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| 1 | + |
| 2 | +CREATE TYPE currency; |
| 3 | + |
| 4 | +CREATE FUNCTION supported_currencies() |
| 5 | + RETURNS SETOF currency |
| 6 | + AS '$libdir/currency.so' |
| 7 | + LANGUAGE C IMMUTABLE STRICT; |
| 8 | + |
| 9 | +CREATE FUNCTION currency_in(cstring) |
| 10 | + RETURNS currency |
| 11 | + AS '$libdir/currency.so' |
| 12 | + LANGUAGE C IMMUTABLE STRICT; |
| 13 | + |
| 14 | +CREATE FUNCTION currency_out(currency) |
| 15 | + RETURNS cstring |
| 16 | + AS '$libdir/currency.so' |
| 17 | + LANGUAGE C IMMUTABLE STRICT; |
| 18 | + |
| 19 | +CREATE FUNCTION currency_recv(internal) |
| 20 | + RETURNS currency |
| 21 | + AS '$libdir/currency.so' |
| 22 | + LANGUAGE C IMMUTABLE STRICT; |
| 23 | + |
| 24 | +CREATE FUNCTION currency_send(currency) |
| 25 | + RETURNS bytea |
| 26 | + AS '$libdir/currency.so' |
| 27 | + LANGUAGE C IMMUTABLE STRICT; |
| 28 | + |
| 29 | +CREATE TYPE currency ( |
| 30 | + internallength = 1, |
| 31 | + input = currency_in, |
| 32 | + output = currency_out, |
| 33 | + send = currency_send, |
| 34 | + receive = currency_recv, |
| 35 | + alignment = char, |
| 36 | + PASSEDBYVALUE |
| 37 | +); |
| 38 | + |
| 39 | +COMMENT ON TYPE currency |
| 40 | + IS '1-byte ISO 4217 Currency Code'; |
| 41 | + |
| 42 | +CREATE FUNCTION currency_lt(currency, currency) |
| 43 | + RETURNS BOOL |
| 44 | + AS '$libdir/currency.so' |
| 45 | + LANGUAGE C IMMUTABLE STRICT; |
| 46 | + |
| 47 | +COMMENT ON FUNCTION currency_lt(currency, currency) IS 'implementation of < operator'; |
| 48 | + |
| 49 | +CREATE FUNCTION currency_le(currency, currency) |
| 50 | + RETURNS BOOL |
| 51 | + AS '$libdir/currency.so' |
| 52 | + LANGUAGE C IMMUTABLE STRICT; |
| 53 | + |
| 54 | +COMMENT ON FUNCTION currency_le(currency, currency) IS 'implementation of <= operator'; |
| 55 | + |
| 56 | +CREATE FUNCTION currency_eq(currency, currency) |
| 57 | + RETURNS BOOL |
| 58 | + AS '$libdir/currency.so' |
| 59 | + LANGUAGE C IMMUTABLE STRICT; |
| 60 | + |
| 61 | +COMMENT ON FUNCTION currency_eq(currency, currency) IS 'implementation of = operator'; |
| 62 | + |
| 63 | +CREATE FUNCTION currency_neq(currency, currency) |
| 64 | + RETURNS BOOL |
| 65 | + AS '$libdir/currency.so' |
| 66 | + LANGUAGE C IMMUTABLE STRICT; |
| 67 | + |
| 68 | +COMMENT ON FUNCTION currency_neq(currency, currency) IS 'implementation of <> operator'; |
| 69 | + |
| 70 | +CREATE FUNCTION currency_ge(currency, currency) |
| 71 | + RETURNS BOOL |
| 72 | + AS '$libdir/currency.so' |
| 73 | + LANGUAGE C IMMUTABLE STRICT; |
| 74 | + |
| 75 | +COMMENT ON FUNCTION currency_ge(currency, currency) IS 'implementation of >= operator'; |
| 76 | + |
| 77 | +CREATE FUNCTION currency_gt(currency, currency) |
| 78 | + RETURNS BOOL |
| 79 | + AS '$libdir/currency.so' |
| 80 | + LANGUAGE C IMMUTABLE STRICT; |
| 81 | + |
| 82 | +COMMENT ON FUNCTION currency_gt(currency, currency) IS 'implementation of > operator'; |
| 83 | + |
| 84 | +CREATE FUNCTION hash_currency(currency) |
| 85 | + RETURNS integer |
| 86 | + AS '$libdir/currency.so' |
| 87 | + LANGUAGE C IMMUTABLE STRICT; |
| 88 | + |
| 89 | +COMMENT ON FUNCTION hash_currency(currency) IS 'hash'; |
| 90 | + |
| 91 | +CREATE OPERATOR < ( |
| 92 | + leftarg = currency, |
| 93 | + rightarg = currency, |
| 94 | + procedure = currency_lt, |
| 95 | + commutator = >, |
| 96 | + negator = >=, |
| 97 | + restrict = scalarltsel, |
| 98 | + join = scalarltjoinsel |
| 99 | +); |
| 100 | + |
| 101 | +COMMENT ON OPERATOR <(currency, currency) IS 'less than'; |
| 102 | + |
| 103 | +CREATE OPERATOR <= ( |
| 104 | + leftarg = currency, |
| 105 | + rightarg = currency, |
| 106 | + procedure = currency_le, |
| 107 | + commutator = >=, |
| 108 | + negator = >, |
| 109 | + restrict = scalarltsel, |
| 110 | + join = scalarltjoinsel |
| 111 | +); |
| 112 | + |
| 113 | +COMMENT ON OPERATOR <=(currency, currency) IS 'less than or equal'; |
| 114 | + |
| 115 | +CREATE OPERATOR = ( |
| 116 | + leftarg = currency, |
| 117 | + rightarg = currency, |
| 118 | + procedure = currency_eq, |
| 119 | + commutator = =, |
| 120 | + negator = <>, |
| 121 | + restrict = eqsel, |
| 122 | + join = eqjoinsel, |
| 123 | + HASHES, MERGES |
| 124 | +); |
| 125 | + |
| 126 | +COMMENT ON OPERATOR =(currency, currency) IS 'equal'; |
| 127 | + |
| 128 | +CREATE OPERATOR >= ( |
| 129 | + leftarg = currency, |
| 130 | + rightarg = currency, |
| 131 | + procedure = currency_ge, |
| 132 | + commutator = <=, |
| 133 | + negator = <, |
| 134 | + restrict = scalargtsel, |
| 135 | + join = scalargtjoinsel |
| 136 | +); |
| 137 | + |
| 138 | +COMMENT ON OPERATOR >=(currency, currency) IS 'greater than or equal'; |
| 139 | + |
| 140 | +CREATE OPERATOR > ( |
| 141 | + leftarg = currency, |
| 142 | + rightarg = currency, |
| 143 | + procedure = currency_gt, |
| 144 | + commutator = <, |
| 145 | + negator = <=, |
| 146 | + restrict = scalargtsel, |
| 147 | + join = scalargtjoinsel |
| 148 | +); |
| 149 | + |
| 150 | +COMMENT ON OPERATOR >(currency, currency) IS 'greater than'; |
| 151 | + |
| 152 | +CREATE OPERATOR <> ( |
| 153 | + leftarg = currency, |
| 154 | + rightarg = currency, |
| 155 | + procedure = currency_neq, |
| 156 | + commutator = <>, |
| 157 | + negator = =, |
| 158 | + restrict = neqsel, |
| 159 | + join = neqjoinsel |
| 160 | +); |
| 161 | + |
| 162 | +COMMENT ON OPERATOR <>(currency, currency) IS 'not equal'; |
| 163 | + |
| 164 | +CREATE FUNCTION currency_cmp(currency, currency) |
| 165 | + RETURNS int4 |
| 166 | + AS '$libdir/currency.so' |
| 167 | + LANGUAGE C IMMUTABLE STRICT; |
| 168 | + |
| 169 | +CREATE OPERATOR CLASS currency_ops |
| 170 | + DEFAULT FOR TYPE currency USING btree AS |
| 171 | + OPERATOR 1 < , |
| 172 | + OPERATOR 2 <= , |
| 173 | + OPERATOR 3 = , |
| 174 | + OPERATOR 4 >= , |
| 175 | + OPERATOR 5 > , |
| 176 | + FUNCTION 1 currency_cmp(currency, currency); |
| 177 | + |
| 178 | +CREATE OPERATOR CLASS currency_ops |
| 179 | + DEFAULT FOR TYPE currency USING hash AS |
| 180 | + OPERATOR 1 = , |
| 181 | + FUNCTION 1 hash_currency(currency); |
| 182 | + |
| 183 | +DO $$ |
| 184 | +DECLARE version_num integer; |
| 185 | +BEGIN |
| 186 | + SELECT current_setting('server_version_num') INTO STRICT version_num; |
| 187 | + IF version_num > 90600 THEN |
| 188 | + EXECUTE $E$ ALTER FUNCTION currency_in(cstring) PARALLEL SAFE $E$; |
| 189 | + EXECUTE $E$ ALTER FUNCTION currency_out(currency) PARALLEL SAFE $E$; |
| 190 | + EXECUTE $E$ ALTER FUNCTION currency_recv(internal) PARALLEL SAFE $E$; |
| 191 | + EXECUTE $E$ ALTER FUNCTION currency_send(currency) PARALLEL SAFE $E$; |
| 192 | + EXECUTE $E$ ALTER FUNCTION currency_eq(currency, currency) PARALLEL SAFE $E$; |
| 193 | + EXECUTE $E$ ALTER FUNCTION currency_neq(currency, currency) PARALLEL SAFE $E$; |
| 194 | + EXECUTE $E$ ALTER FUNCTION currency_lt(currency, currency) PARALLEL SAFE $E$; |
| 195 | + EXECUTE $E$ ALTER FUNCTION currency_le(currency, currency) PARALLEL SAFE $E$; |
| 196 | + EXECUTE $E$ ALTER FUNCTION currency_gt(currency, currency) PARALLEL SAFE $E$; |
| 197 | + EXECUTE $E$ ALTER FUNCTION currency_ge(currency, currency) PARALLEL SAFE $E$; |
| 198 | + EXECUTE $E$ ALTER FUNCTION currency_cmp(currency, currency) PARALLEL SAFE $E$; |
| 199 | + EXECUTE $E$ ALTER FUNCTION hash_currency(currency) PARALLEL SAFE $E$; |
| 200 | + END IF; |
| 201 | +END; |
| 202 | +$$; |
| 203 | + |
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