SELECT ' OR PersonName like ''' '%'''ĮXECUTE sp_executesql can do this dynamically for a large number of elements, at the expense of performance, but it works. It's beyond me why SQL couldn't just gracefully fallback like this when you say collate from case sensitive to case insensitive, when you have two otherwise identical collations. it will actually generate where clause PersonName Like 'param1%' or PersonName Like 'param2%' or. prepare the where sub-clause to cover LIKE IN (.) You can do it as follows - is nchar(1), is nvarchar(MAX) You need to select all persons from a list of first names, stored in field NameToSelect in table NamesToSelect, plus some additional criteria (like filtered on gender, birth date, etc) Suppose you have table Persons where person names are stored in a single field PersonName as FirstName ' ' LastName. The example below is a little "forced", but this can match various real cases found in legacy databases. Most of the time in such situations you have the parameter of IN clause based on some data from database. WHERE subject LIKE ALL ('%Jo%oe%','J%e')įor Sql Server you can resort to Dynamic SQL. Snowflake also supports LIKE ANY/ LIKE ALL matching:Īllows case-sensitive matching of strings based on comparison with one or more patterns. PostgreSQL LIKE/ILIKE ANY (ARRAY): SELECT * There are also and operators that represent NOT LIKE and NOT ILIKE. JOOQ could support such a synthetic predicate out of the box. The operator is equivalent to LIKE, and corresponds to ILIKE. The workaround is to manually expand the predicate to the equivalent SELECT * JOOQ version 3.12.0 supports that syntax:Īdd synthetic LIKE ANY and LIKE ALL operatorsĪ lot of times, SQL users would like to be able to combine LIKE and IN predicates, as in: SELECT * For example, in order to match '\abc', the pattern should be '\\abc'. It is invalid to escape any other character. │ x LIKE ANY ('A%','%B','%C%') │ x LIKE 'A%' │ If an escape character precedes a special symbol or another escape character, the following character is matched literally and in case-insensitive manner. Something like the Django ORM uses UPPER to get around it. │ x LIKE ALL ('A%','%B','%C%') │ x LIKE 'A%' │ I have a Zope web app that uses hand coded SQL (PostgreSQL) statements. ILIKE will use index, but only in some case. │ THIS expression … │ IS equivalent to this expression … │ If you build an index like: CREATE INDEX idxindexname ON yourtable (LOWER (columnname) ASC NULLS LAST) Lower will use index. I'm working with SQl Server and Oracle here but I'm interested if this is possible in any RDBMS at all.ĪNY any string in the list.
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