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< h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L1" title = "View Source" class = "icon-action" rel = "help" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
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< span translate = "no" > Plausible.Stats.SQL.Fragments< / span >
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< small class = "app-vsn" translate = "no" > (Plausible v0.0.1)< / small >
< / h1 >
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< section id = "moduledoc" >
< p > Various macros and common SQL fragments used in Stats code.< / p >
< / section >
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< section id = "summary" class = "details-list" >
< h1 class = "section-heading" >
< a class = "hover-link" href = "#summary" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< / a >
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< span class = "text" > Summary< / span >
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< / h1 >
< div class = "summary-functions summary" >
< h2 >
< a href = "#functions" > Functions< / a >
< / h2 >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#bounce_rate/0" translate = "no" > bounce_rate()< / a >
< / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#coalesce_string/2" translate = "no" > coalesce_string(fieldA, fieldB)< / a >
< / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#get_by_key/3" translate = "no" > get_by_key(table, meta_column, key)< / a >
< / div >
< div class = "summary-synopsis" > < p > Returns value of a key (usually property) under < code class = "inline" > meta.value< / code > array or similar.< / p > < / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#has_key/3" translate = "no" > has_key(table, meta_column, key)< / a >
< / div >
< div class = "summary-synopsis" > < p > Returns whether a key (usually property) exists under < code class = "inline" > meta.key< / code > array or similar.< / p > < / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#meta_key_column/1" translate = "no" > meta_key_column(atom)< / a >
< / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#meta_value_column/1" translate = "no" > meta_value_column(atom)< / a >
< / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#sample_percent/0" translate = "no" > sample_percent()< / a >
< / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#select_join_fields/4" translate = "no" > select_join_fields(q, query, list, table_name)< / a >
< / div >
< div class = "summary-synopsis" > < p > Macro that helps join two Ecto queries by selecting fields from either one< / p > < / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#select_merge_as/3" translate = "no" > select_merge_as(q, binding, map_literal)< / a >
< / div >
< div class = "summary-synopsis" > < p > Convenience Ecto macro for wrapping select_merge where each value gets in turn passed to selected_as.< / p > < / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#to_timezone/2" translate = "no" > to_timezone(date, timezone)< / a >
< / div >
< div class = "summary-synopsis" > < p > Converts time or date and time to the specified timezone.< / p > < / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#total/0" translate = "no" > total()< / a >
< / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#uniq/1" translate = "no" > uniq(user_id)< / a >
< / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#visit_duration/0" translate = "no" > visit_duration()< / a >
< / div >
< / div >
< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#weekstart_not_before/2" translate = "no" > weekstart_not_before(date, not_before)< / a >
< / div >
< div class = "summary-synopsis" > < p > Returns the weekstart for < code class = "inline" > date< / code > . If the weekstart is before the < code class = "inline" > not_before< / code >
boundary, < code class = "inline" > not_before< / code > is returned.< / p > < / div >
< / div >
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< div class = "summary-row" >
< div class = "summary-signature" >
< a href = "#wrap_alias/2" translate = "no" > wrap_alias(binding, map_literal)< / a >
< / div >
< div class = "summary-synopsis" > < p > Convenience Ecto macro for wrapping a map passed to select_merge_as such that each
expression gets wrapped in dynamic and set as selected_as.< / p > < / div >
< / div >
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< / div >
< / section >
< section id = "functions" class = "details-list" >
< h1 class = "section-heading" >
< a class = "hover-link" href = "#functions" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
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< / a >
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< span class = "text" > Functions< / span >
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< / h1 >
< div class = "functions-list" >
< section class = "detail" id = "bounce_rate/0" >
< div class = "detail-header" >
< a href = "#bounce_rate/0" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > bounce_rate()< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L31" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
< / section >
< / section >
< section class = "detail" id = "coalesce_string/2" >
< div class = "detail-header" >
< a href = "#coalesce_string/2" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > coalesce_string(fieldA, fieldB)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L43" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
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< / section >
< / section >
< section class = "detail" id = "get_by_key/3" >
< div class = "detail-header" >
< a href = "#get_by_key/3" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > get_by_key(table, meta_column, key)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L129" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
< p > Returns value of a key (usually property) under < code class = "inline" > meta.value< / code > array or similar.< / p > < p > This macro is used for operating on custom properties.
Callsites should also check whether key exists first in SQL via < code class = "inline" > has_key< / code > macro.< / p > < h2 id = "get_by_key/3-examples" class = "section-heading" >
< a href = "#get_by_key/3-examples" class = "hover-link" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< / a >
< span class = "text" > Examples< / span >
< / h2 >
< p > < code class = "inline" > get_by_key(e, :meta, " some_property_name" )< / code > expands to SQL < code class = "inline" > meta.value[indexOf(meta.key, " some_property" )]< / code > < / p >
< / section >
< / section >
< section class = "detail" id = "has_key/3" >
< div class = "detail-header" >
< a href = "#has_key/3" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > has_key(table, meta_column, key)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L109" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
< p > Returns whether a key (usually property) exists under < code class = "inline" > meta.key< / code > array or similar.< / p > < p > This macro is used for operating on custom properties.< / p > < h2 id = "has_key/3-examples" class = "section-heading" >
< a href = "#has_key/3-examples" class = "hover-link" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< / a >
< span class = "text" > Examples< / span >
< / h2 >
< p > < code class = "inline" > has_key(e, :meta, " some_property_name" )< / code > expands to SQL < code class = "inline" > has(meta.key, " some_property_name" )< / code > < / p >
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< / section >
< / section >
< section class = "detail" id = "meta_key_column/1" >
< div class = "detail-header" >
< a href = "#meta_key_column/1" class = "detail-link" title = "Link to this function" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this function< / span >
< / a >
< h1 class = "signature" translate = "no" > meta_key_column(atom)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L140" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< / div >
< section class = "docstring" >
< / section >
< / section >
< section class = "detail" id = "meta_value_column/1" >
< div class = "detail-header" >
< a href = "#meta_value_column/1" class = "detail-link" title = "Link to this function" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this function< / span >
< / a >
< h1 class = "signature" translate = "no" > meta_value_column(atom)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L143" class = "icon-action" rel = "help" title = "View Source" >
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< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< / div >
< section class = "docstring" >
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< / section >
< / section >
< section class = "detail" id = "sample_percent/0" >
< div class = "detail-header" >
< a href = "#sample_percent/0" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > sample_percent()< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L25" class = "icon-action" rel = "help" title = "View Source" >
2023-07-12 11:28:07 +03:00
< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
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< / section >
< / section >
< section class = "detail" id = "select_join_fields/4" >
< div class = "detail-header" >
< a href = "#select_join_fields/4" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > select_join_fields(q, query, list, table_name)< / h1 >
< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L185" class = "icon-action" rel = "help" title = "View Source" >
< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
< / a >
< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
< p > Macro that helps join two Ecto queries by selecting fields from either one< / p >
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< / section >
< / section >
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< section class = "detail" id = "select_merge_as/3" >
< div class = "detail-header" >
< a href = "#select_merge_as/3" class = "detail-link" title = "Link to this macro" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
< span class = "sr-only" > Link to this macro< / span >
< / a >
< h1 class = "signature" translate = "no" > select_merge_as(q, binding, map_literal)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L176" class = "icon-action" rel = "help" title = "View Source" >
2024-07-03 16:33:03 +03:00
< i class = "ri-code-s-slash-line" aria-hidden = "true" > < / i >
< span class = "sr-only" > View Source< / span >
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< span class = "note" > (macro)< / span >
< / div >
< section class = "docstring" >
< p > Convenience Ecto macro for wrapping select_merge where each value gets in turn passed to selected_as.< / p > < h3 id = "select_merge_as/3-examples" class = "section-heading" >
< a href = "#select_merge_as/3-examples" class = "hover-link" >
< i class = "ri-link-m" aria-hidden = "true" > < / i >
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< span class = "text" > Examples< / span >
< / h3 >
< p > iex> select_merge_as(q, [t], %{ foo: t.column }) |> expand_macro_once
" select_merge(q, [], ^wrap_alias([t], %{foo: t.column}))" < / p >
< / section >
< / section >
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< section class = "detail" id = "to_timezone/2" >
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< h1 class = "signature" translate = "no" > to_timezone(date, timezone)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L54" class = "icon-action" rel = "help" title = "View Source" >
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< p > Converts time or date and time to the specified timezone.< / p > < p > Reference: < a href = "https://clickhouse.com/docs/en/sql-reference/functions/date-time-functions/#totimezone" > https://clickhouse.com/docs/en/sql-reference/functions/date-time-functions/#totimezone< / a > < / p >
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< h1 class = "signature" translate = "no" > total()< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L19" class = "icon-action" rel = "help" title = "View Source" >
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< h1 class = "signature" translate = "no" > uniq(user_id)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L13" class = "icon-action" rel = "help" title = "View Source" >
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< h1 class = "signature" translate = "no" > visit_duration()< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L37" class = "icon-action" rel = "help" title = "View Source" >
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< h1 class = "signature" translate = "no" > weekstart_not_before(date, not_before)< / h1 >
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< a href = "https://github.com/plausible/analytics/blob/main/lib/plausible/stats/sql/fragments.ex#L88" class = "icon-action" rel = "help" title = "View Source" >
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< p > Returns the weekstart for < code class = "inline" > date< / code > . If the weekstart is before the < code class = "inline" > not_before< / code >
boundary, < code class = "inline" > not_before< / code > is returned.< / p > < h2 id = "weekstart_not_before/2-examples" class = "section-heading" >
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< a href = "#weekstart_not_before/2-examples" class = "hover-link" >
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< span class = "text" > Examples< / span >
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< / h2 >
< p > In this pseudo-code example, the fragment returns the weekstart. The
< code class = "inline" > not_before< / code > boundary is set to the past Saturday, which is before the
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weekstart, therefore the cap does not apply.< / p > < pre > < code class = "makeup elixir" translate = "no" > < span class = "w" > < / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > this_wednesday< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "ld" > ~D[2022-11-09]< / span > < span class = "w" >
< / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > past_saturday< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "ld" > ~D[2022-11-05]< / span > < span class = "w" >
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< / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > weekstart_not_before< / span > < span class = "p" data-group-id = "5714567517-1" > (< / span > < span class = "n" > this_wednesday< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "n" > past_saturday< / span > < span class = "p" data-group-id = "5714567517-1" > )< / span > < span class = "w" >
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< / span > < span class = "ld" > ~D[2022-11-07]< / span > < / code > < / pre > < p > In this other example, the fragment returns Tuesday and not the weekstart.
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The < code class = "inline" > not_before< / code > boundary is set to Tuesday, which is past the weekstart,
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therefore the cap applies.< / p > < pre > < code class = "makeup elixir" translate = "no" > < span class = "w" > < / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > this_wednesday< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "ld" > ~D[2022-11-09]< / span > < span class = "w" >
< / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > this_tuesday< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "ld" > ~D[2022-11-08]< / span > < span class = "w" >
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< / span > < span class = "o" > > < / span > < span class = "w" > < / span > < span class = "n" > weekstart_not_before< / span > < span class = "p" data-group-id = "9918452464-1" > (< / span > < span class = "n" > this_wednesday< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "n" > this_tuesday< / span > < span class = "p" data-group-id = "9918452464-1" > )< / span > < span class = "w" >
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< / span > < span class = "ld" > ~D[2022-11-08]< / span > < / code > < / pre >
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< / section >
< / section >
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< h1 class = "signature" translate = "no" > wrap_alias(binding, map_literal)< / h1 >
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< section class = "docstring" >
< p > Convenience Ecto macro for wrapping a map passed to select_merge_as such that each
expression gets wrapped in dynamic and set as selected_as.< / p > < h3 id = "wrap_alias/2-examples" class = "section-heading" >
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< span class = "text" > Examples< / span >
< / h3 >
< p > iex> wrap_alias([t], %{ foo: t.column }) |> expand_macro_once
" %{foo: dynamic([t], selected_as(t.column, :foo))}" < / p >
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