postgresql

问题 I want to track username changes overtime. I have the following users table in Redshift: id username valid_from valid_to current -------------------------------------------------------- 1 joe1 2015-01-01 2015-01-15 No 1 joe2 2015-01-15 NULL Yes My source data is from RDS Postgres. I'm thinking of several options on how to handle this: 1) Create users_history table and start tracking this inside RDS Postgres db. This requires me making changes to my app and this table potentially can get huge

问题 I want to track username changes overtime. I have the following users table in Redshift: id username valid_from valid_to current -------------------------------------------------------- 1 joe1 2015-01-01 2015-01-15 No 1 joe2 2015-01-15 NULL Yes My source data is from RDS Postgres. I'm thinking of several options on how to handle this: 1) Create users_history table and start tracking this inside RDS Postgres db. This requires me making changes to my app and this table potentially can get huge

问题 I have a docker container based on Postgres's official docker image. I want to see the incoming queries when I look at the logs of the docker container using docker logs -f . This is my Dockerfile: FROM postgres:11.1-alpine COPY mock_data.sql /docker-entrypoint-initdb.d/mock_data.sql ENV PGDATA=/data and this is the part of my docker-compose.yml file related to this service: version: '3' services: mock_data: image: mock_data container_name: mock_data ports: - 5434:5432/tcp What is the

问题 I have a docker container based on Postgres's official docker image. I want to see the incoming queries when I look at the logs of the docker container using docker logs -f . This is my Dockerfile: FROM postgres:11.1-alpine COPY mock_data.sql /docker-entrypoint-initdb.d/mock_data.sql ENV PGDATA=/data and this is the part of my docker-compose.yml file related to this service: version: '3' services: mock_data: image: mock_data container_name: mock_data ports: - 5434:5432/tcp What is the

问题 I get the following exception in my application after leaving a database connection idle for some amount of time: ... An I/O error occured while sending to the backend.; nested exception is org.postgresql.util.PSQLException: An I/O error occured while sending to the backend.] with root cause java.net.SocketException: Operation timed out at java.net.SocketInputStream.socketRead0(Native Method) The same issue happens in psql AND I don't have issues connecting to a local database, so I'm pretty

问题 I have a select query running very long. How will I get a status of that query, like how long will it be running? Whether it is accessing a data from the tables or not. Note : As per pg_stat_activity the query state is shown as active and not in a waiting state. Like in Oracle, we can see the source/target and processing status of a query - is there something like this in postgresql? 回答1: Based on @Anshu answer I am using: SELECT datname, pid, state, query, age(clock_timestamp(), query_start)

问题 I have a select query running very long. How will I get a status of that query, like how long will it be running? Whether it is accessing a data from the tables or not. Note : As per pg_stat_activity the query state is shown as active and not in a waiting state. Like in Oracle, we can see the source/target and processing status of a query - is there something like this in postgresql? 回答1: Based on @Anshu answer I am using: SELECT datname, pid, state, query, age(clock_timestamp(), query_start)

问题 I have a select query running very long. How will I get a status of that query, like how long will it be running? Whether it is accessing a data from the tables or not. Note : As per pg_stat_activity the query state is shown as active and not in a waiting state. Like in Oracle, we can see the source/target and processing status of a query - is there something like this in postgresql? 回答1: Based on @Anshu answer I am using: SELECT datname, pid, state, query, age(clock_timestamp(), query_start)

问题 I have a select query running very long. How will I get a status of that query, like how long will it be running? Whether it is accessing a data from the tables or not. Note : As per pg_stat_activity the query state is shown as active and not in a waiting state. Like in Oracle, we can see the source/target and processing status of a query - is there something like this in postgresql? 回答1: Based on @Anshu answer I am using: SELECT datname, pid, state, query, age(clock_timestamp(), query_start)

问题 I have a select query running very long. How will I get a status of that query, like how long will it be running? Whether it is accessing a data from the tables or not. Note : As per pg_stat_activity the query state is shown as active and not in a waiting state. Like in Oracle, we can see the source/target and processing status of a query - is there something like this in postgresql? 回答1: Based on @Anshu answer I am using: SELECT datname, pid, state, query, age(clock_timestamp(), query_start)