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feat: add regexp_match_substring, regexp_strpos, and regexp_count_sub…
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@richtia
richtia committed Aug 17, 2022
1 parent dc677c2 commit d1598bd
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194 changes: 194 additions & 0 deletions extensions/functions_string.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,67 @@ scalar_functions:
- value: i32
- value: i32
return: "string"
-
name: regexp_match_substring
description: >-
Extract a substring that matches the given regular expression pattern. The regular expression
pattern should follow the International Components for Unicode implementation
(https://unicode-org.github.io/icu/userguide/strings/regexp.html). The occurrence of the
pattern to be extracted is specified using the `occurrence` argument. Specifying `1` means
the first occurrence will be extracted, `2` means the second occurrence, and so on.
The `occurrence` argument should be a positive non-zero integer. The number of characters
from the beginning of the string to begin starting to search for pattern matches can be
specified using the `position` argument. Specifying `1` means to search for matches
starting at the first character of the input string, `2` means the second character, and so
on. The `position` argument should be a positive non-zero integer.
The `case_sensitivity` option specifies case-sensitive or case-insensitive matching.
Enabling the `multiline` option will treat the input string as multiple lines. This makes
the `^` and `$` characters match at the beginning and end of any line, instead of just the
beginning and end of the input string. Enabling the `dotall` option makes the `.` character
match line terminator characters in a string.
Behavior is undefined if the regex fails to compile, the occurrence value is out of range, or
the position value is out of range.
impls:
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "varchar<L1>"
name: "input"
- value: "varchar<L2>"
name: "pattern"
- value: i64
name: "position"
- value: i64
name: "occurrence"
return: "varchar<L1>"
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "string"
name: "input"
- value: "string"
name: "pattern"
- value: i64
name: "position"
- value: i64
name: "occurrence"
return: "string"
-
name: starts_with
description: Whether this string starts with another string.
Expand Down Expand Up @@ -196,6 +257,69 @@ scalar_functions:
name: "substring"
description: The substring to search for.
return: i64
-
name: regexp_strpos
description: >-
Return the position of an occurrence of the given regular expression pattern in a
string. The first character of the string is at position 1. The regular expression pattern
should follow the International Components for Unicode implementation
(https://unicode-org.github.io/icu/userguide/strings/regexp.html). The number of characters
from the beginning of the string to begin starting to search for pattern matches can be
specified using the `position` argument. Specifying `1` means to search for matches
starting at the first character of the input string, `2` means the second character, and so
on. The `position` argument should be a positive non-zero integer. Which occurrence to
return the position of is specified using the `occurrence` argument. Specifying `1` means
the position first occurrence will be returned, `2` means the position of the second
occurrence, and so on. The `occurrence` argument should be a positive non-zero integer. If
no occurrence is found, 0 is returned.
The `case_sensitivity` option specifies case-sensitive or case-insensitive matching.
Enabling the `multiline` option will treat the input string as multiple lines. This makes
the `^` and `$` characters match at the beginning and end of any line, instead of just the
beginning and end of the input string. Enabling the `dotall` option makes the `.` character
match line terminator characters in a string.
Behavior is undefined if the regex fails to compile, the occurrence value is out of range, or
the position value is out of range.
impls:
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "varchar<L1>"
name: "input"
- value: "varchar<L2>"
name: "pattern"
- value: i64
name: "position"
- value: i64
name: "occurrence"
return: i64
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "string"
name: "input"
- value: "string"
name: "pattern"
- value: i64
name: "position"
- value: i64
name: "occurrence"
return: i64
-
name: count_substring
description: Return the number of non-overlapping occurrences of a substring in an input string.
Expand Down Expand Up @@ -224,6 +348,76 @@ scalar_functions:
name: "substring"
description: The substring to count.
return: i64
-
name: regexp_count_substring
description: >-
Return the number of non-overlapping occurrences of a regular expression pattern in an input
string. The regular expression pattern should follow the International Components for
Unicode implementation (https://unicode-org.github.io/icu/userguide/strings/regexp.html).
The number of characters from the beginning of the string to begin starting to search for
pattern matches can be specified using the `position` argument. Specifying `1` means to
search for matches starting at the first character of the input string, `2` means the
second character, and so on. The `position` argument should be a positive non-zero integer.
The `case_sensitivity` option specifies case-sensitive or case-insensitive matching.
Enabling the `multiline` option will treat the input string as multiple lines. This makes
the `^` and `$` characters match at the beginning and end of any line, instead of just the
beginning and end of the input string. Enabling the `dotall` option makes the `.` character
match line terminator characters in a string.
Behavior is undefined if the regex fails to compile or the position value is out of range.
impls:
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "string"
name: "input"
- value: "string"
name: "pattern"
- value: i64
name: "position"
return: i64
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "varchar<L1>"
name: "input"
- value: "varchar<L2>"
name: "pattern"
- value: i64
name: "position"
return: i64
- args:
- name: case_sensitivity
options: [ CASE_SENSITIVE, CASE_INSENSITIVE]
required: false
- name: multiline
options: [ MULTILINE_DISABLED, MULTILINE_ENABLED]
required: false
- name: dotall
options: [ DOTALL_DISABLED, DOTALL_ENABLED]
required: false
- value: "fixedchar<L1>"
name: "input"
- value: "fixedchar<L2>"
name: "pattern"
- value: i64
name: "position"
return: i64
-
name: replace
description: >-
Expand Down

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