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Category Archives: Databases
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T-SQL Built-in Functions Creating a User-Defined Function Unlike the output of a stored procedure, the result of a UDF can be accessed in a select statement While Loops
Posted in Databases
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Full-Text Search with SQL Server 2008
The full-text search capabilities of SQL Server 2008 make it possible to search text across multiple columns, weight search terms, and search by proximity. A full-text query can be much faster than the equivalent LIKE query. The first step is … Continue reading
Posted in SQL, SQL Server
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Importing a Shapefile into PostgreSQL
I tried to import a shapefile to a PostgreSQL database using SPIT in QGIS, but kept getting an error because the gid column already existed in the .dbf. So I used the command line instead: shp2pgsql Downloads/Archive/data_dev.shp > data.sql then … Continue reading
Posted in PostgreSQL
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Taking the top 5 of grouped ranked data in PostgreSQL
Working from a list of my ancestors’ occupations I wanted to list the top 5 occupations in each occupational category per decade, so that given year category description total … 1851 Agriculture Ag Lab 4 1851 Agriculture Farm Bailiff 1 … Continue reading
Posted in PostgreSQL, SQL
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Creating a Rails 3 Project with PostgreSQL and TextMate on a Mac OS X Machine
I was advised to use RVM to manage Ruby on the Mac. Sign up as an Apple developer Download and install XCode Follow the instructions for installing RVM. Install RVM by executing $ bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head ) in … Continue reading
Posted in PostgreSQL, Ruby on Rails
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Checking if FullText Service is installed on SQL Server 2008
SELECT FullTextServiceProperty(‘IsFullTextInstalled’) This will return 1 if the service is installed.
Posted in SQL Server
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Concatenating column from many side of one-to-many into single record using STUFF
SELECT OneTable.col1, OneTable.col2, STUFF ( ( SELECT ‘ ‘ + mt.col1 FROM ManyTable mt WHERE mt.foreignkeycol = OneTable.primarykeycol FOR xml path(”) ), 1, 1, ” ) AS concatenatedcol FROM OneTable Note: remember the ” in the inner SELECT statement, otherwise … Continue reading
Posted in SQL
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