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MDEV-22218 InnoDB: Failing assertion: node->pcur->rel_pos == BTR_PCUR_ON upon LOAD DATA with NO_BACKSLASH_ESCAPES in SQL_MODE and unique blob in table

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`inited == NONE` at the initialization time does not always mean
that it'll be `NONE` later, at the execution time. Use a more complex
caller-specific logic to decide whether to create a cloned lookup handler.

Besides LOAD (as in the original bug report) make sure that all
prepare_for_insert() invocations are covered by tests. Add tests for
CREATE ... SELECT, multi-UPDATE, and multi-DELETE.

Don't enable write cache with long uniques.
This commit is contained in:
Sergei Golubchik
2020-04-12 18:09:09 +02:00
parent 8c0b988073
commit fcd84da5f1
11 changed files with 133 additions and 19 deletions
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sql/handler.h
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@ -4650,7 +4650,7 @@ protected:
public:
bool check_table_binlog_row_based();
bool prepare_for_row_logging();
int prepare_for_insert();
int prepare_for_insert(bool do_create);
int binlog_log_row(TABLE *table,
const uchar *before_record,
const uchar *after_record,