Efficiently Fetching Column Names from an SQLite3 Table
Database migrations often require verifying the existence of specific columns. This article explores the most efficient method for retrieving a complete list of column names from an SQLite3 table.
While querying sqlite_master
is possible, extracting column names from the resulting sql
string requires additional processing, making it less efficient.
A superior approach leverages SQLite3's built-in PRAGMA table_info()
function:
<code class="language-sql">PRAGMA table_info(table_name);</code>
This directly returns a table with a name
column containing all column names for the specified table_name
. This method is significantly more streamlined and avoids the overhead of parsing SQL strings.
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