATE TABLE AS — define a new table from the results of a query
CREATE USER MAPPING — define a new mapping of a user to a foreign server
CREATE VIEW — define a new view
DEALLOCATE — deallocate a prepared statement
DELETE — delete rows of a table
DISCARD — discard session state
DROP DATABASE — remove a database
DROP EXTENSION — remove an extension
DROP FOREIGN DATA WRAPPER — remove a foreign-data wrapper
DROP FUNCTION — remove a function
DROP FOREIGN TABLE — remove a foreign table
DROP MATERIALIZED VIEW — remove a materialized view
DROP POLICY - remove a row-level security policy from a table
DROP SCHEMA — remove a schema
DROP SEQUENCE — remove a sequence
DROP SERVER — remove a foreign server descriptor
DROP TABLE — remove a table
DROP USER MAPPING — remove a user mapping for a foreign server
DROP VIEW — remove a view
END — commit the current transaction
EXECUTE — execute a prepared statement
EXPLAIN — show the execution plan of a statement
GRANT — define access privileges
IMPORT FOREIGN SCHEMA — import table definitions from a foreign server
INSERT — create new rows in a table
PREPARE — prepare a statement for execution
REASSIGN OWNED — change the ownership of database objects owned by a database role
REFRESH MATERIALIZED VIEW — replace the contents of a materialized view
REINDEX — rebuild indexes
RELEASE SAVEPOINT — destroy a previously defined savepoint
RESET — restore the value of a run-time parameter to the default value
REVOKE — remove access privileges
ROLLBACK — abort the current transaction
ROLLBACK TO SAVEPOINT — roll back to a savepoint
SAVEPOINT — define a new savepoint within the current transaction
SELECT — retrieve rows from a table or view
SELECT INTO — define a new table from the results of a query
SET — change a run-time parameter
SET ROLE — set the current user identifier of the current session
SET TRANSACTION — set the characteristics of the current transaction
SHOW — show the value of a run-time parameter
START TRANSACTION — start a transaction block
TRUNCATE — empty a table or set of tables
UPDATE — update rows of a table
VALUES — compute a set of rows