npgsql

问题 I have some main table (like Companies) and a lot of dependent tables (like CompanyAddresses, CompanyPaymentInfos, etc.) in my Postgres DB: CREATE TABLE Companies ( Id uuid NOT NULL PRIMARY KEY, ...); CREATE TABLE CompanyAddresses( CompanyId uuid NOT NULL PRIMARY KEY REFERENCES Companies(Id), ...); CREATE TABLE CompanyPaymentInfos( CompanyId uuid NOT NULL PRIMARY KEY REFERENCES Companies(Id), ...); I use transactions from standard library in my C# code: private TransactionScope

问题 I have two servers connecting to a PostgresSQL 9.6 db hosted on Azure. The servers are doing one thing - hitting the Postgres db with a SELECT 1 query every 5 seconds. Typical time to connect to db and get data: Node: 25 MS .NET Core 3.1 using Npsql 4.1.1(I have tried 4.1.2 too, no diff): 500 MS My problem is that my .NET Core app is 20x slower than Node in getting data. I believe .NET Core is not pooling connections for some reason. This slowness occurs with both running the app locally and

问题 I'm using Postgresql on Windows in a C# application. The problem I'm having is really weird and can be described as follows: I restart my Windows I run the program One specific query fails: SELECT COUNT(*) AS c FROM files WHERE total_bytes IS NOT NULL I run the program again and everything works normally Weird notes: I tried making another query before that one (even using the same table) and it worked: SELECT COUNT(*) AS c FROM files I wasn't able to reproduce the error restarting Postgresql

问题 I'm using Postgresql on Windows in a C# application. The problem I'm having is really weird and can be described as follows: I restart my Windows I run the program One specific query fails: SELECT COUNT(*) AS c FROM files WHERE total_bytes IS NOT NULL I run the program again and everything works normally Weird notes: I tried making another query before that one (even using the same table) and it worked: SELECT COUNT(*) AS c FROM files I wasn't able to reproduce the error restarting Postgresql

问题 I have this Postgres/PostGIS query: UPDATE raw.geocoding SET the_geom = ST_Transform(ST_GeomFromText('POINT(((E'-96.6864379495382')::float8) ((E'32.792527154088')::float8))', 4326),3081) WHERE id=((10793455)::int4) When I run it, I get this error: ERROR: syntax error at or near "')::float8) ((E'" LINE 2: ...sform(ST_GeomFromText('POINT(((E'-96.6864379495382')::float8... ^ ********** Error ********** ERROR: syntax error at or near "')::float8) ((E'" SQL state: 42601 Character: 94 I'm

问题 I have this Postgres/PostGIS query: UPDATE raw.geocoding SET the_geom = ST_Transform(ST_GeomFromText('POINT(((E'-96.6864379495382')::float8) ((E'32.792527154088')::float8))', 4326),3081) WHERE id=((10793455)::int4) When I run it, I get this error: ERROR: syntax error at or near "')::float8) ((E'" LINE 2: ...sform(ST_GeomFromText('POINT(((E'-96.6864379495382')::float8... ^ ********** Error ********** ERROR: syntax error at or near "')::float8) ((E'" SQL state: 42601 Character: 94 I'm

问题 So I am having an issue installing npgsql.dll and mono.security.dll. I've been trying to figure this out for so long... please help. Here are the steps I've done... Download zip file from https://github.com/npgsql/npgsql Go into Visual Studio and start new project. C# Command (not sure which specific project I was supposed to create) Create a strong key name Then I try to install the .dll files using gacutil In the zip file I've downloaded in step 1, I cannot find Npgsql.dll and Mono.Security

问题 So I am having an issue installing npgsql.dll and mono.security.dll. I've been trying to figure this out for so long... please help. Here are the steps I've done... Download zip file from https://github.com/npgsql/npgsql Go into Visual Studio and start new project. C# Command (not sure which specific project I was supposed to create) Create a strong key name Then I try to install the .dll files using gacutil In the zip file I've downloaded in step 1, I cannot find Npgsql.dll and Mono.Security

问题 My query is like this: select * from plat_customs_complex where (code_t,code_s) in (('01013090','10'),('01029010','90')); It runs well in psql console. My question is how to perform this query in client code.(via C# or Java) And I already know the following code works well(C#): string[] codeT = new string[]{"01013090","01029010"}; connection.Query("SELECT * FROM plat_customs_complex WHERE code_t=ANY(@CodeT)", new { CodeT = codeT }); 回答1: Finally, I found the unnest function can help. Pure SQL

问题 I am getting the following error when trying to open my Postgresql database from a C# utility: System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host I have tried running this program from a remote computer and from the computer on which the Postgresql server is running. There are no firewalls on either