问题描述
我的函数得到了结果
EXECUTE format('SELECT ARRAY (SELECT tvmid from "%s".tvmtable order by tvmid)',operatorName) INTO tvms;
以 {1,2,3} 格式给出 mi tvm 数组。我需要它有一个用 分隔的字符串,所以我正在尝试
SELECT ARRAY_TO_STRING(tvms,",") INTO res;
ERROR: column "," does not exist
如果有帮助,这就是我的全部功能
create or replace function getTVMList(operatorName varchar)
returns varchar as $$
declare
tvms varchar[];
res varchar;
begin
EXECUTE format('SELECT ARRAY (SELECT tvmid from "%s".tvmtable order by tvmid)',operatorName) INTO tvms;
SELECT ARRAY_TO_STRING(tvms,") INTO res;
return res;
end;
$$
language plpgsql;
解决方法
双引号引用列名。
您必须将逗号放入单引号而不是双引号中:','
SELECT ARRAY_TO_STRING(tvms,',') INTO res;