Questions tagged [sequence]
An object that can generate unique integers.
201 questions
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Two sequences associated with one identity column
One of my clients has a database in which a single identity column
(called id in that table) has two sequences associated with it(!)
Both sequences display
Sequence for identity column: <schema>....
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Is concurrently using nextval with generate_series guaranteed to return incremental values?
I need to obtain multiple values from a sequence with only one query. On Stack Overflow I found this:
https://stackoverflow.com/questions/896274/select-multiple-ids-from-a-postgresql-sequence
The ...
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Can a new transaction claim an older sequence id?
I'm using a PostgresSQL database as an eventstore. We used to use https://github.com/SQLStreamStore/SQLStreamStore
But they had issues when having a lot of parallel transactions.
Essentially we ...
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ANSI SQL - Generate a sequence and get values
wondering if the ANSI SQL standard has a portable way to create a sequence object and get values from it?
I can't find a portable way, but search engines seem to confuse ANSI sql with MS SQL server, ...
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Is it possible to change the sequence backing an identity column?
After a machine malfunction and a hurried transfer of data onto another machine, we have somehow ended up with some brand new sequences replacing old sequences as the backing for identity columns (and ...
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Trying to renumber a field in order grouping by another
So I have a table that has a column labeled 'sequence', it is not in fact a sequence data type, just a numeric field that translates in the object model to show items in a certain order. In a handful ...
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(PostgreSQL) Insert a tuple containing specific value in a column linked to a sequence
I started writing this post as a question but, while reproducing the error, I found the solution in the PostgreSQL documentation. So I'll share the solution here for the community.
A PostgreSQL 14 ...
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Any way to debug an Oracle Sequence?
Somewhere in a large project a sequence is being incremented one too many times. Is there some way to add a trigger or watch to the sequence when .NEXTVAL is invoked so we can get a call stack and see ...
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PostgreSQL Tables Without Unique Constrtaint On Sequence
I use PostgreSQL. Is there a query to get a list of all tables that do not have the unique constraint on the sequence column? If it helps forming a query I use "reference" for my sequence ...
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Query for repeating sequences in SQLite
I have an SQLite DB, let's assume the id can be considered as the order of rows, I want to find repeating sequences in the table according to certain criteria.
consider this example (http://sqlfiddle....
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PosgtreSQL — Is it possible to specify a sequence name in a GENERATED BY DEFAULT AS IDENTITY column?
When using PHP’s lastInsertId() method with PostgreSQL, it’s necessary to know the name of the sequence.
If I defined the column using GENERATED BY DEFAULT AS IDENTITY, I know I can get the sequence ...
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How to find missing number from different ranges
I have a table with two columns, one containing name and other numbers. For each name there is range of numbers and there are around 250 names in there. Range of every name is different. It may be 1 ...
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How to increase sequence by condition in Oracle Database 19.x?
We have the table as below.
CREATE TABLE "STYLES" (
"STYLE_CODE" CHAR(8) GENERATED ALWAYS AS
("COLOR"||"FEATURE"||"SIZE"||"YEAR")...
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PGPOOL Load Balancing: Create Sequence is going to replica
I created a pgpool instance which can connect to one master database(primary for write) and one read replica.
I have enabled below parameter:
disable_load_balance_on_write='dml_adaptive';
Now my ...
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How to use setval into a function?
I created a trigger function to set the value of a sequence in a remote database table, using dblink and setval.
CREATE OR REPLACE FUNCTION my_function () RETURNS TRIGGER AS $$
DECLARE
...
BEGIN
...
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