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MDEV-18918 SQL mode EMPTY_STRING_IS_NULL breaks RBR upon CREATE TABLE .. SELECT

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The 10.5 version of the patch.

Removing DEFAULT from INFORMATION_SCHEMA columns.
DEFAULT in read-only tables is rather meaningless.
Upgrade should go smoothly.

Also fixes:
 MDEV-20254 Problems with EMPTY_STRING_IS_NULL and I_S tables
This commit is contained in:
Alexander Barkov
2021-12-28 17:43:40 +04:00
parent e4b302e436
commit 62e320c86d
82 changed files with 2374 additions and 2319 deletions
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11
sql/sql_select.cc
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@ -19377,16 +19377,7 @@ bool Create_tmp_table::add_schema_fields(THD *thd, TABLE *table,
DBUG_RETURN(true); // EOM
}
field->init(table);
switch (def.def()) {
case DEFAULT_NONE:
field->flags|= NO_DEFAULT_VALUE_FLAG;
break;
case DEFAULT_TYPE_IMPLICIT:
break;
default:
DBUG_ASSERT(0);
break;
}
field->flags|= NO_DEFAULT_VALUE_FLAG;
add_field(table, field, fieldnr, param->force_not_null_cols);
}