user_guide_src/source/database/table_data.rst

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Table Data
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These functions let you fetch table information.

$this->db->list_tables();
==========================

Returns an array containing the names of all the tables in the database
you are currently connected to. Example::

	$tables = $this->db->list_tables();  foreach ($tables as $table) {    echo $table; }

$this->db->table_exists();
===========================

Sometimes it's helpful to know whether a particular table exists before
running an operation on it. Returns a boolean TRUE/FALSE. Usage example::

	 if ($this->db->table_exists('table_name')) {    // some code... }

Note: Replace *table_name* with the name of the table you are looking
for.