binary_oper_exact() * Check for an "exact" match to the specified operand types. * * If one operand is an unknown literal, assume it should be taken to be * the same type as the other operand for this purpose. Also, consider * the possibility that the other operand is a domain type that needs to * be reduced to its base type to find an "exact" match. */
| 271 | * be reduced to its base type to find an "exact" match. |
| 272 | */ |
| 273 | static Oid |
| 274 | binary_oper_exact(List *opname, Oid arg1, Oid arg2) |
| 275 | { |
| 276 | Oid result; |
| 277 | bool was_unknown = false; |
| 278 | |
| 279 | /* Unspecified type for one of the arguments? then use the other */ |
| 280 | if ((arg1 == UNKNOWNOID) && (arg2 != InvalidOid)) |
| 281 | { |
| 282 | arg1 = arg2; |
| 283 | was_unknown = true; |
| 284 | } |
| 285 | else if ((arg2 == UNKNOWNOID) && (arg1 != InvalidOid)) |
| 286 | { |
| 287 | arg2 = arg1; |
| 288 | was_unknown = true; |
| 289 | } |
| 290 | |
| 291 | result = OpernameGetOprid(opname, arg1, arg2); |
| 292 | if (OidIsValid(result)) |
| 293 | return result; |
| 294 | |
| 295 | if (was_unknown) |
| 296 | { |
| 297 | /* arg1 and arg2 are the same here, need only look at arg1 */ |
| 298 | Oid basetype = getBaseType(arg1); |
| 299 | |
| 300 | if (basetype != arg1) |
| 301 | { |
| 302 | result = OpernameGetOprid(opname, basetype, basetype); |
| 303 | if (OidIsValid(result)) |
| 304 | return result; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | return InvalidOid; |
| 309 | } |
| 310 | |
| 311 | |
| 312 | /* oper_select_candidate() |
no test coverage detected