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565 lines
17 KiB
HTML
565 lines
17 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta id="repository-name" content="github.com/crystal-lang/crystal-db">
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<link href="../css/style.css" rel="stylesheet" type="text/css" />
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<script type="text/javascript" src="../js/doc.js"></script>
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<title>DB::Statement - github.com/crystal-lang/crystal-db</title>
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</head>
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<body>
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<div id="types-list">
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<div id="search-box">
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<input type="search" id="search-input" placeholder="Search...">
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<ul>
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<li><a href="../index.html">README</a></li>
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<ul>
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<li class="parent open current" data-id="github.com/crystal-lang/crystal-db/DB" data-name="db">
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<a href="../DB.html">DB</a>
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<ul>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Any" data-name="db::any">
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<a href="../DB/Any.html">Any</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/BeginTransaction" data-name="db::begintransaction">
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<a href="../DB/BeginTransaction.html">BeginTransaction</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Connection" data-name="db::connection">
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<a href="../DB/Connection.html">Connection</a>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionContext" data-name="db::connectioncontext">
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<a href="../DB/ConnectionContext.html">ConnectionContext</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionLost" data-name="db::connectionlost">
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<a href="../DB/ConnectionLost.html">ConnectionLost</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionRefused" data-name="db::connectionrefused">
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<a href="../DB/ConnectionRefused.html">ConnectionRefused</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Database" data-name="db::database">
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<a href="../DB/Database.html">Database</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Disposable" data-name="db::disposable">
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<a href="../DB/Disposable.html">Disposable</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Driver" data-name="db::driver">
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<a href="../DB/Driver.html">Driver</a>
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</li>
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<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/DriverSpecs" data-name="db::driverspecs(dbanytype)">
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<a href="../DB/DriverSpecs.html">DriverSpecs</a>
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<ul>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/DriverSpecs/ColumnDef" data-name="db::driverspecs::columndef">
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<a href="../DB/DriverSpecs/ColumnDef.html">ColumnDef</a>
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</li>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Error" data-name="db::error">
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<a href="../DB/Error.html">Error</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ExecResult" data-name="db::execresult">
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<a href="../DB/ExecResult.html">ExecResult</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Mappable" data-name="db::mappable">
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<a href="../DB/Mappable.html">Mappable</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/MappingException" data-name="db::mappingexception">
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<a href="../DB/MappingException.html">MappingException</a>
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</li>
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<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/Pool" data-name="db::pool(t)">
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<a href="../DB/Pool.html">Pool</a>
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<ul>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Pool/TimeoutHelper" data-name="db::pool::timeouthelper">
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<a href="../DB/Pool/TimeoutHelper.html">TimeoutHelper</a>
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</li>
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</ul>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolPreparedStatement" data-name="db::poolpreparedstatement">
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<a href="../DB/PoolPreparedStatement.html">PoolPreparedStatement</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolRetryAttemptsExceeded" data-name="db::poolretryattemptsexceeded">
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<a href="../DB/PoolRetryAttemptsExceeded.html">PoolRetryAttemptsExceeded</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolStatement" data-name="db::poolstatement">
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<a href="../DB/PoolStatement.html">PoolStatement</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolTimeout" data-name="db::pooltimeout">
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<a href="../DB/PoolTimeout.html">PoolTimeout</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolUnpreparedStatement" data-name="db::poolunpreparedstatement">
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<a href="../DB/PoolUnpreparedStatement.html">PoolUnpreparedStatement</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/QueryMethods" data-name="db::querymethods">
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<a href="../DB/QueryMethods.html">QueryMethods</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ResultSet" data-name="db::resultset">
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<a href="../DB/ResultSet.html">ResultSet</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Rollback" data-name="db::rollback">
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<a href="../DB/Rollback.html">Rollback</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SavePointTransaction" data-name="db::savepointtransaction">
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<a href="../DB/SavePointTransaction.html">SavePointTransaction</a>
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</li>
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<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods" data-name="db::sessionmethods(session, stmt)">
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<a href="../DB/SessionMethods.html">SessionMethods</a>
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<ul>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods/PreparedQuery" data-name="db::sessionmethods::preparedquery(session, stmt)">
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<a href="../DB/SessionMethods/PreparedQuery.html">PreparedQuery</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods/UnpreparedQuery" data-name="db::sessionmethods::unpreparedquery(session, stmt)">
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<a href="../DB/SessionMethods/UnpreparedQuery.html">UnpreparedQuery</a>
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</li>
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</ul>
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</li>
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<li class=" current" data-id="github.com/crystal-lang/crystal-db/DB/Statement" data-name="db::statement">
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<a href="../DB/Statement.html">Statement</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/StatementMethods" data-name="db::statementmethods">
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<a href="../DB/StatementMethods.html">StatementMethods</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/StringKeyCache" data-name="db::stringkeycache(t)">
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<a href="../DB/StringKeyCache.html">StringKeyCache</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/TopLevelTransaction" data-name="db::topleveltransaction">
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<a href="../DB/TopLevelTransaction.html">TopLevelTransaction</a>
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</li>
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<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Transaction" data-name="db::transaction">
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<a href="../DB/Transaction.html">Transaction</a>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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<div id="main-content">
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<h1 class="type-name">
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<span class="kind">abstract class</span> DB::Statement
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</h1>
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<ul class="superclass-hierarchy"><li class="superclass"><a href="../DB/Statement.html">DB::Statement</a></li><li class="superclass">Reference</li><li class="superclass">Object</li></ul>
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<h2>Overview</h2>
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<p>Represents a query in a <code><a href="../DB/Connection.html">Connection</a></code>.
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It should be created by <code><a href="../DB/QueryMethods.html">QueryMethods</a></code>.</p>
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<h3>Note to implementors</h3>
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<ol><li>Subclass <code>Statements</code></li><li><code>Statements</code> are created from a custom driver <code>Connection#prepare</code> method.</li><li><code>#perform_query</code> executes a query that is expected to return a <code><a href="../DB/ResultSet.html">ResultSet</a></code></li><li><code>#perform_exec</code> executes a query that is expected to return an <code><a href="../DB/ExecResult.html">ExecResult</a></code></li><li><code>#do_close</code> is called to release the statement resources.</li></ol>
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<h2>Included Modules</h2>
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<ul class="other-types-list">
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<li class="other-type"><a href="../DB/StatementMethods.html">DB::StatementMethods</a></li>
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</ul>
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<h2>Defined in:</h2>
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<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L52" target="_blank">db/statement.cr</a>
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<br/>
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<h2>Class Method Summary</h2>
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<ul class="list-summary">
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<li class="entry-summary">
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<a href="#new%28connection%3AConnection%29-class-method" class="signature"><strong>.new</strong>(connection : Connection)</a>
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</li>
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</ul>
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<h2>Instance Method Summary</h2>
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<ul class="list-summary">
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<li class="entry-summary">
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<a href="#exec%28args%3AArray%29-instance-method" class="signature"><strong>#exec</strong>(args : Array)</a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#exec-instance-method" class="signature"><strong>#exec</strong></a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#exec%28%2Aargs%29-instance-method" class="signature"><strong>#exec</strong>(*args)</a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#query%28args%3AArray%29-instance-method" class="signature"><strong>#query</strong>(args : Array)</a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#query-instance-method" class="signature"><strong>#query</strong></a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#query%28%2Aargs%29-instance-method" class="signature"><strong>#query</strong>(*args)</a>
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<div class="summary"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
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</li>
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<li class="entry-summary">
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<a href="#release_connection-instance-method" class="signature"><strong>#release_connection</strong></a>
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</li>
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</ul>
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<div class="methods-inherited">
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<h3>Instance methods inherited from module <code><a href="../DB/StatementMethods.html">DB::StatementMethods</a></code></h3>
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<a href="../DB/StatementMethods.html#exec%28args%3AArray%29%3AExecResult-instance-method" class="tooltip">
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<span>exec(args : Array) : ExecResult<br/>exec : ExecResult<br/>exec(*args) : ExecResult</span>
|
||
|
|
exec</a>,
|
||
|
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|
||
|
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|
||
|
|
<a href="../DB/StatementMethods.html#query%28%2Aargs%2C%26block%29-instance-method" class="tooltip">
|
||
|
|
<span>query(*args, &block)<br/>query(args : Array) : ResultSet<br/>query : ResultSet<br/>query(*args) : ResultSet</span>
|
||
|
|
query</a>,
|
||
|
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|
||
|
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|
||
|
|
<a href="../DB/StatementMethods.html#scalar%28%2Aargs%29-instance-method" class="tooltip">
|
||
|
|
<span>scalar(*args)</span>
|
||
|
|
scalar</a>
|
||
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|
||
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||
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||
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|
||
|
|
<h3>Instance methods inherited from module <code><a href="../DB/Disposable.html">DB::Disposable</a></code></h3>
|
||
|
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|
||
|
|
|
||
|
|
<a href="../DB/Disposable.html#close-instance-method" class="tooltip">
|
||
|
|
<span>close</span>
|
||
|
|
close</a>,
|
||
|
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|
||
|
|
|
||
|
|
<a href="../DB/Disposable.html#closed%3F-instance-method" class="tooltip">
|
||
|
|
<span>closed?</span>
|
||
|
|
closed?</a>
|
||
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|
||
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||
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||
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|
||
|
|
</div>
|
||
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|
||
|
|
|
||
|
|
<h2>Class Method Detail</h2>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="new(connection:Connection)-class-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def self.<strong>new</strong>(connection : <a href="../DB/Connection.html">Connection</a>)
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#new%28connection%3AConnection%29-class-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L58" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h2>Instance Method Detail</h2>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="exec(args:Array)-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>exec</strong>(args : Array)
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#exec%28args%3AArray%29-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L71" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="exec-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>exec</strong>
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#exec-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L66" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="exec(*args)-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>exec</strong>(*args)
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#exec%28%2Aargs%29-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#exec%28query%2C%2Aargs%29-instance-method">QueryMethods#exec</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L76" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="query(args:Array)-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>query</strong>(args : Array)
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#query%28args%3AArray%29-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L87" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="query-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>query</strong>
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#query-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L82" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="query(*args)-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>query</strong>(*args)
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#query%28%2Aargs%29-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="doc"><p>See <code><a href="../DB/QueryMethods.html#query%28query%2C%2Aargs%29-instance-method">QueryMethods#query</a></code></p></div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L92" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div class="entry-detail" id="release_connection-instance-method">
|
||
|
|
<div class="signature">
|
||
|
|
|
||
|
|
def <strong>release_connection</strong>
|
||
|
|
|
||
|
|
<a class="method-permalink" href="#release_connection-instance-method">#</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<br/>
|
||
|
|
<div>
|
||
|
|
|
||
|
|
[<a href="https://github.com/crystal-lang/crystal-db/blob/912113d7fb377874704fc480d2aa2c1dc386e1fe/src/db/statement.cr#L61" target="_blank">View source</a>]
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|