使用Postgresql 实现快速插入测试数据

create table t_centerprises(
objectid bigint not null, /*唯一编号(6位行政区号+6位sn)*/
divid uuid not null, /*行政区唯一代码*/
name text not null, /*企业名称*/
address text not null, /*企业地址*/
post text, /*企业邮编*/
contacts text, /*联系人*/
tel text, /*联系电话*/
fax text, /*传真*/
describe text, /*企业备注*/
date timestamp default now() not null, /*创建日期*/
constraint pk_centerprisess_objectid primary key (objectid),
constraint fk_centerprises_divid foreign key(divid) references ts_divisions(objectid) on delete cascade
);
create index idx_centerprises_divid on t_centerprises(divid);

/*转换16进制到字符*/
drop function if exists hex_to_string(text);
create or replace function hex_to_string( text)
returns text as
$$
declare
result text;
begin
execute ‘select U&”\’ || $1 || ”” INTO result;
return result;
end;
$$ language plpgsql;

/*随机生成汉字
汉字范围U+4E00..U+9FA5
*/
drop function if exists gen_random_zh(int,int);
create or replace function gen_random_zh(imin int,imax int)
returns text as
$$
declare
vlen integer;
result text;
begin
result := ”;
vlen = floor(random()*(imax-imin)+imin);
for i in 1..vlen loop
result := result || hex_to_string(to_hex(floor(random()*(42191-19968)+19968)::integer));
end loop;
return result;
end;
$$ language plpgsql;

insert into t_centerprises(objectid,divid,name,address,post,contacts,tel,fax,describe)
select (vdivid|| lpad(id::text,6,’0′))::bigint as objectid,’110101′,
gen_random_zh(5,25) as name,gen_random_zh(10,50) as address,
floor(random()*(699999-600000)+600000) as post,gen_random_zh(2,8) as contacts,
floor(random()*(69999999-60000000)+60000000) as tel,floor(random()*(69999999-60000000)+60000000) as fax,
gen_random_zh(32,128) as describe
from generate_series(1,5000000) as id;

do $$
declare vStart bigint;
declare vEnd bigint;
declare MAXVALE bigint;
declare INTERVAL bigint;
declare vprovince integer;
declare vprefecture integer;
declare vcounty integer;
declare vdivid text;
declare vdividex uuid;
begin
vprovince := 10;vprefecture := 1;vcounty := 1;

MAXVALE := 1000000;
INTERVAL := 1000; vStart := 1 ;vEnd := INTERVAL;
vdivid := (lpad(vprovince::text,2,’0′) || lpad(vprefecture::text,2,’0′) || lpad(vcounty::text,2,’0′))::text;
vdividex := (select objectid from ts_divisions where province=vprovince and prefecture=vprefecture and county=vcounty);
loop
insert into t_centerprises(objectid,divid,name,address,post,contacts,tel,fax,describe)
select (vdivid|| lpad(id::text,6,’0′))::bigint as objectid,vdividex as divid,
gen_random_zh(5,25) as name,gen_random_zh(10,50) as address,
floor(random()*(699999-600000)+600000) as post,gen_random_zh(2,8) as contacts,
floor(random()*(69999999-60000000)+60000000) as tel,floor(random()*(69999999-60000000)+60000000) as fax,
gen_random_zh(32,128) as describe
from generate_series(vStart,vEnd) as id;

raise notice ‘%’, vEnd;
vStart := vEnd + 1; vEnd := vEnd + INTERVAL;
if( vEnd > MAXVALE ) then
return;
elsif(vEnd = MAXVALE) then
vEnd := vEnd – 1;
end if;
end loop;
end$$;

create table tbl_test (id int, info text, c_time timestamp);
insert into tbl_test select generate_series(1,100000),md5(random()::text),clock_timestamp();
select count(id) from tbl_test; –查看个数据条数