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Merge work:/home/bk/mysql-4.0 into hundin.mysql.fi:/my/bk/mysql-4.0
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@ -3384,6 +3384,7 @@ around some differences.
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@node Extensions to ANSI, Differences from ANSI, Compatibility, Compatibility
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@subsection MySQL Extensions to ANSI SQL92
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@cindex hints
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MySQL includes some extensions that you probably will not find in
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other SQL databases. Be warned that if you use them, your code will not be
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portable to other SQL servers. In some cases, you can write code that
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@ -32392,11 +32393,13 @@ read the @code{GROUP BY} description.
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@xref{Group by functions}.
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@item
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@cindex hints
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@code{SQL_BUFFER_RESULT} will force the result to be put into a temporary
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table. This will help MySQL free the table locks early and will help
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in cases where it takes a long time to send the result set to the client.
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@item
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@cindex hints
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@code{SQL_SMALL_RESULT}, a MySQL-specific option, can be used
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with @code{GROUP BY} or @code{DISTINCT} to tell the optimizer that the
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result set will be small. In this case, MySQL will use fast
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@ -32404,6 +32407,7 @@ temporary tables to store the resulting table instead of using sorting. In
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MySQL Version 3.23 this shouldn't normally be needed.
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@item
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@cindex hints
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@code{STRAIGHT_JOIN} forces the optimizer to join the tables in the order in
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which they are listed in the @code{FROM} clause. You can use this to speed up
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a query if the optimizer joins the tables in non-optimal order.
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@ -32621,11 +32625,13 @@ portable across databases, it's recommended to use @code{LEFT JOIN}
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instead of @code{RIGHT JOIN}.
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@item
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@cindex hints
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@code{STRAIGHT_JOIN} is identical to @code{JOIN}, except that the left table
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is always read before the right table. This can be used for those (few)
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cases where the join optimizer puts the tables in the wrong order.
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@item
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@cindex hints
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As of MySQL Version 3.23.12, you can give hints about which
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index MySQL should use when retrieving information from a
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table. This is useful if @code{EXPLAIN} shows that MySQL is
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@ -34129,7 +34135,7 @@ The options work for all table types, if not otherwise indicated:
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@item @code{PACK_KEYS} @tab Set this to 1 if you want to have a smaller index. This usually makes updates slower and reads faster (MyISAM, ISAM).
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@item @code{PASSWORD} @tab Encrypt the @code{.frm} file with a password. This option doesn't do anything in the standard MySQL version.
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@item @code{DELAY_KEY_WRITE} @tab Set this to 1 if want to delay key table updates until the table is closed (MyISAM).
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@item @code{ROW_FORMAT} @tab Defines how the rows should be stored. Currently you can only use the DYNAMIC and STATIC options for MyISAM tables.
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@item @code{ROW_FORMAT} @tab Defines how the rows should be stored. Currently this option only works with MyISAM tables, which supports the @code{DYNAMIC} and @code{FIXED} row formats. @xref{MyISAM table formats}.
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@end multitable
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When you use a @code{MyISAM} table, MySQL uses the product of
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@ -35649,6 +35655,13 @@ high-byte first.
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automatically depending on the type of columns you are using. The third,
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compressed tables, can only be created with the @code{myisampack} tool.
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When you @code{CREATE} or @code{ALTER} a table you can for tables that
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doesn't have @code{BLOB}'s force the table format to @code{DYNAMIC} or
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@code{FIXED} with the @code{ROW_FORMAT=#} table option. In the future
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you will be able to compress/decompress tables by specifying
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@code{ROW_FORMAT=compressed | default} to @code{ALTER TABLE}.
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@xref{CREATE TABLE}.
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@menu
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* Static format:: Static (Fixed-length) table characteristics
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* Dynamic format:: Dynamic table characteristics
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