Assuming you're on 9.5 (highest version tag you used), you can swap those out for a \w, downgrading your regex a bit (it now allows identifiers to start with a digit, which is not allowed). You're currently catching only the schema in qualified names. You can expand the...
Postgres regexp_matches in WHERE Clause When a Regex is run against a string, the REGEXP_MATCHES() function compares the two and returns the string that matches the pattern as a set. We’ll look at REGEXP_MATCHES() function example for a better understanding. SELECT REGEXP_MATCHES(Email,...
Use less than or greater than in where clause with a regex in rails I need to write a query that finds a number that can be less than, less than or equal, greater than, greater than or equal clause combined with a regex. Is there a way to include the less than or grea... ...
Consider the case where the Regex is an empty string. The query is as follows: SELECT regexp_split_to_table('bats Eaten gate Atone', ''); The output of this query will separate all the characters of the string in the columns of a table like this: ...
In asking a recent question, some mysterious startup time components came up in my EXPLAIN ANALYZE output. I was playing further, and discovered that the startup time drops to near 0 if I remove the regex WHERE clause. I ran the following bash script as a test: for i in $(...
like_regex: Tests whether the first operand matches the regular expression given by the second operand. starts with: Tests whether the second operand is an initial substring of the first operand. To provide a natural way of working with JSON data, thejsonpathsyntax relies on some JavaScript conv...
Regular expressions in MySQL are invoked with theREGEXPkeyword, aliased to RLIKE. The most basic usage is a hardcoded regular expression in the right hand side of a conditional clause, e.g.: SELECT * FROM users WHERE email RLIKE '^[a-c].*[0-9]@'; ...
), then run a regex search and replace like this: ^[^|]*\|\s+([^|]*?)\s+\| table \|.*$ to: select '\1', count(*) from \1 union/g which will yield you something very similar to this: select 'auth_group', count(*) from auth_group union select 'auth_group_permission...
Figure 1 – A simple RegEx expression in PostgreSQL As you can see in the figure above, the filter clause is extended using the “~” tilde operator and then a sequence of characters followed by it. Let us now learn in more detail how to write this expression. ...
kevin_test=# SELECT name, source, setting FROM pg_settings WHERE source != 'default' AND source != 'override' ORDER BY 2, 1; name | source | setting ---+---+--- log_timezone | command line | PRC TimeZone | command line | PRC timezone_abbreviations | command line | Default ...