![]() ![]() Using the WRITETIME function in a SELECT statement to determine when the date/time that the column was written to the database. How to insert and retrieve data pertaining to TTL for columns. Potential changes include: Altering the length of fixed-length or varying-length character data types, and the length of fixed-length or varying-length graphic data types. A simple and lightweight SQL client desktop/terminal with cross database and platform support. Specify the data type change that you would like to make. A data type used in CREATE TABLE and ALTER TABLE statements, representing a single true/false choice. An 8-byte integer data type used in CREATE TABLE and ALTER TABLE statements. Determining time-to-live (TTL) for a column To alter the data type of a column: Issue an ALTER TABLE statement. The elements can be scalars or another complex type ( ARRAY, STRUCT, or MAP ).How to use CQL to display rows from an unordered partitioner. Displaying rows from an unordered partitioner with the TOKEN function. ![]() The most important reason people chose Sqlectron is: Sqlectron supports PostgreSQL, MySQL (and MariaDB), MSSQL Server, SQLite, and Cassandra. This tutorial shows the difference between these consistency levels and the number of replicas that participate to satisfy a request. Sqlectron is ranked 6th while Beekeeper Studio is ranked 15th. How to alter a table to add or delete columns or change table properties.Īdding or changing columns to a table with the ALTER TABLE command.Īdding or changing collection columns to a table with the ALTER TABLE command.Ĭhanging the data type of a column after it is defined or added to a table using ALTER TABLE.Ĭhanging the table properties after the table properties are defined or adding table properties to a table using ALTER TABLE.Īdding columns to a user-defined type with the ALTER TYPE command. How to batch insert or update data into a table.Īn index provides a means to access data in Cassandra using attributes other than the partition key for fast, efficient lookup of data matching a given condition. How to insert data into a table with either regular or JSON data. The data type, as described below, must be a system data type or a. How to create collections and user defined types (UDTs) in tables. The major SQL DDL statements are CREATE DATABASE and CREATE/DROP/ALTER TABLE. Introduction to Cassandra Query LanguageĬassandra Query Language (CQL) is a query language for the Cassandra database.ĬQL provides an API to Cassandra that is simpler than the Thrift API.Ī brief description on starting cqlsh on Linux and Mac OS X.Ĭreating a keyspace is the CQL counterpart to creating an SQL database. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |