Altering the sequence is a process of modifying the sequence of numbers in a series. For altering the sequence, we will use “Alter Sequence” and “Increment” commands. This blog illustrates those commands with examples.
In Snowflake, we can create a number sequence through the “create sequence” command. After creating the sequence, we can alter the sequence. In this blog, we will discuss altering the sequence.
By default, auto-incrementing columns start at 1. But, sometimes, we want them to begin at a different number or/and increment by a different amount. These numbers are called “sequences.” The syntax for creating Sequences:
create sequence sequence_name
start = number1;
increment = number1;
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Examples:
create sequence odd_numbers
start = 1;
increment = 2;
create sequence positive_numbers
start = 0;
increment = 1;
For altering the sequences, we should use the “ALTER SEQUENCE” command:
alter sequence odd numbers
set increment = 11;
2. Setting a Comment for the Sequence
alter sequence odd_numbers
set comment = ‘odd dozens’
3. Renaming the Sequence
alter sequence odd_numbers rename to odd_numbers_dozens;
In Snowflake, we will create the sequence to print the numbers in order. When we want to change the order, we will alter the sequence. I hope this article gives you sufficient information about Altering the Sequence in Snowflake.
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