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All Tags » sql server » Defensive progr... » Transact SQL (RSS)
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In most cases LIKE conditions should by followed by ESCAPE clauses. Let me give you an example. Consider the following table, sample data, and stored procedure:
CREATE TABLE Data.Messages(Subject VARCHAR(30), Body VARCHAR(100));
GO
INSERT INTO Data.Messages(Subject, Body)
SELECT 'Next release delayed',
'Still fixing bugs' ...
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If you do not qualify columns in your query, which means that you do not specify from which tables your columns come, you may have problems if the database schema changes. For example, consider the following sample tables and a select query: CREATE TABLE Data.Shipments(Barcode VARCHAR(30), SomeOtherData VARCHAR(100))GOINSERT INTO ...
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