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	After the ChangeSet 1.1892.20.1 2005/08/24 (Bug #12562) SYSDATE() is not an alias of NOW() and is unsafe for replication. `SYSDATE()' backward compatible aliasing clashes with the idea #12562 fix. To make it safe-replicatable we have to either use RBR or to restore the pre-5.0 style. --sysdate-is-now command line flag was introduced to provide backward compatibility. sql/mysqld.cc: New option to force SYSDATE's backward compatible with 4.1 aliasing to NOW (not default) sql/sql_class.h: new slot to fill at init time and check at parse sql/sql_yacc.yy: calling NOW's branches when --sysdate-is-now mysql-test/r/sysdate_is_now.result: New BitKeeper file ``mysql-test/r/sysdate_is_now.result'' mysql-test/t/sysdate_is_now-master.opt: New BitKeeper file ``mysql-test/t/sysdate_is_now-master.opt'' mysql-test/t/sysdate_is_now.test: New BitKeeper file ``mysql-test/t/sysdate_is_now.test''
		
			
				
	
	
		
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			12 lines
		
	
	
		
			297 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| #
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| # BUG#15101 restore aliasing of SYSDATE to NOW in 5.0
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| # this feature is activated via --sysdate-is-now mysqld init opt
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| #
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| # To test here
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| # 1. SYSDATE() does not distiguish from NOW()
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| # 2. SYSDATE() obeys set timestamp
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| 
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| set timestamp=1;
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| SELECT sleep(1),NOW()-SYSDATE() as zero;
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| # End of 5.0 tests
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