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| @@ 492-510 (lines=19) @@ | ||
| 489 | * @param array $options |
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| 490 | * @return int |
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| 491 | */ |
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| 492 | public function estimateRowCount( $table, $vars = '*', $conds = '', |
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| 493 | $fname = __METHOD__, $options = [] |
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| 494 | ) { |
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| 495 | // http://msdn2.microsoft.com/en-us/library/aa259203.aspx |
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| 496 | $options['EXPLAIN'] = true; |
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| 497 | $options['FOR COUNT'] = true; |
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| 498 | $res = $this->select( $table, $vars, $conds, $fname, $options ); |
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| 499 | ||
| 500 | $rows = -1; |
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| 501 | if ( $res ) { |
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| 502 | $row = $this->fetchRow( $res ); |
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| 503 | ||
| 504 | if ( isset( $row['EstimateRows'] ) ) { |
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| 505 | $rows = (int)$row['EstimateRows']; |
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| 506 | } |
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| 507 | } |
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| 508 | ||
| 509 | return $rows; |
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| 510 | } |
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| 511 | ||
| 512 | /** |
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| 513 | * Returns information about an index |
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| @@ 405-420 (lines=16) @@ | ||
| 402 | * @param array $options |
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| 403 | * @return int |
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| 404 | */ |
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| 405 | public function estimateRowCount( $table, $vars = '*', $conds = '', |
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| 406 | $fname = __METHOD__, $options = [] |
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| 407 | ) { |
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| 408 | $options['EXPLAIN'] = true; |
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| 409 | $res = $this->select( $table, $vars, $conds, $fname, $options ); |
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| 410 | $rows = -1; |
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| 411 | if ( $res ) { |
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| 412 | $row = $this->fetchRow( $res ); |
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| 413 | $count = []; |
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| 414 | if ( preg_match( '/rows=(\d+)/', $row[0], $count ) ) { |
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| 415 | $rows = (int)$count[1]; |
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| 416 | } |
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| 417 | } |
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| 418 | ||
| 419 | return $rows; |
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| 420 | } |
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| 421 | ||
| 422 | public function indexInfo( $table, $index, $fname = __METHOD__ ) { |
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| 423 | $sql = "SELECT indexname FROM pg_indexes WHERE tablename='$table'"; |
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