[2] | 1 | <?php |
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| 2 | |
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| 3 | /** |
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| 4 | V4.51 29 July 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved. |
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| 5 | Released under both BSD license and Lesser GPL library license. |
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| 6 | Whenever there is any discrepancy between the two licenses, |
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| 7 | the BSD license will take precedence. |
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| 8 | |
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| 9 | Set tabs to 4 for best viewing. |
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| 10 | |
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| 11 | */ |
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| 12 | |
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| 13 | // security - hide paths |
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| 14 | if (!defined('ADODB_DIR')) die(); |
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| 15 | |
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| 16 | class ADODB2_postgres extends ADODB_DataDict { |
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| 17 | |
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| 18 | var $databaseType = 'postgres'; |
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| 19 | var $seqField = false; |
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| 20 | var $seqPrefix = 'SEQ_'; |
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| 21 | var $addCol = ' ADD COLUMN'; |
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| 22 | var $quote = '"'; |
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| 23 | |
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| 24 | function MetaType($t,$len=-1,$fieldobj=false) |
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| 25 | { |
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| 26 | if (is_object($t)) { |
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| 27 | $fieldobj = $t; |
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| 28 | $t = $fieldobj->type; |
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| 29 | $len = $fieldobj->max_length; |
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| 30 | } |
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| 31 | switch (strtoupper($t)) { |
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| 32 | case 'INTERVAL': |
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| 33 | case 'CHAR': |
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| 34 | case 'CHARACTER': |
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| 35 | case 'VARCHAR': |
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| 36 | case 'NAME': |
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| 37 | case 'BPCHAR': |
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| 38 | if ($len <= $this->blobSize) return 'C'; |
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| 39 | |
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| 40 | case 'TEXT': |
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| 41 | return 'X'; |
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| 42 | |
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| 43 | case 'IMAGE': // user defined type |
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| 44 | case 'BLOB': // user defined type |
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| 45 | case 'BIT': // This is a bit string, not a single bit, so don't return 'L' |
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| 46 | case 'VARBIT': |
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| 47 | case 'BYTEA': |
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| 48 | return 'B'; |
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| 49 | |
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| 50 | case 'BOOL': |
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| 51 | case 'BOOLEAN': |
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| 52 | return 'L'; |
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| 53 | |
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| 54 | case 'DATE': |
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| 55 | return 'D'; |
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| 56 | |
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| 57 | case 'TIME': |
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| 58 | case 'DATETIME': |
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| 59 | case 'TIMESTAMP': |
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| 60 | case 'TIMESTAMPTZ': |
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| 61 | return 'T'; |
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| 62 | |
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| 63 | case 'INTEGER': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I' : 'R'; |
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| 64 | case 'SMALLINT': |
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| 65 | case 'INT2': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I2' : 'R'; |
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| 66 | case 'INT4': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I4' : 'R'; |
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| 67 | case 'BIGINT': |
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| 68 | case 'INT8': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I8' : 'R'; |
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| 69 | |
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| 70 | case 'OID': |
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| 71 | case 'SERIAL': |
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| 72 | return 'R'; |
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| 73 | |
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| 74 | case 'FLOAT4': |
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| 75 | case 'FLOAT8': |
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| 76 | case 'DOUBLE PRECISION': |
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| 77 | case 'REAL': |
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| 78 | return 'F'; |
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| 79 | |
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| 80 | default: |
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| 81 | return 'N'; |
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| 82 | } |
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| 83 | } |
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| 84 | |
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| 85 | function ActualType($meta) |
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| 86 | { |
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| 87 | switch($meta) { |
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| 88 | case 'C': return 'VARCHAR'; |
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| 89 | case 'XL': |
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| 90 | case 'X': return 'TEXT'; |
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| 91 | |
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| 92 | case 'C2': return 'VARCHAR'; |
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| 93 | case 'X2': return 'TEXT'; |
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| 94 | |
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| 95 | case 'B': return 'BYTEA'; |
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| 96 | |
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| 97 | case 'D': return 'DATE'; |
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| 98 | case 'T': return 'TIMESTAMP'; |
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| 99 | |
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| 100 | case 'L': return 'SMALLINT'; |
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| 101 | case 'I': return 'INTEGER'; |
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| 102 | case 'I1': return 'SMALLINT'; |
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| 103 | case 'I2': return 'INT2'; |
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| 104 | case 'I4': return 'INT4'; |
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| 105 | case 'I8': return 'INT8'; |
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| 106 | |
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| 107 | case 'F': return 'FLOAT8'; |
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| 108 | case 'N': return 'NUMERIC'; |
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| 109 | default: |
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| 110 | return $meta; |
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| 111 | } |
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| 112 | } |
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| 113 | |
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| 114 | /* The following does not work in Pg 6.0 - does anyone want to contribute code? |
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| 115 | |
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| 116 | //"ALTER TABLE table ALTER COLUMN column SET DEFAULT mydef" and |
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| 117 | //"ALTER TABLE table ALTER COLUMN column DROP DEFAULT mydef" |
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| 118 | //"ALTER TABLE table ALTER COLUMN column SET NOT NULL" and |
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| 119 | //"ALTER TABLE table ALTER COLUMN column DROP NOT NULL"*/ |
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| 120 | function AlterColumnSQL($tabname, $flds) |
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| 121 | { |
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| 122 | if ($this->debug) ADOConnection::outp("AlterColumnSQL not supported for PostgreSQL"); |
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| 123 | return array(); |
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| 124 | } |
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| 125 | |
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| 126 | |
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| 127 | function DropColumnSQL($tabname, $flds) |
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| 128 | { |
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| 129 | if ($this->debug) ADOConnection::outp("DropColumnSQL only works with PostgreSQL 7.3+"); |
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| 130 | return ADODB_DataDict::DropColumnSQL($tabname, $flds)."/* only works for PostgreSQL 7.3+ */"; |
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| 131 | } |
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| 132 | |
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| 133 | // return string must begin with space |
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| 134 | function _CreateSuffix($fname, &$ftype, $fnotnull,$fdefault,$fautoinc,$fconstraint) |
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| 135 | { |
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| 136 | if ($fautoinc) { |
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| 137 | $ftype = 'SERIAL'; |
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| 138 | return ''; |
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| 139 | } |
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| 140 | $suffix = ''; |
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| 141 | if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault"; |
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| 142 | if ($fnotnull) $suffix .= ' NOT NULL'; |
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| 143 | if ($fconstraint) $suffix .= ' '.$fconstraint; |
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| 144 | return $suffix; |
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| 145 | } |
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| 146 | |
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| 147 | function _DropAutoIncrement($t) |
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| 148 | { |
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| 149 | return "drop sequence ".$t."_m_id_seq"; |
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| 150 | } |
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| 151 | |
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| 152 | /* |
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| 153 | CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( |
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| 154 | { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ] |
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| 155 | | table_constraint } [, ... ] |
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| 156 | ) |
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| 157 | [ INHERITS ( parent_table [, ... ] ) ] |
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| 158 | [ WITH OIDS | WITHOUT OIDS ] |
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| 159 | where column_constraint is: |
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| 160 | [ CONSTRAINT constraint_name ] |
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| 161 | { NOT NULL | NULL | UNIQUE | PRIMARY KEY | |
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| 162 | CHECK (expression) | |
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| 163 | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] |
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| 164 | [ ON DELETE action ] [ ON UPDATE action ] } |
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| 165 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
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| 166 | and table_constraint is: |
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| 167 | [ CONSTRAINT constraint_name ] |
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| 168 | { UNIQUE ( column_name [, ... ] ) | |
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| 169 | PRIMARY KEY ( column_name [, ... ] ) | |
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| 170 | CHECK ( expression ) | |
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| 171 | FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] |
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| 172 | [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } |
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| 173 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
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| 174 | */ |
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| 175 | |
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| 176 | |
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| 177 | /* |
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| 178 | CREATE [ UNIQUE ] INDEX index_name ON table |
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| 179 | [ USING acc_method ] ( column [ ops_name ] [, ...] ) |
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| 180 | [ WHERE predicate ] |
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| 181 | CREATE [ UNIQUE ] INDEX index_name ON table |
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| 182 | [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) |
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| 183 | [ WHERE predicate ] |
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| 184 | */ |
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| 185 | function _IndexSQL($idxname, $tabname, $flds, $idxoptions) |
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| 186 | { |
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| 187 | $sql = array(); |
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| 188 | |
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| 189 | if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) { |
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| 190 | $sql[] = sprintf ($this->dropIndex, $idxname, $tabname); |
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| 191 | if ( isset($idxoptions['DROP']) ) |
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| 192 | return $sql; |
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| 193 | } |
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| 194 | |
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| 195 | if ( empty ($flds) ) { |
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| 196 | return $sql; |
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| 197 | } |
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| 198 | |
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| 199 | $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : ''; |
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| 200 | |
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| 201 | $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' '; |
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| 202 | |
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| 203 | if (isset($idxoptions['HASH'])) |
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| 204 | $s .= 'USING HASH '; |
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| 205 | |
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| 206 | if ( isset($idxoptions[$this->upperName]) ) |
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| 207 | $s .= $idxoptions[$this->upperName]; |
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| 208 | |
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| 209 | if ( is_array($flds) ) |
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| 210 | $flds = implode(', ',$flds); |
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| 211 | $s .= '(' . $flds . ')'; |
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| 212 | $sql[] = $s; |
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| 213 | |
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| 214 | return $sql; |
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| 215 | } |
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| 216 | } |
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| 217 | ?> |
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