如果我们使用的是 PostgreSQL 数据库,可以通过其内置 generate_series() 函数来实现,该方法可以按不同的规则用来产生一系列的填充数据,下面通过样例进行演示。 1,准备工作 首先我们创建一张 people 表用于插入测试数据,具体如下: 1 2 3 4 5 6 7 8 9 create table people ( id integer, name varchar(32), ...
更多关于uuid的,可以去参考postgresql的官方文档方法3:数据库函数生成uuidcreate or replace function random_string(integer) returns text as $body$ select array_to_string(array(select substring('0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' FROM (ceil(random()*62))::int FOR 1) FROM ...
OpenSSL - Generate random string zzh@ZZHPC:~$ openssl rand -hex64273fabd76b8dd62621325e4b04af332dd739702ae553ffc034a4af205faedbfee21202d3808e3640770b682c151aaa8308871533572d60947724b93850dc731c zzh@ZZHPC:~$ openssl rand -hex32dadb73182b410848a9bd2442736a519b26f7de7ffcb89a2b68a126adbed40d...
执行上面的命令后,出现多个 CREATE FUNCTION 且没报错,则表明安装成功。 解决Postgresql 报 ERROR: function uuid_generate_v4() does not exist 异常问题 方案三:自定义函数,替代 uuid 的生成方法。 create or replace function random_str_uuid(integer) returns text as $body$ select array_to_string(array(se...
Oracle实现POSTGRESQL的generate_series功能 PostgreSQL 有生成序列的函数,能够方便的进行造数据。这里我用ORACLE实现了PGSQL的generate_series函数功能。POSTGRESQL.t_girl=# select * fromgenerate_series(1,10);generate_series--- 1 2 sql oracle postgresql ...
Use random.choice Sample Solution: Python Code: importrandomimportstringprint("Generate a random alphabetical character:")print(random.choice(string.ascii_letters))print("\nGenerate a random alphabetical string:")max_length=255str1=""foriinrange(random.randint(1,max_length)):str1+=random.choice...
Below is a PostgreSQL example that uses generate_series to generate ASP.NET gridview column markup for a month column cross tab. Originally I used AutogenerateColumns=true property of a grid view, but I needed to manipulate the formatting of my columns so that was a bit less than satisfying...
# Go 1.16 and above: go install github.com/volatiletech/sqlboiler/v4@latest go install github.com/volatiletech/sqlboiler/v4/drivers/sqlboiler-psql@latest # Go 1.15 and below: # Install sqlboiler v4 and the postgresql driver (mysql, mssql, sqlite3 also available) # NOTE: DO NOT run this ...
Raider requires a MySQL to be running on your host (it is unfortunately not compatible with PostgreSQL and others, at the moment). The Raider SQL schema should be imported in the Raider database you created, which you can find at raider.sql. Configuration Use the sample config.cfg configurat...
By using the "Random text using mask" fill type, you can generate strings that match a defined pattern. You can use the "random text using mask" generator with any data column that has a data type that accepts a string (char, varchar, clob, string, text, etc...) and user-defined ...