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校验 func.sgml:
- 校验到第22个 sig_cn_org=4a340131171b89652f2fbfa9d964ab8a
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postgresql/doc/src/sgml/func.sgml

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@@ -3225,8 +3225,8 @@ ________________________________________________________-->
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<returnvalue>numeric</returnvalue>
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</para>
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<para>
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Rounds <parameter>v</parameter> to <parameter>s</parameter> decimal
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places. Ties are broken by rounding away from zero.
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<parameter>v</parameter> 四舍五入到 <parameter>s</parameter> 位小数。
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当出现平局时,通过远离零的方向进行四舍五入来解决。
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</para>
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<para>
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<literal>round(42.4382, 2)</literal>
@@ -5576,7 +5576,7 @@ ________________________________________________________-->
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<secondary>前缀测试</secondary>
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</indexterm>
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<type>text</type> <literal>^@</literal> <type>text</type>
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<returnvalue>布尔值</returnvalue>
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<returnvalue>boolean</returnvalue>
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</para>
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<para>
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如果第一个字符串以第二个字符串开头,则返回true(等同于<function>starts_with()</function>函数)。
@@ -6536,11 +6536,8 @@ ________________________________________________________-->
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<returnvalue>setof text[]</returnvalue>
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</para>
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<para>
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Returns substrings within the first match of the POSIX regular
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expression <parameter>pattern</parameter> to
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the <parameter>string</parameter>, or substrings within all
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such matches if the <literal>g</literal> flag is used;
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see <xref linkend="functions-posix-regexp"/>.
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返回POSIX正则表达式 <parameter>pattern</parameter> 在 <parameter>string</parameter>中第一个匹配项内的子字符串, 或者如果使用 <literal>g</literal> 标志,则返回所有此类匹配项内的子字符串;
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参见 <xref linkend="functions-posix-regexp"/>。
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</para>
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<para>
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<literal>regexp_matches('foobarbequebaz', 'ba.', 'g')</literal>

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