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40fb17791e
Commit the whole ./lib/ folder which stores the Crystal dependencies. This has a few benefits: - Allows to build the project without a connection to the Internet to retrieve dependencies. - Makes the project resistant against dependency re-tags which might include malicious code.
27 lines
683 B
Crystal
27 lines
683 B
Crystal
require "db"
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require "../src/sqlite3"
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DB.open "sqlite3://%3Amemory%3A" do |db|
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db.exec "create table contacts (name text, age integer)"
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db.exec "insert into contacts values (?, ?)", "John Doe", 30
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args = [] of DB::Any
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args << "Sarah"
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args << 33
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db.exec "insert into contacts values (?, ?)", args
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puts "max age:"
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puts db.scalar "select max(age) from contacts" # => 33
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puts "contacts:"
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db.query "select name, age from contacts order by age desc" do |rs|
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puts "#{rs.column_name(0)} (#{rs.column_name(1)})"
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# => name (age)
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rs.each do
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puts "#{rs.read(String)} (#{rs.read(Int32)})"
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# => Sarah (33)
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# => John Doe (30)
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end
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end
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end
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