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1 <html> | |
2 <head> | |
3 <title>MayaChemTools:Code:DBUtil.pm</title> | |
4 <meta http-equiv="content-type" content="text/html;charset=utf-8"> | |
5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> | |
6 </head> | |
7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> | |
8 <br/> | |
9 <center> | |
10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> | |
11 </center> | |
12 <br/> | |
13 <pre> | |
14 <a name="package-DBUtil-"></a> 1 <span class="k">package </span><span class="i">DBUtil</span><span class="sc">;</span> | |
15 2 <span class="c">#</span> | |
16 3 <span class="c"># $RCSfile: DBUtil.pm,v $</span> | |
17 4 <span class="c"># $Date: 2015/02/28 20:47:02 $</span> | |
18 5 <span class="c"># $Revision: 1.34 $</span> | |
19 6 <span class="c">#</span> | |
20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | |
21 8 <span class="c">#</span> | |
22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | |
23 10 <span class="c">#</span> | |
24 11 <span class="c"># This file is part of MayaChemTools.</span> | |
25 12 <span class="c">#</span> | |
26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | |
27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | |
28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | |
29 16 <span class="c"># later version.</span> | |
30 17 <span class="c">#</span> | |
31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | |
32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | |
33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> | |
34 21 <span class="c"># details.</span> | |
35 22 <span class="c">#</span> | |
36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | |
37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | |
38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | |
39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | |
40 27 <span class="c">#</span> | |
41 28 | |
42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | |
43 30 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> | |
44 31 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | |
45 32 <span class="k">use</span> <span class="w">DBI</span><span class="sc">;</span> | |
46 33 <span class="k">use</span> <span class="w">TextUtil</span><span class="sc">;</span> | |
47 34 | |
48 35 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span> | |
49 36 | |
50 37 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span> | |
51 38 <span class="i">@EXPORT</span> = <span class="q">qw(DBConnect DBDisconnect DBFetchSchemaTableNames DBSetupDescribeSQL DBSetupSelectSQL DBSQLToTextFile)</span><span class="sc">;</span> | |
52 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> | |
53 40 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span> | |
54 41 | |
55 42 <span class="c"># Connect to a specified database...</span> | |
56 <a name="DBConnect-"></a> 43 <span class="k">sub </span><span class="m">DBConnect</span> <span class="s">{</span> | |
57 44 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$DBName</span><span class="cm">,</span> <span class="i">$DBHost</span><span class="cm">,</span> <span class="i">$DBUser</span><span class="cm">,</span> <span class="i">$DBPassword</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
58 45 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$DataSource</span><span class="s">)</span><span class="sc">;</span> | |
59 46 | |
60 47 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> | |
61 48 <span class="i">$DataSource</span> = <span class="q">qq(DBI:$DBDriver:$DBHost)</span><span class="sc">;</span> | |
62 49 <span class="s">}</span> | |
63 50 <span class="k">else</span> <span class="s">{</span> | |
64 51 <span class="i">$DataSource</span> = <span class="q">qq(DBI:$DBDriver:database=$DBName)</span><span class="sc">;</span> | |
65 52 <span class="k">if</span> <span class="s">(</span><span class="i">$DBHost</span><span class="s">)</span> <span class="s">{</span> | |
66 53 <span class="i">$DataSource</span> .= <span class="q">qq(;host=$DBHost)</span><span class="sc">;</span> | |
67 54 <span class="s">}</span> | |
68 55 <span class="s">}</span> | |
69 56 | |
70 57 <span class="c"># Don't raise the error; otherwise, DBI functions termiates on encountering an error.</span> | |
71 58 <span class="c"># All terminations decisions are made outside of DBI functions...</span> | |
72 59 <span class="i">$DBHandle</span> = <span class="w">DBI</span><span class="w">->connect</span><span class="s">(</span><span class="i">$DataSource</span><span class="cm">,</span> <span class="i">$DBUser</span><span class="cm">,</span> <span class="i">$DBPassword</span><span class="cm">,</span> <span class="s">{</span> <span class="w">RaiseError</span> <span class="cm">=></span> <span class="n">0</span><span class="cm">,</span> <span class="w">AutoCommit</span> <span class="cm">=></span> <span class="n">0</span> <span class="s">}</span><span class="s">)</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Couldn't connect to database..."</span><span class="sc">;</span> | |
73 60 | |
74 61 <span class="k">return</span> <span class="i">$DBHandle</span><span class="sc">;</span> | |
75 62 <span class="s">}</span> | |
76 63 | |
77 64 <span class="c"># Disconnect from a database...</span> | |
78 <a name="DBDisconnect-"></a> 65 <span class="k">sub </span><span class="m">DBDisconnect</span> <span class="s">{</span> | |
79 66 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
80 67 | |
81 68 <span class="i">$DBHandle</span><span class="i">->disconnect</span> <span class="k">or</span> <span class="w">carp</span> <span class="q">"Couldn't disconnect from a database..."</span><span class="sc">;</span> | |
82 69 <span class="s">}</span> | |
83 70 | |
84 71 <span class="c"># Fetch all table name for a database schema...</span> | |
85 <a name="DBFetchSchemaTableNames-"></a> 72 <span class="k">sub </span><span class="m">DBFetchSchemaTableNames</span> <span class="s">{</span> | |
86 73 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
87 74 <span class="k">my</span><span class="s">(</span><span class="i">@SchemaTableNames</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$SQLHandle</span><span class="s">)</span><span class="sc">;</span> | |
88 75 | |
89 76 <span class="i">@SchemaTableNames</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
90 77 | |
91 78 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
92 79 | |
93 80 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"mysql"</span><span class="s">)</span> <span class="s">{</span> | |
94 81 <span class="c"># Switch schemas...</span> | |
95 82 <span class="i">$SQL</span> = <span class="q">qq(USE $SchemaName)</span><span class="sc">;</span> | |
96 83 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
97 84 <span class="i">$SQLHandle</span><span class="i">->execute</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
98 85 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
99 86 | |
100 87 <span class="c"># Setup to fetch table names...</span> | |
101 88 <span class="i">$SQL</span> = <span class="q">qq(SHOW TABLES)</span><span class="sc">;</span> | |
102 89 <span class="s">}</span> | |
103 90 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> | |
104 91 <span class="i">$SQL</span> = <span class="q">qq(SELECT SEGMENT_NAME FROM DBA_SEGMENTS WHERE OWNER = '$SchemaName' AND SEGMENT_TYPE = 'TABLE' ORDER BY SEGMENT_NAME)</span><span class="sc">;</span> | |
105 92 <span class="s">}</span> | |
106 93 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(Pg|Postgres)$/i</span><span class="s">)</span> <span class="s">{</span> | |
107 94 <span class="i">$SQL</span> = <span class="q">qq(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '$SchemaName')</span><span class="sc">;</span> | |
108 95 <span class="s">}</span> | |
109 96 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
110 97 <span class="i">$SQLHandle</span><span class="i">->execute</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
111 98 | |
112 99 <span class="k">my</span><span class="s">(</span><span class="i">@RowValues</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span><span class="sc">;</span> | |
113 100 <span class="k">while</span> <span class="s">(</span><span class="i">@RowValues</span> = <span class="i">$SQLHandle</span><span class="i">->fetchrow_array</span><span class="s">)</span> <span class="s">{</span> | |
114 101 <span class="i">$TableName</span> = <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(mysql|Oracle)$/i</span><span class="s">)</span> ? <span class="k">uc</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="n">0</span>]<span class="s">)</span> <span class="co">:</span> <span class="i">$RowValues</span>[<span class="n">0</span>]<span class="sc">;</span> | |
115 102 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> <span class="s">{</span> | |
116 103 <span class="k">push</span> <span class="i">@SchemaTableNames</span><span class="cm">,</span> <span class="i">$TableName</span><span class="sc">;</span> | |
117 104 <span class="s">}</span> | |
118 105 <span class="s">}</span> | |
119 106 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
120 107 | |
121 108 <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> | |
122 109 <span class="s">}</span> | |
123 110 | |
124 111 <span class="c"># Setup describe SQL statement...</span> | |
125 <a name="DBSetupDescribeSQL-"></a> 112 <span class="k">sub </span><span class="m">DBSetupDescribeSQL</span> <span class="s">{</span> | |
126 113 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span><span class="sc">;</span> | |
127 114 <span class="k">my</span><span class="s">(</span><span class="i">$DescribeSQL</span><span class="s">)</span><span class="sc">;</span> | |
128 115 | |
129 116 <span class="i">$DBDriver</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$TableName</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$SchemaName</span> = <span class="q">""</span><span class="sc">;</span> | |
130 117 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">3</span><span class="s">)</span> <span class="s">{</span> | |
131 118 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
132 119 <span class="s">}</span> | |
133 120 <span class="k">else</span> <span class="s">{</span> | |
134 121 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
135 122 <span class="s">}</span> | |
136 123 <span class="i">$TableName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> ? <span class="i">$TableName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
137 124 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
138 125 | |
139 126 <span class="i">$DescribeSQL</span> = <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> ? <span class="s">(</span><span class="q">"DESCRIBE "</span> . <span class="q">"$SchemaName"</span> . <span class="q">".$TableName"</span><span class="s">)</span> <span class="co">:</span> <span class="q">"DESCRIBE $TableName"</span><span class="sc">;</span> | |
140 127 | |
141 128 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> | |
142 129 <span class="i">$DescribeSQL</span> = <span class="q">qq(SELECT COLUMN_NAME "Column_Name", DECODE(NULLABLE, 'N','Not Null','Y','Null') "Null", DATA_TYPE "Data_Type", DATA_LENGTH "Data_Length", DATA_PRECISION "Data_Precision" FROM DBA_TAB_COLUMNS WHERE TABLE_NAME = '$TableName')</span><span class="sc">;</span> | |
143 130 <span class="k">if</span> <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> <span class="s">{</span> | |
144 131 <span class="i">$DescribeSQL</span> .= <span class="q">qq( AND OWNER = '$SchemaName')</span><span class="sc">;</span> | |
145 132 <span class="s">}</span> | |
146 133 <span class="i">$DescribeSQL</span> .= <span class="q">qq( ORDER BY COLUMN_ID)</span><span class="sc">;</span> | |
147 134 <span class="s">}</span> | |
148 135 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(Pg|Postgres)$/i</span><span class="s">)</span> <span class="s">{</span> | |
149 136 <span class="i">$DescribeSQL</span> = <span class="q">qq(SELECT COLUMN_NAME "Column_Name", data_type "Data_Type" FROM information_schema.columns WHERE table_name ='$TableName')</span><span class="sc">;</span> | |
150 137 <span class="k">if</span> <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> <span class="s">{</span> | |
151 138 <span class="i">$DescribeSQL</span> .= <span class="q">" and table_schema = '$SchemaName'"</span><span class="sc">;</span> | |
152 139 <span class="s">}</span> | |
153 140 <span class="s">}</span> | |
154 141 | |
155 142 <span class="k">return</span> <span class="i">$DescribeSQL</span><span class="sc">;</span> | |
156 143 <span class="s">}</span> | |
157 144 | |
158 145 <span class="c"># Setup describe SQL statement...</span> | |
159 <a name="DBSetupSelectSQL-"></a> 146 <span class="k">sub </span><span class="m">DBSetupSelectSQL</span> <span class="s">{</span> | |
160 147 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span><span class="sc">;</span> | |
161 148 <span class="k">my</span><span class="s">(</span><span class="i">$SelectSQL</span><span class="s">)</span><span class="sc">;</span> | |
162 149 | |
163 150 <span class="i">$DBDriver</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$TableName</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$SchemaName</span> = <span class="q">""</span><span class="sc">;</span> | |
164 151 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">3</span><span class="s">)</span> <span class="s">{</span> | |
165 152 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
166 153 <span class="s">}</span> | |
167 154 <span class="k">else</span> <span class="s">{</span> | |
168 155 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
169 156 <span class="s">}</span> | |
170 157 <span class="i">$TableName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> ? <span class="i">$TableName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
171 158 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
172 159 | |
173 160 <span class="i">$SelectSQL</span> = <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> ? <span class="s">(</span><span class="q">"SELECT * FROM "</span> . <span class="q">"$SchemaName"</span> . <span class="q">".$TableName"</span><span class="s">)</span> <span class="co">:</span> <span class="q">"SELECT * FROM $TableName"</span><span class="sc">;</span> | |
174 161 | |
175 162 <span class="k">return</span> <span class="i">$SelectSQL</span><span class="sc">;</span> | |
176 163 <span class="s">}</span> | |
177 164 | |
178 165 <span class="c"># Prepare and execute a SQL statement and write out results into</span> | |
179 166 <span class="c"># a text file.</span> | |
180 <a name="DBSQLToTextFile-"></a> 167 <span class="k">sub </span><span class="m">DBSQLToTextFile</span> <span class="s">{</span> | |
181 168 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="cm">,</span> <span class="i">$ReplaceNullStr</span><span class="s">)</span><span class="sc">;</span> | |
182 169 <span class="k">my</span><span class="s">(</span><span class="i">$SQLHandle</span><span class="cm">,</span> <span class="i">$Status</span><span class="s">)</span><span class="sc">;</span> | |
183 170 | |
184 171 <span class="i">$Status</span> = <span class="n">1</span><span class="sc">;</span> | |
185 172 <span class="i">$ExportDataLabels</span> = <span class="n">1</span><span class="sc">;</span> | |
186 173 <span class="i">$ExportLOBs</span> = <span class="n">0</span><span class="sc">;</span> | |
187 174 <span class="i">$ReplaceNullStr</span> = <span class="q">""</span><span class="sc">;</span> | |
188 175 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">8</span><span class="s">)</span> <span class="s">{</span> | |
189 176 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="cm">,</span> <span class="i">$ReplaceNullStr</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
190 177 <span class="s">}</span> | |
191 178 <span class="k">elsif</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">7</span><span class="s">)</span> <span class="s">{</span> | |
192 179 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
193 180 <span class="s">}</span> | |
194 181 <span class="k">elsif</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">6</span><span class="s">)</span> <span class="s">{</span> | |
195 182 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
196 183 <span class="s">}</span> | |
197 184 <span class="k">else</span> <span class="s">{</span> | |
198 185 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
199 186 <span class="s">}</span> | |
200 187 | |
201 188 <span class="c"># Execute SQL statement...</span> | |
202 189 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | |
203 190 <span class="i">$SQLHandle</span><span class="i">->execute</span><span class="s">(</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | |
204 191 | |
205 192 <span class="k">my</span><span class="s">(</span><span class="i">$FieldsNum</span><span class="cm">,</span> <span class="i">@FieldNames</span><span class="cm">,</span> <span class="i">@RowValues</span><span class="cm">,</span> <span class="i">@ColNumsToExport</span><span class="cm">,</span> <span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$ColNum</span><span class="cm">,</span> <span class="i">$ColLabelsLine</span><span class="cm">,</span> <span class="i">@Values</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$ValuesLine</span><span class="s">)</span><span class="sc">;</span> | |
206 193 | |
207 194 <span class="i">$Status</span> = <span class="n">0</span><span class="sc">;</span> | |
208 195 <span class="c"># Figure out which column numbers need to be exported...</span> | |
209 196 <span class="i">$FieldsNum</span> = <span class="i">$SQLHandle</span>->{<span class="w">NUM_OF_FIELDS</span>}<span class="sc">;</span> | |
210 197 <span class="i">@FieldNames</span> = <span class="i">@</span>{<span class="i">$SQLHandle</span>->{<span class="w">NAME</span>}}<span class="sc">;</span> | |
211 198 <span class="i">@ColNumsToExport</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
212 199 <span class="k">if</span> <span class="s">(</span><span class="i">$ExportLOBs</span><span class="s">)</span> <span class="s">{</span> | |
213 200 <span class="i">@ColNumsToExport</span> = <span class="s">(</span><span class="n">0</span> .. <span class="i">$#FieldNames</span><span class="s">)</span><span class="sc">;</span> | |
214 201 <span class="s">}</span> | |
215 202 <span class="k">else</span> <span class="s">{</span> | |
216 203 <span class="k">my</span><span class="s">(</span><span class="i">@FieldTypes</span><span class="cm">,</span> <span class="i">@FieldTypeNames</span><span class="cm">,</span> <span class="i">$Type</span><span class="cm">,</span> <span class="i">$TypeName</span><span class="s">)</span><span class="sc">;</span> | |
217 204 <span class="i">@FieldTypes</span> = <span class="i">@</span>{<span class="i">$SQLHandle</span>->{<span class="w">TYPE</span>}}<span class="sc">;</span> | |
218 205 <span class="i">@FieldTypeNames</span> = <span class="k">map</span> <span class="s">{</span> <span class="k">scalar</span> <span class="i">$DBHandle</span><span class="i">->type_info</span><span class="s">(</span><span class="i">$_</span><span class="s">)</span>->{<span class="w">TYPE_NAME</span>} <span class="s">}</span> <span class="i">@FieldTypes</span><span class="sc">;</span> | |
219 206 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#FieldNames</span><span class="s">)</span> <span class="s">{</span> | |
220 207 <span class="k">if</span> <span class="s">(</span><span class="i">$FieldTypeNames</span>[<span class="i">$ColNum</span>] !~ <span class="q">/lob|bytea/i</span> <span class="s">)</span> <span class="s">{</span> | |
221 208 <span class="k">push</span> <span class="i">@ColNumsToExport</span><span class="cm">,</span> <span class="i">$ColNum</span><span class="sc">;</span> | |
222 209 <span class="s">}</span> | |
223 210 <span class="s">}</span> | |
224 211 <span class="s">}</span> | |
225 212 | |
226 213 <span class="k">if</span> <span class="s">(</span><span class="i">$ExportDataLabels</span><span class="s">)</span> <span class="s">{</span> | |
227 214 <span class="c"># Print out column labels...</span> | |
228 215 <span class="i">@ColLabels</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
229 216 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="i">@ColNumsToExport</span><span class="s">)</span> <span class="s">{</span> | |
230 217 <span class="k">push</span> <span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$FieldNames</span>[<span class="i">$ColNum</span>]<span class="sc">;</span> | |
231 218 <span class="s">}</span> | |
232 219 <span class="i">$ColLabelsLine</span> = <span class="i">JoinWords</span><span class="s">(</span>\<span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span><span class="sc">;</span> | |
233 220 <span class="k">print</span> <span class="i">$TextFile</span> <span class="q">"$ColLabelsLine\n"</span><span class="sc">;</span> | |
234 221 <span class="s">}</span> | |
235 222 <span class="c"># Print out row values...</span> | |
236 223 <span class="k">while</span> <span class="s">(</span><span class="i">@RowValues</span> = <span class="i">$SQLHandle</span><span class="i">->fetchrow_array</span><span class="s">)</span> <span class="s">{</span> | |
237 224 <span class="i">@Values</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
238 225 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="i">@ColNumsToExport</span><span class="s">)</span> <span class="s">{</span> | |
239 226 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="s">)</span> && <span class="k">length</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
240 227 <span class="i">$Value</span> = <span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="sc">;</span> | |
241 228 <span class="s">}</span> | |
242 229 <span class="k">else</span> <span class="s">{</span> | |
243 230 <span class="i">$Value</span> = <span class="i">$ReplaceNullStr</span> ? <span class="i">$ReplaceNullStr</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> | |
244 231 <span class="s">}</span> | |
245 232 <span class="k">push</span> <span class="i">@Values</span><span class="cm">,</span> <span class="i">$Value</span><span class="sc">;</span> | |
246 233 <span class="s">}</span> | |
247 234 <span class="i">$ValuesLine</span> = <span class="i">JoinWords</span><span class="s">(</span>\<span class="i">@Values</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span><span class="sc">;</span> | |
248 235 <span class="k">print</span> <span class="i">$TextFile</span> <span class="q">"$ValuesLine\n"</span><span class="sc">;</span> | |
249 236 <span class="s">}</span> | |
250 237 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | |
251 238 <span class="i">$Status</span> = <span class="n">0</span><span class="sc">;</span> | |
252 239 | |
253 240 <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | |
254 241 <span class="s">}</span> | |
255 242 | |
256 <a name="EOF-"></a></pre> | |
257 <p> </p> | |
258 <br /> | |
259 <center> | |
260 <img src="../../../images/h2o2.png"> | |
261 </center> | |
262 </body> | |
263 </html> |