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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