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<chapter id="libpq">

unsigned char *PQunescapeBytea(unsigned char *from, size_t *to_length);

</synopsis>

The <paramater>from</parameter> parameter points to an escaped string

The <parameter>from</parameter> parameter points to an escaped string

such as might be returned by <function>PQgetvalue</function> of a

<type>BYTEA</type> column. <function>PQunescapeBytea</function> converts

this NUL terminated string representation into binary, filling a buffer.

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PostgreSQL documentation

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<varlistentry>

<term><literal>\timing</literal>

<term><literal>\timing</literal></term>

<listitem>

<para>

Toggles a display of how long each query takes in seconds.

Toggles a display of how long each query takes in seconds.

</para>

</listitem>

</listitem>

</varlistentry>

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<Chapter Id="runtime">

Each SQL transaction has an isolation level, which can be either

<quote>read committed</quote> or <quote>serializable</quote>.

This parameter controls the default isolation level of each new

transaction. The default is <quote>read committed/quote>.

transaction. The default is <quote>read committed</quote>.

</para>

<para>

You may also want to use the <application>sysctl</> setting to

lock shared memory into RAM and prevent it from being paged out

to swap.

</para>

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<chapter id="xfunc">

value be returned. These routines provide more efficient access to

parts of large values in the case where they have storage type

"external". (The storage type of a column can be specified using

<command>ALTER TABLE <repaceable>tablename</replaceable> ALTER

<literal>ALTER TABLE <replaceable>tablename</replaceable> ALTER

COLUMN <replaceable>colname</replaceable> SET STORAGE

<replaceable>storagetype</replaceable>. Storage type is one of

plain, external, extended or main.)

<replaceable>storagetype</replaceable></literal>. Storage type is one of

<literal>plain</>, <literal>external</>, <literal>extended</literal>,

or <literal>main</>.)

</para>

<para>