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itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/awSQL/category/classes"><span itemprop="name">Classes</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Structure</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Structure</h1></header>
<p>Defines a new table structure for managing columns efficiently.</p>
<hr>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="methods">Methods<a href="#methods" class="hash-link" aria-label="Direct link to Methods" title="Direct link to Methods"></a></h2>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="constructor">constructor()<a href="#constructor" class="hash-link" aria-label="Direct link to constructor()" title="Direct link to constructor()"></a></h3>
<p>→ (<code>tableDescription</code>? = <strong>Array</strong>&lt;<a href="/awSQL/typedefs/column-structure">ColumnStructure</a>&gt;) → <code>this</code></p>
<p>Create a new <code>Structure</code> instance.</p>
<p><strong>Parameters</strong></p>
<table><thead><tr><th>Parameter</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><code>tableDescription</code> <strong>optional</strong></td><td><strong>Array</strong>&lt;<a href="/awSQL/typedefs/column-structure">ColumnStructure</a>&gt;</td><td>A list of column structure objects defining table columns.<br><br>A table description can be retrieved using the <a href="#get">get()</a> method and later reloaded by passing it to the <code>Structure</code> constructor.</td></tr></tbody></table>
<p><strong>Returns</strong></p>
<p><code>this</code> - The instance of <code>Structure</code>.</p>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="get">get()<a href="#get" class="hash-link" aria-label="Direct link to get()" title="Direct link to get()"></a></h3>
<p>→ () → <strong>Array</strong>&lt;<a href="/awSQL/typedefs/column-structure">ColumnStructure</a>&gt;</p>
<p>Retrieves an array of all defined columns in the <code>Structure</code> as <a href="/awSQL/typedefs/column-structure">ColumnStructure</a> objects.</p>
<p><strong>Returns</strong></p>
<p><strong>Array</strong>&lt;<a href="/awSQL/typedefs/column-structure">ColumnStructure</a>&gt; - A list of defined columns.</p>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="drop">drop()<a href="#drop" class="hash-link" aria-label="Direct link to drop()" title="Direct link to drop()"></a></h3>
<p>→ (<code>name</code> = <strong>String</strong>) → <code>this</code></p>
<p>Removes a column from the structure.</p>
<p><strong>Parameters</strong></p>
<table><thead><tr><th>Parameter</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><code>name</code></td><td><strong>String</strong></td><td>The column name to remove.</td></tr></tbody></table>
<p><strong>Returns</strong></p>
<p><code>this</code></p>
<hr>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="column-methods">Column Methods<a href="#column-methods" class="hash-link" aria-label="Direct link to Column Methods" title="Direct link to Column Methods"></a></h2>
<p>Each of these methods adds a column of the specified type to the structure.</p>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="string-based-columns">String-Based Columns<a href="#string-based-columns" class="hash-link" aria-label="Direct link to String-Based Columns" title="Direct link to String-Based Columns"></a></h3>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>char(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>0-255, default 1</em>)</td><td>Adds a fixed-length character column.</td></tr><tr><td>varchar(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>0-255, default 1</em>)</td><td>Adds a variable-length character column.</td></tr><tr><td>tinytext(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>tinytext</code> column.</td></tr><tr><td>text(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>text</code> column.</td></tr><tr><td>mediumtext(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>mediumtext</code> column.</td></tr><tr><td>longtext(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>longtext</code> column.</td></tr></tbody></table>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="binary-data-columns">Binary Data Columns<a href="#binary-data-columns" class="hash-link" aria-label="Direct link to Binary Data Columns" title="Direct link to Binary Data Columns"></a></h3>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>binary(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1+, default 1</em>)</td><td>Adds a binary column.</td></tr><tr><td>varbinary(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>0+, default 1</em>)</td><td>Adds a variable-length binary column.</td></tr><tr><td>tinyblob(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>tinyblob</code> column.</td></tr><tr><td>blob(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>0-65535, default 65535</em>)</td><td>Adds a <code>blob</code> column.</td></tr><tr><td>longblobl(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>longblob</code> column.</td></tr></tbody></table>
<hr>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>enum(<code>name</code>: <strong>String</strong>, <code>vals</code>: <strong>Array</strong>&lt;<strong>String</strong>&gt;, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>vals</code>: <em>Array of allowed values</em></td><td>Adds an <code>enum</code> column with predefined values.</td></tr><tr><td>set(<code>name</code>: <strong>String</strong>, <code>vals</code>: <strong>Array</strong>&lt;<strong>String</strong>&gt;, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>vals</code>: <em>Array of allowed values</em></td><td>Adds a <code>set</code> column with multiple selectable values.</td></tr></tbody></table>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="numeric-columns">Numeric Columns<a href="#numeric-columns" class="hash-link" aria-label="Direct link to Numeric Columns" title="Direct link to Numeric Columns"></a></h3>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>bit(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-64, default 1</em>)</td><td>Adds a <code>bit</code> column.</td></tr><tr><td>tinyint(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-255, default 255</em>)</td><td>Adds a <code>tinyint</code> column.</td></tr><tr><td>bool(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Alias for <code>tinyint(1)</code>.</td></tr><tr><td>smallint(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-255, default 255</em>)</td><td>Adds a <code>smallint</code> column.</td></tr><tr><td>mediumint(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-255, default 255</em>)</td><td>Adds a <code>mediumint</code> column.</td></tr><tr><td>int(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-255, default 255</em>)</td><td>Adds an <code>int</code> column.</td></tr><tr><td>bigint(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1-255, default 255</em>)</td><td>Adds a <code>bigint</code> column.</td></tr></tbody></table>
<hr>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="floating-point--decimal-columns">Floating Point &amp; Decimal Columns<a href="#floating-point--decimal-columns" class="hash-link" aria-label="Direct link to Floating Point &amp; Decimal Columns" title="Direct link to Floating Point &amp; Decimal Columns"></a></h3>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>float(<code>name</code>: <strong>String</strong>, <code>p</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>p</code>: (<em>1-53, default 25</em>)</td><td>Adds a <code>float</code> column.</td></tr><tr><td>double(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>d</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1+, default 16</em>)<br><code>d</code>: (<em>1+, default 8</em>)</td><td>Adds a <code>double</code> dolumn.</td></tr><tr><td>decimal(<code>name</code>: <strong>String</strong>, <code>size</code>?: <strong>Number</strong>, <code>d</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>size</code>: (<em>1+, default 16</em>)<br><code>d</code>: (<em>1+, default 8</em>)</td><td>Adds a <code>decimal</code> column.</td></tr></tbody></table>
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<h3 class="anchor anchorWithStickyNavbar_LWe7" id="date--time-columns">Date &amp; Time Columns<a href="#date--time-columns" class="hash-link" aria-label="Direct link to Date &amp; Time Columns" title="Direct link to Date &amp; Time Columns"></a></h3>
<table><thead><tr><th>Method</th><th>Parameters</th><th>Description</th></tr></thead><tbody><tr><td>date(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>date</code> column.</td></tr><tr><td>datetime(<code>name</code>: <strong>String</strong>, <code>fsp</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>fsp</code>: (<em>0-6, default 0</em>)</td><td>Adds a <code>datetime</code> column.</td></tr><tr><td>timestamp(<code>name</code>: <strong>String</strong>, <code>fsp</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>fsp</code>: (<em>0-6, default 0</em>)</td><td>Adds a <code>timestamp</code> column.</td></tr><tr><td>time(<code>name</code>: <strong>String</strong>, <code>fsp</code>?: <strong>Number</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td><code>fsp</code>: (<em>0-6, default 0</em>)</td><td>Adds a <code>time</code> column.</td></tr><tr><td>year(<code>name</code>: <strong>String</strong>, <code>options</code>?: <a href="/awSQL/typedefs/constraint-options">ConstraintOptions</a>)</td><td>-</td><td>Adds a <code>year</code> column.</td></tr></tbody></table>
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