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Could you tell my why the following isnt working in postgres sql?: See updated code below UPDATE: I expect the query to return "0.30" as float. This construct is only for testing purposes, i have some complex querys which depend on this conditional structure... BUt i dont know how to fix it.. Result is: ERROR: syntax error at or near "1" LINE 4: if 1=1 then UPDATE: This construction appears in a function... so I want to do following: CREATE FUNCTION f_test(myvalue integer) RETURNS float AS $$ BEGIN select ( case (select '1') when '1' then if 1=1 then 0.30::float else 0.50::float end else 1.00:

I'm coding in SML for an assignment and I've done a few practice problems and I feel like I'm missing something- I feel like I'm using too many case statements. Here's what I'm doing and the problem statements for what I'm having trouble with.: Write a function all_except_option, which takes a string and a string list. Return NONE if the string is not in the list, else return SOME lst where lst is like the argument list except the string is not in it. fun all_except_option(str : string, lst : string list) = case lst of [] => NONE | x::xs => case same_string(x, str) of true => SOME xs | false =

I'm working on an Android App where the user has different options for sorting the displayed data that comes from the database. Currently my orderBy string that I pass to Androids query() method looks like this: "LOWER("+columnName+") ASC" The problem with this is that if the data type in the column specified by columnName is integer, calling LOWER() on it will cause it to be sorted alphabetically, i.e. based only on the leftmost digit, which of course doesn't make any sense for numeric data. Hence I only want to apply LOWER() if the data type of the column is not integer. What I have in mind

I'm trying to update a set of records ( boolean fields ) in a single query if possible. The input is coming from paginated radio controls, so a given POST will have the page's worth of IDs with a true or false value. I was trying to go this direction: UPDATE my_table SET field = CASE WHEN id IN (/* true ids */) THEN TRUE WHEN id IN (/* false ids */) THEN FALSE END But this resulted in the "true id" rows being updated to true , and ALL other rows were updated to false . I assume I've made some gross syntactical error, or perhaps that I'm approaching this incorrectly. Any thoughts on a solution?

Why is this int switch valid: public class Foo { private final static int ONE = 1; private final static int TWO = 2; public static void main(String[] args) { int value = 1; switch (value) { case ONE: break; case TWO: break; } } } While this enum switch is not: import java.lang.annotation.RetentionPolicy; public class Foo { private final static RetentionPolicy RT = RetentionPolicy.RUNTIME; private final static RetentionPolicy SRC = RetentionPolicy.SOURCE; public static void main(String[] args) { RetentionPolicy value = RetentionPolicy.RUNTIME; switch (value) { case RT: break; case SRC: break; }

I have this Tags table CREATE TABLE IF NOT EXISTS `Tags` ( `id_tag` int(10) unsigned NOT NULL auto_increment, `tag` varchar(255) default NULL, PRIMARY KEY (`id_tag`), UNIQUE KEY `tag` (`tag`), KEY `id_tag` (`id_tag`), KEY `tag_2` (`tag`), KEY `tag_3` (`tag`), KEY `tag_4` (`tag`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=2937 ; INSERT INTO `Tags` (`id_tag`, `tag`) VALUES (1816, '(class'), (2642, 'class\r\n\r\nâ?¬35'), (1906, 'class\r\nif'), (1398, 'class'), (2436, 'class)'), (1973, 'class:\n1.'), (2791, 'classes'), (1325, 'New'), (2185, 'pack'), (1905, 'packed'), (1389, 'WebClass');