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dimitr 2005-12-27 10:57:39 +00:00
parent 740903f3f3
commit be3e978340
1 changed files with 24 additions and 11 deletions
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35
doc/README.incompatibilities.txt
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@ -33,6 +33,10 @@ INSTALLATION/CONFIGURATION
protocol, please ensure your server and client binaries are of the same
version.
* Parameter DeadThreadsCollection of firebird.conf is deprecated and will be
ignored if set. Current Firebird version efficiently performs it without
delay.
SECURITY
--------------------------
@ -67,6 +71,15 @@ UTILITIES
Those using the full syntax are expected to know what this restore mode
actually means.
SQL SYNTAX
--------------------------
* A number of new reserved keywords are introduced. The full list is available
here: /doc/sql.extentions/README.keywords. Please ensure your DSQL
statements and procedure/trigger sources don't contain those keywords as
identifiers. Otherwise, you'll need to either use them quoted (in Dialect 3
only) or rename them.
SQL CHECKING
--------------------------
@ -75,12 +88,18 @@ SQL CHECKING
instead: "SELECT T.A FROM TAB T". Such behaviour is declared by the SQL
specification.
SQL SYNTAX
--------------------------
* User-specified plans are validated more strictly than previously. So, if you
get an error related to plans (e.g. "table T is not referenced in plan"),
please look through your procedures and triggers and adjust the plans to be
semantically correct. Such errors could also appear during the restore
process (when you migrate databases to the new version) and you'll need to
change the original database before attempting to perform a backup/restore
cycle.
* CLOSE became reserved keyword according to SQL standard (CLOSE CURSOR).
It's now prohibited to use it as general purpose identifier without quotes.
For example, 'declare variable close smallint;' results in error.
* Assignments to OLD contexts are now prohibited for all kinds of triggers.
Also, assignments to NEW contexts in AFTER-triggers are prohibited as well.
So, if you get an unexpected error "cannot update a read-only column", this
is exactly the reason.
SQL EXECUTION RESULTS
--------------------------
@ -131,9 +150,3 @@ PERFORMANCE
performance degradation for some your queries. This is done to fix known
bugs causing wrong results returned by this predicate in cases when index
was involved.
FIREBIRD.CONF
--------------------------
* Parameter DeadThreadsCollection is deprecated and will be ignored if set.
Current firebird version efficiently performs it without delay.