Question

I’m having trouble with a stubborn MySQL query. It’s a quite long and complex query, sorry about that. I really did my best to find it myself but I could use a hand here.

The following query is used to emulate a full outer join of column information in the information_schema, and column information in a table called nexedit_schema. The PHP variable $db contains the target database that contains the latter table.

The query actually successfully runs on my own server (MySQL version 5.1), but fails to run on a friend’s server (MySQL version 5.5). It claims that I have a syntax error near “ON (schema_tables.db_table…”

I’m probably overlooking something really stupid. Anyone kind enough to help me out?

SELECT information_schema.tables.table_name, schema_tables.db_table, schema_tables.ne_page
  FROM information_schema.tables
  LEFT JOIN (
    (SELECT DISTINCT db_table, ne_page FROM {$db}.nexedit_schema)
    AS schema_tables)
  ON (schema_tables.db_table = information_schema.tables.table_name
    COLLATE utf8_unicode_ci)
  WHERE information_schema.tables.table_schema = '{$db}'
    AND information_schema.tables.table_name NOT LIKE 'nexedit_%'

UNION

SELECT information_schema.tables.table_name, schema_tables.db_table, schema_tables.ne_page
  FROM information_schema.tables
  RIGHT JOIN (
    (SELECT DISTINCT db_table, ne_page FROM {$db}.nexedit_schema)
    AS schema_tables)
  ON (schema_tables.db_table = information_schema.tables.table_name
    COLLATE utf8_unicode_ci)
  WHERE information_schema.tables.table_schema IS NULL
    AND schema_tables.db_table NOT LIKE 'nexedit_%'

GROUP BY information_schema.tables.table_name,schema_tables.db_table;

Answer 1

There’s unnecessary ) here: AS schema_tables) Should be before AS