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<?php |
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/** |
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* Query |
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* |
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* Free Query Builder / Database Abstraction Layer |
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* |
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* @package Query |
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* @author Timothy J. Warren |
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* @copyright Copyright (c) 2012 - 2015 |
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* @link https://github.com/aviat4ion/Query |
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* @license http://philsturgeon.co.uk/code/dbad-license |
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*/ |
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// -------------------------------------------------------------------------- |
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namespace Query\Drivers\Firebird; |
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/** |
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* Firebird Specific SQL |
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* |
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* @package Query |
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* @subpackage Drivers |
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*/ |
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class SQL extends \Query\AbstractSQL { |
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/** |
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* Limit clause |
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* |
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* @param string $sql |
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* @param int $limit |
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* @param int|bool $offset |
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* @return string |
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*/ |
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public function limit($sql, $limit, $offset=FALSE) |
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{ |
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// Keep the current sql string safe for a moment |
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$orig_sql = $sql; |
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$sql = 'FIRST '. (int) $limit; |
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if ($offset > 0) |
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{ |
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$sql .= ' SKIP '. (int) $offset; |
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} |
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$sql = preg_replace("`SELECT`i", "SELECT {$sql}", $orig_sql); |
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return $sql; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Get the query plan for the sql query |
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* |
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* @param string $sql |
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* @return string |
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*/ |
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public function explain($sql) |
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{ |
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return $sql; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Random ordering keyword |
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* |
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* @return string |
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*/ |
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public function random() |
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{ |
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return NULL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Returns sql to list other databases |
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* |
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* @return NULL |
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*/ |
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public function db_list() |
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{ |
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return NULL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Returns sql to list tables |
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* |
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* @return string |
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*/ |
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public function table_list() |
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{ |
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return <<<SQL |
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SELECT TRIM("RDB\$RELATION_NAME") |
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FROM "RDB\$RELATIONS" |
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WHERE "RDB\$SYSTEM_FLAG"=0 |
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AND "RDB\$VIEW_BLR" IS NULL |
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ORDER BY "RDB\$RELATION_NAME" ASC |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Returns sql to list system tables |
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* |
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* @return string |
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*/ |
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public function system_table_list() |
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{ |
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return <<<SQL |
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SELECT TRIM("RDB\$RELATION_NAME") |
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FROM "RDB\$RELATIONS" |
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WHERE "RDB\$SYSTEM_FLAG"=1 |
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ORDER BY "RDB\$RELATION_NAME" ASC |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Returns sql to list views |
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* |
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* @return string |
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*/ |
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public function view_list() |
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{ |
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return <<<SQL |
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SELECT DISTINCT TRIM("RDB\$VIEW_NAME") |
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FROM "RDB\$VIEW_RELATIONS" |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Returns sql to list triggers |
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* |
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* @return string |
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*/ |
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public function trigger_list() |
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{ |
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return <<<SQL |
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SELECT * FROM "RDB\$FUNCTIONS" |
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WHERE "RDB\$SYSTEM_FLAG" = 0 |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Return sql to list functions |
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* |
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* @return string |
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*/ |
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public function function_list() |
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{ |
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return 'SELECT * FROM "RDB$FUNCTIONS"'; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Return sql to list stored procedures |
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* |
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* @return string |
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*/ |
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public function procedure_list() |
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{ |
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return <<<SQL |
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SELECT "RDB\$PROCEDURE_NAME", |
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"RDB\$PROCEDURE_ID", |
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"RDB\$PROCEDURE_INPUTS", |
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"RDB\$PROCEDURE_OUTPUTS", |
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"RDB\$DESCRIPTION", |
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"RDB\$PROCEDURE_SOURCE", |
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"RDB\$SECURITY_CLASS", |
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"RDB\$OWNER_NAME", |
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"RDB\$RUNTIME", |
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"RDB\$SYSTEM_FLAG", |
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"RDB\$PROCEDURE_TYPE", |
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"RDB\$VALID_BLR" |
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FROM "RDB\$PROCEDURES" |
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ORDER BY "RDB\$PROCEDURE_NAME" ASC |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Return sql to list sequences |
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* |
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* @return string |
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*/ |
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public function sequence_list() |
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{ |
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return <<<SQL |
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SELECT TRIM("RDB\$GENERATOR_NAME") |
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FROM "RDB\$GENERATORS" |
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WHERE "RDB\$SYSTEM_FLAG" = 0 |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Return sql to list columns of the specified table |
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* |
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* @param string $table |
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* @return string |
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*/ |
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public function column_list($table) |
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{ |
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return <<<SQL |
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SELECT r.RDB\$FIELD_NAME AS field_name, |
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r.RDB\$DESCRIPTION AS field_description, |
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r.RDB\$DEFAULT_VALUE AS field_default_value, |
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r.RDB\$NULL_FLAG AS field_not_null_constraint, |
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f.RDB\$FIELD_LENGTH AS field_length, |
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f.RDB\$FIELD_PRECISION AS field_precision, |
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f.RDB\$FIELD_SCALE AS field_scale, |
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CASE f.RDB\$FIELD_TYPE |
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WHEN 261 THEN 'BLOB' |
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WHEN 14 THEN 'CHAR' |
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WHEN 40 THEN 'CSTRING' |
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WHEN 11 THEN 'D_FLOAT' |
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WHEN 27 THEN 'DOUBLE' |
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WHEN 10 THEN 'FLOAT' |
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WHEN 16 THEN 'INT64' |
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WHEN 8 THEN 'INTEGER' |
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WHEN 9 THEN 'QUAD' |
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WHEN 7 THEN 'SMALLINT' |
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WHEN 12 THEN 'DATE' |
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WHEN 13 THEN 'TIME' |
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WHEN 35 THEN 'TIMESTAMP' |
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WHEN 37 THEN 'VARCHAR' |
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ELSE 'UNKNOWN' |
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END AS field_type, |
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f.RDB\$FIELD_SUB_TYPE AS field_subtype, |
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coll.RDB\$COLLATION_NAME AS field_collation, |
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cset.RDB\$CHARACTER_SET_NAME AS field_charset |
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FROM RDB\$RELATION_FIELDS r |
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LEFT JOIN RDB\$FIELDS f ON r.RDB\$FIELD_SOURCE = f.RDB\$FIELD_NAME |
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LEFT JOIN RDB\$COLLATIONS coll ON f.RDB\$COLLATION_ID = coll.RDB\$COLLATION_ID |
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LEFT JOIN RDB\$CHARACTER_SETS cset ON f.RDB\$CHARACTER_SET_ID = cset.RDB\$CHARACTER_SET_ID |
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WHERE r.RDB\$RELATION_NAME='{$table}' |
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ORDER BY r.RDB\$FIELD_POSITION |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* SQL to show list of field types |
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* |
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* @return string |
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*/ |
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public function type_list() |
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{ |
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return <<<SQL |
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SELECT "RDB\$TYPE_NAME", "RDB\$FIELD_NAME" FROM "RDB\$TYPES" |
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WHERE "RDB\$FIELD_NAME" IN ('RDB\$FIELD_TYPE', 'RDB\$FIELD_SUB_TYPE') |
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ORDER BY "RDB\$FIELD_NAME" DESC, "RDB\$TYPE_NAME" ASC |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Get the list of foreign keys for the current |
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* table |
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* |
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* @param string $table |
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* @return string |
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*/ |
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public function fk_list($table) |
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{ |
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return <<<SQL |
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SELECT DISTINCT |
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TRIM(d1.RDB\$FIELD_NAME) AS "child_column", |
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TRIM(d2.RDB\$DEPENDED_ON_NAME) AS "parent_table", |
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TRIM(d2.RDB\$FIELD_NAME) AS "parent_column", |
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TRIM(refc.RDB\$UPDATE_RULE) AS "update", |
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TRIM(refc.RDB\$DELETE_RULE) AS "delete" |
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FROM RDB\$RELATION_CONSTRAINTS AS rc |
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LEFT JOIN RDB\$REF_CONSTRAINTS refc ON rc.RDB\$CONSTRAINT_NAME = refc.RDB\$CONSTRAINT_NAME |
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LEFT JOIN RDB\$DEPENDENCIES d1 ON d1.RDB\$DEPENDED_ON_NAME = rc.RDB\$RELATION_NAME |
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LEFT JOIN RDB\$DEPENDENCIES d2 ON d1.RDB\$DEPENDENT_NAME = d2.RDB\$DEPENDENT_NAME |
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WHERE rc.RDB\$CONSTRAINT_TYPE = 'FOREIGN KEY' |
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AND d1.RDB\$DEPENDED_ON_NAME <> d2.RDB\$DEPENDED_ON_NAME |
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AND d1.RDB\$FIELD_NAME <> d2.RDB\$FIELD_NAME |
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AND rc.RDB\$RELATION_NAME = '{$table}' -- table name |
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SQL; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Get the list of indexes for the current table |
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* |
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* @param string $table |
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* @return array |
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*/ |
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public function index_list($table) |
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{ |
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return <<<SQL |
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SELECT "RDB\$INDEX_NAME", "RDB\$UNIQUE_FLAG", "RDB\$FOREIGN_KEY" |
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FROM "RDB\$INDICES" |
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WHERE "RDB\$RELATION_NAME"='{$table}' |
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SQL; |
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} |
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} |
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//End of firebird_sql.php |