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- Regular Expressions – DuckDB 14828
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...returns the corresponding values of group . regexp_full_match(string, regex[, options]) Returns true if the entire string matches the regex . regexp_matches(string, pattern[, options]) Returns true if string contains the regexp pattern , false otherwis...+):\s*(\d+)', 2) Result [33, 14] regexp_full_match(string, regex[, options]) Description Returns true if the entire string matches the regex . A set of optional options can be set. Example regexp_full_match('anabanana', '(an)*') Result false regexp_matc...Returns true if string contains the regexp pattern , false otherwise. A set of optional options can be set. Example regexp_matches('anabanana', '(an)*') Result true regexp_replace(string, pattern, replacement[, options]) Description If string contains t... - https://man.mtool.work/duckdb/1.3/sql/functions/regular_expressions.html
- Text Functions – DuckDB 10293
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...the beginning or end of the list respectively. Negative values are accepted. string LIKE target Returns true if the string matches the like specifier (see Pattern Matching ). string SIMILAR TO regex Returns true if the string matches the regex (see Patt...he string to hexadecimal representation. ilike_escape(string, like_specifier, escape_character) Returns true if the string matches the like_specifier (see Pattern Matching ) using case-insensitive matching. escape_character is used to search for wildcar...) Number of grapheme clusters in string . like_escape(string, like_specifier, escape_character) Returns true if the string matches the like_specifier (see Pattern Matching ) using case-sensitive matching. escape_character is used to search for wildcard... - https://man.mtool.work/duckdb/1.3/sql/functions/text.html
- Pattern Matching – DuckDB 9569
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...in SQL:1999), a GLOB operator , and POSIX-style regular expressions . LIKE The LIKE expression returns true if the string matches the supplied pattern. (As expected, the NOT LIKE expression returns false if LIKE returns true , and vice versa. An equiva...represents the string itself; in that case LIKE acts like the equals operator. An underscore ( _ ) in pattern stands for (matches) any single character; a percent sign ( % ) matches any sequence of zero or more characters. LIKE pattern matching always...OT LIKE ~~* ILIKE !~~* NOT ILIKE SIMILAR TO The SIMILAR TO operator returns true or false depending on whether its pattern matches the given string. It is similar to LIKE , except that it interprets the pattern using a regular expression . Like LIKE , t... - https://man.mtool.work/duckdb/1.3/sql/functions/pattern_matching.html
- Reading Multiple Files – DuckDB 9466
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...can either be an exact filename, or use a glob syntax to read multiple files that match a pattern. Wildcard Description * Matches any number of any characters (including none) ** Matches any number of subdirectories (including none) ? Matches any singl...e character [abc] Matches one character given in the bracket [a-z] Matches one character from the range given in the bracket Note that the ? wildcar...json Pages in This Section 関連キーワード files parquet read flights glob Read Parquet folder filename syntax pattern list Matches multiple using match single table parameter DuckDB schemas ending treat them input 関連するページ Data Ingestion Parquet I... - https://man.mtool.work/duckdb/1.3/data/multiple_files/overview.html
- FROM and JOIN Clauses – DuckDB 8242
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...Often this is a predicate, but there are other implied rules that may be specified. Outer Joins Rows that do not have any matches can still be returned if an OUTER join is specified. Outer joins can be one of: LEFT (All rows from the left relation appe...om the left table that have at least one match in the right table. Anti joins return rows from the left table that have no matches in the right table. When using a semi or anti join the result will never have more rows than the left hand side table. Sem...s.when): If you combine USING with a SELECT * like this, the query will return the left side (probe) column values for the matches, not the right side (build) column values. To get the prices times in the example, you will need to list the columns expli... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/from.html
- Enum Data Type – DuckDB 8138
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...ition, it also allows for comparisons between different enum columns, or an enum and a VARCHAR column. For example: Regexp_matches is a function that takes a VARCHAR, hence current_mood is cast to VARCHAR: SELECT regexp_matches ( current_mood , '.*a.*'... - https://man.mtool.work/duckdb/1.3/sql/data_types/enum.html
- Vector Similarity Search Extension – DuckDB 8017
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...──────┴─────────────────────────────────────┘ Alternatively, we can use the vss_match macro as a “lateral join” to get the matches already grouped by the left table. Note that this requires us to specify the left table first, and then the vss_match macr...──────────────────────────────────────────────────────────────────────────────────────────────────────────┐ │ search_vec │ matches │ │ float[3] │ struct(score float, "row" struct(id integer, vec float[3]))[] │ ├─────────────────┼────────────────────────... - https://man.mtool.work/duckdb/1.3/core_extensions/vss.html
- Prepared Statements – DuckDB 7862
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...ails, the error can be obtained through duckdb_prepare_error . It is not required that the duckdb_bind family of functions matches the prepared statement parameter type exactly. The values will be auto-cast to the required value as required. For example... - https://man.mtool.work/duckdb/1.3/clients/c/prepared.html
- Result Verification – DuckDB 7862
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...ontains a snippet of text. In that case, we can use the <REGEX>: modifier followed by a certain regex. If the result value matches the regex the test is passed. This is primarily used for query plan analysis. query II EXPLAIN SELECT tbl.a FROM 'data/par... - https://man.mtool.work/duckdb/1.3/dev/sqllogictest/result_verification.html
- Star Expression – DuckDB 7862
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...mbers?)' ) FROM numbers ; id number 1 10 2 20 3 NULL Renaming Columns with Regular Expressions in a COLUMNS Expression The matches of capture groups in regular expressions can be used to rename matching columns. The capture groups are one-indexed; \0 is... - https://man.mtool.work/duckdb/1.3/sql/expressions/star.html
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