Class | Sequel::JDBC::HSQLDB::Dataset |
In: |
lib/sequel/adapters/jdbc/hsqldb.rb
|
Parent: | JDBC::Dataset |
BITWISE_METHOD_MAP | = | {:& =>:BITAND, :| => :BITOR, :^ => :BITXOR} | ||
BOOL_TRUE | = | 'TRUE'.freeze | ||
BOOL_FALSE | = | 'FALSE'.freeze | ||
SELECT_CLAUSE_METHODS | = | clause_methods(:select, %w'select distinct columns from join where group having compounds order limit lock') | HSQLDB does support common table expressions, but the support is broken. CTEs operate more like temprorary tables or views, lasting longer than the duration of the expression. CTEs in earlier queries might take precedence over CTEs with the same name in later queries. Also, if any CTE is recursive, all CTEs must be recursive. If you want to use CTEs with HSQLDB, you‘ll have to manually modify the dataset to allow it. | |
SQL_WITH_RECURSIVE | = | "WITH RECURSIVE ".freeze | ||
APOS | = | Dataset::APOS | ||
HSTAR | = | "H*".freeze | ||
BLOB_OPEN | = | "X'".freeze | ||
BITCOMP_OPEN | = | "((0 - ".freeze | ||
BITCOMP_CLOSE | = | ") - 1)".freeze | ||
DEFAULT_FROM | = | " FROM (VALUES (0))".freeze | ||
TIME_FORMAT | = | "'%H:%M:%S'".freeze |
Handle HSQLDB specific case insensitive LIKE and bitwise operator support.
# File lib/sequel/adapters/jdbc/hsqldb.rb, line 104 104: def complex_expression_sql_append(sql, op, args) 105: case op 106: when :ILIKE, "NOT ILIKE""NOT ILIKE" 107: super(sql, (op == :ILIKE ? :LIKE : "NOT LIKE""NOT LIKE"), [SQL::Function.new(:ucase, args.at(0)), SQL::Function.new(:ucase, args.at(1)) ]) 108: when :&, :|, :^ 109: op = BITWISE_METHOD_MAP[op] 110: sql << complex_expression_arg_pairs(args){|a, b| literal(SQL::Function.new(op, a, b))} 111: when :<< 112: sql << complex_expression_arg_pairs(args){|a, b| "(#{literal(a)} * POWER(2, #{literal(b)}))"} 113: when :>> 114: sql << complex_expression_arg_pairs(args){|a, b| "(#{literal(a)} / POWER(2, #{literal(b)}))"} 115: when 'B~''B~' 116: sql << BITCOMP_OPEN 117: literal_append(sql, args.at(0)) 118: sql << BITCOMP_CLOSE 119: else 120: super 121: end 122: end