The ICU locale. See Supported Languages and Locales for a list of supported locales.
The default value is simple which specifies simple binary comparison.
Optional. The level of comparison to perform. Corresponds to ICU Comparison Levels. Possible values are:
Value Description 1 Primary level of comparison. Collation performs comparisons of the base characters only, ignoring other differences such as diacritics and case. 2 Secondary level of comparison. Collation performs comparisons up to secondary differences, such as diacritics. That is, collation performs comparisons of base characters (primary differences) and diacritics (secondary differences). Differences between base characters takes precedence over secondary differences. 3 Tertiary level of comparison. Collation performs comparisons up to tertiary differences, such as case and letter variants. That is, collation performs comparisons of base characters (primary differences), diacritics (secondary differences), and case and variants (tertiary differences). Differences between base characters takes precedence over secondary differences, which takes precedence over tertiary differences. This is the default level.
4 Quaternary Level. Limited for specific use case to consider punctuation when levels 1-3 ignore punctuation or for processing Japanese text. 5 Identical Level. Limited for specific use case of tie breaker.
Optional. Flag that determines whether strings with diacritics sort from back of the string, such as with some French dictionary ordering.
If true, compare from back to front. If false, compare from front to back.
The default value is false.
Optional. Flag that determines whether to include case comparison at strength level 1 or 2.
If true, include case comparison; i.e.
When used with strength:1, collation compares base characters and case. When used with strength:2, collation compares base characters, diacritics (and possible other secondary differences) and case. If false, do not include case comparison at level 1 or 2. The default is false.
Optional. Flag that determines whether to check if text require normalization and to perform normalization. Generally, majority of text does not require this normalization processing.
If true, check if fully normalized and perform normalization to compare text. If false, does not check.
The default value is false.
Optional. Flag that determines whether to compare numeric strings as numbers or as strings.
If true, compare as numbers; i.e. "10" is greater than "2". If false, compare as strings; i.e. "10" is less than "2".
Default is false.
Optional. Flag that determines whether strings with diacritics sort from back of the string, such as with some French dictionary ordering.
If true, compare from back to front. If false, compare from front to back.
The default value is false.
Optional. Flag that determines whether to include case comparison at strength level 1 or 2.
If true, include case comparison; i.e.
When used with strength:1, collation compares base characters and case. When used with strength:2, collation compares base characters, diacritics (and possible other secondary differences) and case. If false, do not include case comparison at level 1 or 2. The default is false.
The ICU locale. See Supported Languages and Locales for a list of supported locales.
The default value is simple which specifies simple binary comparison.
Optional. Flag that determines whether to check if text require normalization and to perform normalization. Generally, majority of text does not require this normalization processing.
If true, check if fully normalized and perform normalization to compare text. If false, does not check.
The default value is false.
Optional. Flag that determines whether to compare numeric strings as numbers or as strings.
If true, compare as numbers; i.e. "10" is greater than "2". If false, compare as strings; i.e. "10" is less than "2".
Default is false.
Optional. The level of comparison to perform. Corresponds to ICU Comparison Levels. Possible values are:
Value Description 1 Primary level of comparison. Collation performs comparisons of the base characters only, ignoring other differences such as diacritics and case. 2 Secondary level of comparison. Collation performs comparisons up to secondary differences, such as diacritics. That is, collation performs comparisons of base characters (primary differences) and diacritics (secondary differences). Differences between base characters takes precedence over secondary differences. 3 Tertiary level of comparison. Collation performs comparisons up to tertiary differences, such as case and letter variants. That is, collation performs comparisons of base characters (primary differences), diacritics (secondary differences), and case and variants (tertiary differences). Differences between base characters takes precedence over secondary differences, which takes precedence over tertiary differences. This is the default level.
4 Quaternary Level. Limited for specific use case to consider punctuation when levels 1-3 ignore punctuation or for processing Japanese text. 5 Identical Level. Limited for specific use case of tie breaker.
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Options used to configure collation options.