mydb=# create table test_desensitization(id integer,name varchar(32),phone_num varchar(11)); CREATE TABLE mydb=# insert into test_desensitization select num,‘name_‘||num,18500000000+(random()*90000000)::int from generate_series(1,100) g(num);; INSERT 0 100 mydb=# create table test_desensitization_result as select id,substring(name,1,2)||‘******‘||substring(name,length(name),1) as name,substring(phone_num,3)||‘****‘||substring(phone_num,length(phone_num) -3,4) as phone_num from test_desensitization ; SELECT 100 mydb=# select * from test_desensitization_result ; id | name | phone_num -----+-----------+------------- 1 | na******1 | 185****9782 2 | na******2 | 185****2419 3 | na******3 | 185****5163 4 | na******4 | 185****9263 5 | na******5 | 185****1941 6 | na******6 | 185****0390 7 | na******7 | 185****2158 8 | na******8 | 185****8646 9 | na******9 | 185****9253 10 | na******0 | 185****4371
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