321 lines
7.1 KiB
PHP
321 lines
7.1 KiB
PHP
<?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 - 2014
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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\Driver;
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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 Firebird_SQL extends Abstract_SQL {
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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 $offset
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* @return string
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*/
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public function limit($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 "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 "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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* @parma 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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rc.RDB\$CONSTRAINT_NAME AS "constraint_name",
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rc.RDB\$RELATION_NAME AS "on table",
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d1.RDB\$FIELD_NAME AS "on field",
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d2.RDB\$DEPENDED_ON_NAME AS "references table",
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d2.RDB\$FIELD_NAME AS "references field",
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refc.RDB\$UPDATE_RULE AS "on update",
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refc.RDB\$DELETE_RULE AS "on 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
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