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dae5a99c73
Parser changes made by Alexander Barkov <bar@mariadb.com>. Part of the tests made by Iqbal Hassan <iqbal@hasprime.com>. Initially marking with ORA_JOIN flag made also by Iqbal Hassan <iqbal@hasprime.com>. Main idea is that parser mark fields with (+) with a flag (ORA_JOIN). During Prepare the flag bring to the new created items if needed. Later after preparing (fix_firlds()) WHERE confition the relations betweel the tables analyzed and tables reordered so to make JOIN/LEFT JOIN operators in chain equivalent to the query with oracle outer join operator (+). Then the flags of (+) removed. |
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