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#### Situation
- Redshift returns _all_ results immediately when you invoke `dbSendQuery`. It does not wait for `dbFetch`.
- Invoking `head` on a `tbl_sql` will invoke `collect`, and thus `dbSendQuery…
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MySQL 5.7.20 /PostgreSQL 8.2.15 (Greenplum Database 4.3.7.1 build 1)
ERROR INFO:
psycopg2.ProgrammingError: UNIQUE index must contain all columns in the distribution key of relation "test_table"
…
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# gpcc 安装记录
gpcc（Greenplum Command Center）是pivotal提供的Greenplum性能监控工具, 可监控各segment的状态、内存使用情况、磁盘io. 安装包可以在[这里](https://network.pivotal.io/products/pivotal-gpdb)下载
安装步骤：
1. 执行下面的命令，建立名为gpperfmon…
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We use C# .NET (Client) and connect to Greenplum database (server) using Npgsql connector v 3.2.4.0 to Postgres v 8.2 . We have a use case where we need to run concurrent queries in parallel within th…
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I'm porting Postmodern to an implementation that is not in closer-mop. So far, the effort was surprisingly simple, with only four lines of code (with most effort being in the supporting libraries). Th…
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I wrote this question before to know about GitHub/hadley/dplyr.
http://stackoverflow.com/questions/21592266/i-cannot-connect-postgresql-schema-table-with-dplyr-package
Thanks for dplyr, ggplots, resh…
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I get unable to download "Unfortunately, we are unable to provide you with access to download software at this time. Please contact export@pivotal.io for assistance." When trying to download Greenplum…
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目前生产数据里表比较大，每天的增删改操作比较多，当需要同步的表过多，或者系统表逐渐膨胀的时候，dbMetaData = conn.getMetaData();
rs = dbMetaData.getTables();
rs = dbMetaData.getPrimaryKeys();
几个方法光校验表和主键就要花费10多分钟的时间，会影响数据同步的效率。
查询了POSTGRESQL里J…
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Due by: 02/02
Following successful #164
### Acceptance criteria
- [x] Server deployed to prod
- [x] Schema and users migrated
- [x] trusted connections file
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**Migrated issue, originally created by Patrick Buxton**
The error shown below is seen when testing a dialect with:
```
@property
def json_type(self):
return exclusions.closed()
```
…