options works as explained above, accepting the values ignorecase, case and extended, with ignorecase being the default. The queries are matched as they arrive to the filter on their way to a routing module. If
jdbcCompliantTruncation Truncation error ("Data truncated for column '%' at row %", "Out of range value for column '%' at row %") will be thrown as an error, and not as a warning.Default: true. Since 1.4.0 keyPassword Password for the private key in client certificate keyStore. (...
如果想对match_digest取反,即不被正则匹配的SQL语句才命中规则,则设置mysql_query_rules表中的字段negate_match_pattern=1。同样适用于下面的match_pattern匹配方式。 6.5 基于SQL语句路由:match_pattern 和match_digest的匹配方式类似,但match_pattern是基于原始SQL语句进行匹配的,包括参数值。有两种情况必须使用match_p...
SELECT id, SUM(amount) FROM test.donation AS d GROUP BY by bundler_id; Thedonationtable uses theidcolumn as the distribution key. However, this query containsGROUPBYbundler_id, so the results are being aggregated on a value that isnotpart of the distribution key. This means that multiple s...
CASE and NULL functions: Sybase ASE MariaDB 1 COALESCE(exp, exp2, …) Get first non-NULL expression COALESCE(exp, exp2, …) 2 ISNULL(exp, exp2) Return exp2 if exp is NULL IFNULL(exp, exp2) 3 NULLIF(exp, exp2) Return NULL if exp=exp2, otherwise return exp NULLIF(exp,...
The pattern compared can be a literal string or something else such as a table column. In strings, it uses C escape syntax, so double any \ characters. REGEXP is also case-insensitive, with the exception of binary strings.A table of possible patterns, which can be used are given below ...
However, the most puzzling issue with the EAV model is that the transformation into a one-column-per-attribute notation is almost always done using joins—quite often one outer join per attribute. This is not only cumbersome, it also results in very poor performance—a true anti-pattern. ...
negate_match_pattern: 0 re_modifiers: CASELESS flagOUT: NULL replace_pattern: NULL destination_hostgroup: 2 cache_ttl: NULL reconnect: NULL timeout: NULL retries: NULL delay: NULL next_query_flagIN: NULL mirror_flagOUT: NULL mirror_hostgroup: NULL ...
[CONJ-921] DatabaseMetadata#getTables with null value for tableNamePattern throws Syntax error [CONJ-922] DECIMAL overflow for long/int/short not throwing exception [CONJ-924] NULL column type might result in java.lang.IllegalArgumentException: Unexpected datatype NULL [CONJ-926]...
A character expression such as a column or field. pattern The regular expression matching information. It can be a combination of the following: ValueDescription ^ Matches the beginning of a string. If used with a match_parameter of 'm', it matches the start of a line anywhere within expres...