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From: Andrzej Zawadzki <zawadaa@gmail.com>
To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Re: Adding Column on Huge Table
Date: Tue, 19 Mar 2019 21:53:16 +0100
Message-ID: <5b26ed21-a7b5-6c1b-af10-10df4d44a4f7@gmail.com> (raw)
In-Reply-To: <HK0PR03MB2977B9460C4CC7D0383D05BDAD400@HK0PR03MB2977.apcprd03.prod.outlook.com>
References: <HK0PR03MB2977B9460C4CC7D0383D05BDAD400@HK0PR03MB2977.apcprd03.prod.outlook.com>

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    <div class="moz-cite-prefix">On 19.03.2019 16:56, Moin Akther wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:HK0PR03MB2977B9460C4CC7D0383D05BDAD400@HK0PR03MB2977.apcprd03.prod.outlook.com">
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        Dear Experts,</div>
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        <br>
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      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
        236);">
        We want to add a column on table size of 1.5TB, we have to
        perform this activity with minimal downtime. </div>
      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
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        <br>
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      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
        236);">
        What are the best practises to add a column on huge table ?</div>
      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
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        <br>
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      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
        236);">
        How much time alter statement will take to add column ?</div>
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        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
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        <br>
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      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
        236);">
        Any alternate solution other than alter statement to add column
        ?</div>
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        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
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        <br>
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      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
        236);">
        Will adding a new column on a huge table generate huge WAL files
        ?</div>
      <div style="font-family: &quot;Segoe UI&quot;, &quot;Helvetica
        Neue&quot;, sans-serif; font-size: 11pt; color: rgb(38, 114,
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        <br>
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    <p>No offense, but don't you have any test environment?</p>
    <p>Try that or maybe you have so show times.</p>
    <p><br>
    </p>
    <p>-- <br>
    </p>
    <p>Andrzej Zawadzki<br>
    </p>
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