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work in 5.1.40) MERGE engine fails to open child table from a different database if child table/database name contains characters that are subject for table name to filename encoding (WL1324). Another problem is that MERGE engine didn't properly open child table from the same database if child table name contains characters like '/', '#'. The problem was that table name to file name encoding was applied inconsistently: * On CREATE: encode table name + database name if child table is in different database; do not encode table name if child table is in the same database; * No decoding on open. With this fix child table/database names are always encoded on CREATE and decoded on open. Compatibility with older tables preserved. Along with this patch comes fix for SHOW CREATE TABLE, which used to show child table/database path instead of child table/database names. mysql-test/r/merge.result: A test case for BUG#48265. mysql-test/std_data/bug48265.frm: MERGE table from 5.0 to test fix for BUG#48265 compatibility. mysql-test/t/merge.test: A test case for BUG#48265. storage/myisammrg/ha_myisammrg.cc: On CREATE always write child table/database name encoded by table name to filename encoding to dot-MRG file. On open decode child table/database name. Compatibilty with previous versions preserved. Fixed ::append_create_info() to return child table/database name instead of path. storage/myisammrg/myrg_open.c: Move if (has_path) branch from myrg_parent_open() to myisammrg_parent_open_callback. The callback function needs to know if child table was written along with database name to dot-MRG file. Needed for compatibility reasons. |
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