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	substring works with string but not with char i want to select all entities whose name starts with a specific letter, i can use this query with a string parameter select f from Foo f where substring(f.name, 1, 1) = ?1 but when i use a char, the query does not return anything.
	Strings in JPQL and Criteria Queries > is evaluated to 5. LOCATE - Locating Substrings The LOCATE(str, substr [, start]) function searches a substring and returns its position. ) is returned if the substring is not found. The third argument (when present) specifies from
	substring(x, from, len) ; substring( substring extraction. Extracts a substring of given length starting at the specified position. First ... corresponding to substring extraction
	substring(x, from) ; substring( Create an expression for substring extraction. Extracts a substring starting at the specified position through to end of the string. First position is 1
	substring(x, from, len) ; substring( substring extraction. Extracts a substring of given length starting at the specified ... > expression corresponding to substring extraction
	substring(x, from, len) ; substring( Create an expression for substring extraction. Extracts a substring of given length starting ... > Returns: expression corresponding to substring extraction
	substring(x, from) ; substring( ) Create an expression for substring extraction. Extracts a substring starting at the specified position through to end of the string. First
	GROUP BY and HAVING clauses SUBSTRING(c.name, 1, 1) FROM Country c GROUP BY SUBSTRING(c.name, 1, 1); The FROM ... class="pre-query"> SELECT DISTINCT SUBSTRING(c.name, 1, 1) FROM Country c GROUP BY ... these countries: SELECT SUBSTRING(c.name, 1, 1), COUNT(c), COUNT(DISTINCT c
	javax.persistence.criteria.CriteriaBuilder JPA 2 JavaDoc Reference Documentation - Used to construct criteria queries, compound selections, expressions, predicates, orderings.
	JPA Criteria API Queries ="/api/java/jpa/criteria/CriteriaBuilder/substring_Expression__Expression_">substring, ...