About regular expression

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JPA Doc
2

substring(x, from, len)

Method javax.persistence.criteria.CriteriaBuilder Expression substring(   Expression x,   Expression from,   Expression len ) Create an expression for substring extraction. Extracts ... - string expression from - start position expression len - length expression Returns: expression corresponding to substring extraction Since: JPA 2.0
JPA Doc
2

substring(x, from, len)

Method javax.persistence.criteria.CriteriaBuilder Expression substring(   Expression x,   Expression from,   Expression len ) Create an expression for substring ... . Parameters: x - string expression from - start position expression len - length expression Returns
Issue
2

Issue with DISTINCT Select

It is getting more and more frustrating :( We've introduced distinct select instead of regular ... expression '$3' for distinct results at com.objectdb.o.MSG.d(MSG.java:61) at com.objectdb.o.QNF.l ... query, so probably $3 in this case is an implicit variable. Invalid order expressions is a common
JPA Doc
2

coalesce()

expression. Returns: coalesce expression Since: JPA 2.0 Selection alias(String name) Assigns an alias ... a predicate to test whether the expression is not null. Create a predicate to test whether the expression is not null. Returns: predicate testing whether the expression is not null Since: JPA 2.0 Predicate
JPA Doc
2

nullif(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression nullif(   Expression x,   Expression y ) Create an expression that tests whether its argument are equal, returning null if they are and the value of the first expression if they are not. Parameters: x - expression y - expression Returns: nullif expression Since: JPA 2.0
JPA Doc
2

nullif(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression nullif(   Expression x,   Expression y ) Create an expression that tests whether its argument are equal, returning null if they are and the value of the first expression if they are not. Parameters: x - expression y - expression Returns: nullif expression Since: JPA 2.0
JPA Doc
2

coalesce(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression coalesce(   Expression x,   Expression y ) Create an expression that returns null if all its arguments evaluate to null, and the value of the first non-null argument otherwise. Parameters: x - expression y - expression Returns: coalesce expression Since: JPA 2.0
JPA Doc
2

coalesce(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression coalesce(   Expression x,   Expression y ) Create an expression that returns null if all its arguments evaluate to null, and the value of the first non-null argument otherwise. Parameters: x - expression y - expression Returns: coalesce expression Since: JPA 2.0
JPA Doc
2

concat(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression concat(   Expression x,   Expression y ) Create an expression for string concatenation. Parameters: x - string expression y - string expression Returns: expression corresponding to concatenation Since: JPA 2.0
JPA Doc
2

concat(x, y)

Method javax.persistence.criteria.CriteriaBuilder Expression concat(   Expression x,   Expression y ) Create an expression for string concatenation. Parameters: x - string expression y - string expression Returns: expression corresponding to concatenation Since: JPA 2.0