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Push history-limiting code until after the code that adds new

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history entries.  Lazy deletion isn't smart or useful here.

Backport from 5.1 .
This commit is contained in:
cmiller@zippy.cornsilk.net
2007-11-14 15:11:58 -05:00
parent 1604cdb30d
commit ddb1443b07
10 changed files with 464 additions and 283 deletions
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21
sql/sql_show.cc
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@ -3622,6 +3622,14 @@ ST_SCHEMA_TABLE *get_schema_table(enum enum_schema_tables schema_table_idx)
/*
Create information_schema table using schema_table data
@note
For MYSQL_TYPE_DECIMAL fields only, the field_length member has encoded
into it two numbers, based on modulus of base-10 numbers. In the ones
position is the number of decimals. Tens position is unused. In the
hundreds and thousands position is a two-digit decimal number representing
length. Encode this value with (decimals*100)+length , where
0<decimals<10 and 0<=length<100 .
SYNOPSIS
create_schema_table()
thd thread handler
@ -3667,6 +3675,19 @@ TABLE *create_schema_table(THD *thd, TABLE_LIST *table_list)
DBUG_RETURN(NULL);
break;
case MYSQL_TYPE_DECIMAL:
if (!(item= new Item_decimal((longlong) fields_info->value, false)))
{
DBUG_RETURN(0);
}
item->decimals= fields_info->field_length%10;
item->max_length= (fields_info->field_length/100)%100;
if (item->unsigned_flag == 0)
item->max_length+= 1;
if (item->decimals > 0)
item->max_length+= 1;
item->set_name(fields_info->field_name,
strlen(fields_info->field_name), cs);
break;
case MYSQL_TYPE_STRING:
default:
/* Don't let unimplemented types pass through. Could be a grave error. */