Details
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Task
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Status: Open (View Workflow)
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Minor
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Resolution: Unresolved
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None
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None
Description
myqldump should support dump-history in --xml mode. This imposes following requirements:
1. --xml option produces history. System fields contain Extra="ROW START/END GENERATED" option. If system fields are system-hidden they are included in <table_structure> anyway with Extra="SYSTEM INVISIBLE ROW START/END GENERATED" option. <table_structure> includes System_versioning="Y" option.
Example:
<?xml version="1.0"?> |
<mysqldump xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> |
<database name="test"> |
<table_structure name="t1" System_versioning="Y"> |
<field Field="x" Type="int(11)" Null="YES" Key="" Default="NULL" Extra="" Comment="" /> |
<field Field="row_start" Type="timestamp(6)" Null="NO" Key="" Extra="SYSTEM INVISIBLE ROW START GENERATED" Comment="" /> |
<field Field="row_end" Type="timestamp(6)" Null="NO" Key="" Extra="SYSTEM INVISIBLE ROW END GENERATED" Comment="" /> |
<options Name="t1" Engine="MyISAM" Version="10" Row_format="Fixed" Rows="2" Avg_row_length="19" Data_length="38" Max_data_length="5348024557502463" Index_length="1024" Data_free="0" Create_time="2018-07-03 09:30:09" Update_time="2018-07-03 09:30:09" Collation="latin1_swedish_ci" Create_options="" Comment="" Max_index_length="17179868160" Temporary="N" /> |
</table_structure> |
<table_data name="t1"> |
<row> |
<field name="x">1</field> |
<field name="row_start">2018-07-03 09:30:09.491532</field> |
<field name="row_end">2018-07-03 09:30:09.491928</field> |
</row> |
<row> |
<field name="x">2</field> |
<field name="row_start">2018-07-03 09:30:09.491532</field> |
<field name="row_end">2038-01-19 03:14:07.999999</field> |
</row> |
</table_data> |
</database> |
</mysqldump> |
2. LOAD XML loads such data in case system_versioning_modify_history is ON. When system_versioning_modify_history is OFF LOAD XML fails to set row_start, row_end fields.
3. mysqlimport imports such tables with history.
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