摘要:
postgreSQL script: create table School -- 創建表 ( SchoolId char(5) NOT NULL PRIMARY KEY, SchoolName varchar(500) NOT NULL DEFAULT '', SchoolTelNo varcha 阅读全文
摘要:
postgreSQL 17.01 SELECT 'S0001' AS STU, unnest(string_to_array('G,E,O,V,I,N,D,U,B,,A,B,C,D,A,B,D,B,C,C,B,A,B,D,A,C,D,A,B,D,A,D,C,B,D,B,D,B,A,C,D,A,C,D 阅读全文