Kevin Locke 6aea521bf2 Rework SHOW COLUMNS/INDEX/TABLE support ...

Wordpress 4 makes use of SHOW COLUMNS and SHOW TABLES in addition to
SHOW INDEX, both with and without the FULL modifier.  Implement support
for these statements using queries against INFORMATION_SCHEMA.

Some of these queries use lower-case versions of these statements,
such as "show tables like 'wp_flag_pictures'", so we make sure to
recognize both the upper- and lower-case versions.

This is based, in part, on the work of raptorz in the support forum at
https://wordpress.org/support/topic/upgrade-to-wp421-fail?replies=3#post-6886123

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

2015-06-06 21:47:30 -06:00

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