1. Create table¶

1.1. Synopsis¶

CREATE TABLE <table_name> [ IF NOT EXISTS ] ( [
  { <column_name> <data_type> }
  [, ... ]
] )
[ SHARD_SIZE [=] <duration> ]

1.2. Description¶

CREATE TABLE will create a new table in a QuasarDB cluster with the specified schema. A special timestamp column is automatically created, which is what new data will be indexed on. If table_name already exists, CREATE TABLE will fail, unless IF NOT EXISTS is specified, in which case it will succeed and keep the original table intact.

1.3. Parameters¶

table_name: The name of the table to be created. Can be alphanumeric, but is not allowed to start with a number.
column_name: The name of a column to be created in the new table. Can be alphanumeric, but is not allowed to start with a number.
data_type: The data type to be associated with the column. Can be any of INT64, DOUBLE, BLOB or TIMESTAMP.
duration: The size (as time duration) of a single shard (bucket). The syntax is described in section Durations.

1.4. Examples¶

Create a table with only a single column:

CREATE TABLE example (my_int INT64)

Create a table with multiple columns:

CREATE TABLE example (my_int INT64, my_double DOUBLE, my_blob BLOB, my_ts TIMESTAMP)

Create a table with a custom shard size:

CREATE TABLE example (my_double DOUBLE) SHARD_SIZE = 1hour 2min 3s

Creates the table as specified if it does not exists, leaves the existing table untouched if it does exist:

CREATE TABLE IF NOT EXISTS example (my_int INT64)

Previous Next