How to Compare Arrays How to Concatenate Strings How to Convert the Case of a String How to Create an Array How to Insert Data Into an Array How to Query Arrays How to Use string_agg() Database Management How to Create a Table How to Drop a Table How to Rename a Table How to Trun...
string_agg()를 사용하여 PostgreSQL에서 문자열 연결 string_agg()는 null 문자가 없는 문자열을 결합합니다. 열 이름과 구분 기호(예: 쉼표, 대시, 문자)를 입력으로 사용합니다. ...
Now that the PostgreSQL community has released version 16, I thought it would be the perfect opportunity to talk to a wider audience, especially if you did not have the chance to join us in Canada. In my talk, I focused on the exciting new features introduced in version 16, but I also...
Array_to_string:The array_to_string function in PostgreSQL functions similarly to the group_concat function used in other databases. We can use this function by using the array_agg function in PostgreSQL. Both the function together same work as the group_concat function. Array_agg:This function...
The PostgreSQL database also does not support the SQLPIVOToperator. Therefore, when creating pivot tables, it is important to use theCASEstatement with conditional aggregation.The query below is an example of the conditionalCASEstatements used to create pivot tables in PostgreSQL. ...
How would I use this to only return distinct values concatenated? I thought I could use distinct in a subquery and then use string_agg to query those values, but that doesn't work: Select STRING_AGG(t0."SO", ',') "SO" from ( SELECT distinct 1 "SO" from [table name] t0) t0 ...
Worry not because there are ample options to easily create and monitorcustom metricswith Azure Database for PostgreSQL. One solution you can use with Postgres on Azure isDatadog’s custom metrics. If you are not familiar with Datadog, it is one of many solid...
For reporting purposes, Crucible administrators might want to retrieve all reviews and their respective states, commits, JIRA issue keys, number of files being reviewed, and number of comments from a Crucible project directly from the data...
In your scenario, if you have the full backup in 13th and the continuous sequence of log backups, you can use them to restore by following steps below. A continuous sequence of log backups is called a log chain which starts with the first full backup of the database....
Each key weighs 780. One way to reduce the size of a binary key is to hash it. In PostgreSQL we can usemd5(yes, it is insecure, but fine for our purposes). Let's see what is the size of the blob hashed using md5: >selectavg(pg_column_size(md5(array_to_string(blob,''...