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States') is evaluated to 13. LENGTH('China') is evaluated to 5. LOCATE - Locating Substrings The LOCATE(str, substr [, start]) function searches a substring and returns its position. For example: LOCATE ... ). Therefore, the position of the first character is 1 . Zero ( 0 ) is returned if the substring

(no Aggregates) The following query groups all the countries by their first letter: SELECT SUBSTRING (c.name, 1, 1) FROM Country c GROUP BY SUBSTRING (c.name, 1, 1); The FROM clause defines iteration ... (which does not use aggregates) is equivalent to the following query: SELECT DISTINCT SUBSTRING (c.name, 1

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression substring (    ... ) Create an expression for substring extraction. Extracts a substring of given length starting ... expression len - length expression Return: expression corresponding to substring extraction Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression substring (    Expression  x,     Expression  from ) Create an expression for substring extraction. Extracts a substring starting at the specified position through to end of the string. First

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression substring (    Expression  x,    int from ) Create an expression for substring extraction. Extracts a substring starting at the specified position through to end of the string. First position

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression substring (    ... an expression for substring extraction. Extracts a substring of given length starting at the specified position ... : expression corresponding to substring extraction Since: JPA 2.0

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. i think it should also be possible to use char/Character types

, SOME, SQRT, SUBSTRING , SUM, THEN,TRAILING, TRIM, TRUE, TYPE, UNKNOWN, UPDATE, UPPER, VALUE

, substring , ... ). Data expressions ( currentDate , currentTime , currentTimestamp ). Collection

, upper , concat , substring , ... ). Collection expressions  ( isEmpty , isNotEmpty

. Parameters: x - expression Return: square root Since: JPA 2.0 Expression substring ( Expression  x,  Expression  from) Create an expression for substring extraction. Extracts a substring ... - string expression from - start position expression Return: expression corresponding to substring

  The sql that works is ORDER BY CAST( SUBSTR (username FROM 4) AS UNSIGNED) ASC Using JPQL SELECT u FROM Users u ORDER BY SUBSTRING (u.username,4)*1 ASC If you have other alternative for JPA

I have a question about partial indexing. For example, a field of String type ttt, will be distinguished by the first 5 characters, then I can make a index of substr (ttt,1,5) in MySQL. With ObjectDB, how can I write the annotation for this purpose? TIA gzdillon Lai Yang Currently ObjectDB supports

a unique substring from the query plan XML, so specifying the index name should work. support Support ... ? If it is, then any unique substring from that query plan that doesn't depend on parameters should work

ParseException {         String dateOfBirthStr = personalNumber. substring (0