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108 <p> |
108 <p> |
109 If executed on TTY, it reads data from the default location: <code>/etc/fstab</code>. |
109 If executed on TTY, it reads data from the default location: <code>/etc/fstab</code>. |
110 If executed with STDIN attached to a file or another command (in a pipe), it reads data from this stream. |
110 If executed with STDIN attached to a file or another command (in a pipe), it reads data from this stream. |
111 </p> |
111 </p> |
112 |
112 |
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113 <h3>relpipe-in-xml</h3> |
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114 |
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115 <p> |
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116 A tool that reads XML data in the format generated by <code>relpipe-out-xml</code> |
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117 and converts it back to the relational format. |
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118 Can be used together with XSLT procesor XQuery engine or other XML generator in two basic scenarios: |
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119 </p> |
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120 |
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121 <ul> |
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122 <li>as an input filter: to convert other formats to relational data</li> |
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123 <li>as a transformation: in pipeline: <code>relpipe-out-xml | some-xml-processor | relpipe-in-xml</code></li> |
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124 </ul> |
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125 |
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126 <p> |
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127 XQuery is very powerful language that can do various transformations, filtering and even JOIN and UNION operations. |
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128 So its power is comparable to relational databases. |
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129 In future <m:name/> releases, there will be also an SQL transformation tool, where these operations will be defined in classic SQL syntax. |
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130 </p> |
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131 |
113 <h3>relpipe-out-tabular</h3> |
132 <h3>relpipe-out-tabular</h3> |
114 |
133 |
115 <p> |
134 <p> |
116 A tool that formats relational data as tables with unicode borders and ANSI colors. |
135 A tool that formats relational data as tables with unicode borders and ANSI colors. |
117 Good for viewing relational data in a terminal or redirecting such view to a file or clipboard (to be pasted anywhere, where fixed-width font is used). |
136 Good for viewing relational data in a terminal or redirecting such view to a file or clipboard (to be pasted anywhere, where fixed-width font is used). |