BUG#50479 DDL stmt on row-only/stmt-only tables generate spurious binlog_format
errors In the fix of BUG#39934 in 5.1-rep+3, errors are generated when binlog_format=row and a statement modifies a table restricted to statement-logging (ER_BINLOG_ROW_MODE_AND_STMT_ENGINE); or if binlog_format=statement and a statement modifies a table restricted to row-logging (ER_BINLOG_STMT_MODE_AND_ROW_ENGINE). However, some DDL statements that lock tables (e.g. ALTER TABLE, CREATE INDEX and CREATE TRIGGER) were causing spurious errors, although no row might be inserted into the binary log. To fix the problem, we tagged statements that may generate rows into the binary log and thence the warning messages are only printed out when the appropriate conditions hold and rows might be changed.
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