134 lines
4.4 KiB
HTML
134 lines
4.4 KiB
HTML
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<div class="fancy_title">
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REINDEX
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</div>
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</div>
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<p><b><a href="syntax/reindex-stmt.html">reindex-stmt:</a></b>
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<button id='x1741' onclick='hideorshow("x1741","x1742")'>hide</button></p>
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<img alt="syntax diagram reindex-stmt" src="images/syntax/reindex-stmt.gif" />
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</div>
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<p>The REINDEX command is used to delete and recreate indices from scratch.
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This is useful when the definition of a collation sequence has changed, or
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when there are <a href="expridx.html">indexes on expressions</a> involving a function whose definition
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has changed.
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</p>
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<p>If the REINDEX keyword is not followed by a collation-sequence or database
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object identifier, then all indices in all attached databases are rebuilt.
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</p><p>If the REINDEX keyword is followed by a collation-sequence name, then
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all indices in all attached databases that use the named collation sequences
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are recreated.
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</p><p>Or, if the argument attached to the REINDEX identifies a specific
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database table, then all indices attached to the database table are rebuilt.
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If it identifies a specific database index, then just that index is recreated.
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</p><p>For a command of the form "REINDEX <i>name</i>", a match
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against <span class='yyterm'>collation-name</span> takes precedence over a match
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against <span class='yyterm'>index-name</span> or <span class='yyterm'>table-name</span>.
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This ambiguity in the syntax may be avoided by always specifying a
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<span class='yyterm'>schema-name</span> when reindexing a specific table or index.
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</p>
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