This question already has answers here: How should I deal with "package 'xxx' is not available (for R version x.y.z)" warning?
We are having MS SQL 2008 as database with Hibernate. Now we are planning to move on to 开发者_Python百科Postgres.
So I have SHA1 varchar sting like \'LQSVPLQSVPSYKLMTY7P5SVPSYN54CMGU\' = 32 bytes in database. How do I can convert it to binary sting?
Today my boss told me to use count(pkColumn) instead of count(*), saying it will be faster. I\'m pretty sure this isn\'t true, but I\'m less a DBA than a Java developer so I wanted to check.
I have a somewhat detailed query in a script that uses ? placeholders.I wanted to test this same query directly from the psql command line (outside the script).I want to avoid开发者_Python百科 going i
I am using PostgreSQL 9.0.3 on RedHat.The database contains two schemas, public and wh. I cr开发者_如何学编程eated a new role called django. I want this user to use the wh schema as it\'s default.
I\'m trying to install Sphinx search server with pgsql and I have this error: \"unknown type \'pgsql\'; skipping;\"
I have table with column \"date\" and type Date in format: \"2011-09-06\" and i want to execute query:
I\'ve implemented store_mapping extension but it currently uses ObjectAsStringMapping. As a result I can read array values from database but any insert or update causes underlying postgresql driver er
Assuming I have the tables student, club, and student_club: student { id name } club { id name } student_club {
加载中,请稍侯......