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24 lines
741 B
Ruby
24 lines
741 B
Ruby
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class DbHelper
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REMAP_SQL ||= "
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SELECT table_name, column_name
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FROM information_schema.columns
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WHERE table_schema = 'public'
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AND is_updatable = 'YES'
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AND (data_type LIKE 'char%' OR data_type LIKE 'text%')
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ORDER BY table_name, column_name"
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def self.remap(from, to)
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connection = ActiveRecord::Base.connection.raw_connection
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remappable_columns = connection.async_exec(REMAP_SQL).to_a
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args = [from, to, "%#{from}%"]
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remappable_columns.each do |rc|
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table_name = rc["table_name"]
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column_name = rc["column_name"]
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connection.async_exec("UPDATE #{table_name} SET #{column_name} = REPLACE(#{column_name}, $1, $2) WHERE #{column_name} LIKE $3", args) rescue nil
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end
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end
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end
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