WebJan 23, 2024 · Examples of DDL Commands : CREATE : It is used to create the database and its objects (like tables, functions, views, indexes, procedures, triggers). CREATE DATABASE database_name; This query … WebAug 3, 2024 · SQL Commit and Rollback. COMMIT and ROLLBACK are performed on transactions. A transaction is the smallest unit of work that is performed against a database. Its a sequence of instructions in a logical order. A transaction can be performed manually by a programmer or it can be triggered using an automated program.
SQL Commands Cheat Sheet - MySQL Commands Cheat Sheet …
WebOverview. DESCRIBE table is a SQL command that is accountable for showing detailed information about the structure or the schema of a specific table in a database, such as the names of the columns, datatypes of the columns, and the constraints applied to those columns. This article gives a complete overview of the use of the DESC command in … WebUsage Notes¶. This command does not show the object parameters for a table. Instead, use SHOW PARAMETERS IN TABLE ….. DESC TABLE and DESCRIBE VIEW are interchangeable. Either command retrieves the details for the table or view that matches the criteria in the statement; however, TYPE = STAGE does not apply for views because … how many people killed in parkland shooting
SQL Commands: DDL, DML, DCL, TCL, DQL - javatpoint
WebQuick Start RDDs, Accumulators, Broadcasts Vars SQL, DataFrames, and Datasets Structured Streaming Spark Streaming (DStreams) MLlib (Machine Learning) GraphX (Graph Processing) SparkR (R on Spark) PySpark (Python on Spark) API Docs. ... Describe Commands. DESCRIBE DATABASE; DESCRIBE TABLE; Webdescribe alert. describe external table. describe file format. describe function. describe masking policy. describe materialized view. describe password policy. describe pipe. describe procedure. describe row access policy. describe schema. describe secret. describe sequence. describe session policy. describe stage. describe stream. … WebMar 21, 2024 · Views in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the database. A View can either have all the rows of a table or specific rows based on certain condition. how many people killed in boston massacre