Thank you Alexey.
This is nice tool, however it does not show how much space is taken by given
table and its indices... I am sure this can be deduced by reading gstat output
file but I don't know how...
Hi Josef,
Such error is the consequence of the corruption - in the original
database there was a NULL in the field (most likely, all fields in that
record are NULL).
gbak does not check constraints when reading.
The best way to fix it is to find record with NULLs in the original
database
Hi!
What would be a proper way of dealing with GBAK restore error
'validation error for column X, value *** null ***'? This error
appears in one table, where X is the primary key. The database is
Firebird 2.5.4 in the superserver mode.
1) How do I properly restore this backup? Neither
Hi!
Thanks for the answer. Luckily, I still have the FDB file, so I can get
rid of the bad records easily. What has me concerned is, what if I only
had the backup? Your trick with pumping seems plausible, I will have to
give it a try. IBBackupSurgeon looks promising, too.
Josef
On 15.5.2015
Hello,
here is full example:
CREATE TABLE TABLE_1
(
ID INTEGER NOT NULL,
NAME VARCHAR(32),
CONSTRAINT PK_TABLE_1 PRIMARY KEY (ID)
);
GRANT DELETE, INSERT, REFERENCES, SELECT, UPDATE
ON TABLE_1 TO SYSDBA WITH GRANT OPTION;
CREATE TABLE TABLE_2
(
ID INTEGER NOT NULL,
How about something along the lines of:
A table that small is going to fit into a single disk page. So a table
scan involves reading one disk page.
Using the index would involve reading the index as well, which is a
second disk page, so twice as slow.
?
(Other RDBMS which have a covering
On May 15, 2015, at 9:02 AM, brucedickin...@wp.pl [firebird-support]
firebird-support@yahoogroups.com wrote:
SELECT * FROM
TABLE_2 T2
INNER JOIN
TABLE_1 T1
ON
T2.TABLE_1_ID = T1.ID
After executing this query I am getting such plan:
PLAN JOIN (T1 NATURAL, T2 INDEX
On May 15, 2015, at 2:14 AM, brucedickin...@wp.pl [firebird-support]
firebird-support@yahoogroups.com wrote:
This is nice tool, however it does not show how much space is taken by given
table and its indices... I am sure this can be deduced by reading gstat
output file but I don't
Hi Bruce,
To view size of tables and indices you need to use our IBAnalyst tool
(http://ib-aid.com/en/ibanalyst/).
Regards,
Alexey Kovyazin
IBSurgeon
Thank you Alexey.
This is nice tool, however it does not show how much space is taken by
given table and its indices... I am sure this
Bruce,
SELECT * FROM
TABLE_2 T2
INNER JOIN TABLE_1 T1 ON T2.TABLE_1_ID = T1.ID
After executing this query I am getting such plan:
PLAN JOIN (T1 NATURAL, T2 INDEX (FK_TABLE_2))
Why in case of TABLE_1 optimizer did not chose index PK_TABLE_1?
Given that there is no ORDER BY clause
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