pre_sql_identifier

represents a value from a given sub-table or sub-expression
 source is name of source
 name is name for term

internal

A piped query generator based on Edgar F. Codd's relational
algebra, and on production experience using 'SQL' and 'dplyr' at big data
scale.  The design represents an attempt to make 'SQL' more teachable by
denoting composition by a sequential pipeline notation instead of nested
queries or functions.   The implementation delivers reliable high
performance data processing on large data systems such as 'Spark',
databases, and 'data.table'. Package features include: data processing trees
or pipelines as observable objects (able to report both columns
produced and columns used), optimized 'SQL' generation as an explicit
user visible table modeling step, plus explicit query reasoning and checking.

John Mount

rquery

Relational Query Generator for Data Manipulation at Scale

 Win-Vector LLC

pre_sql_identifier function

<dl><dt>column_name</dt>
<dd>character name of column</dd></dl>

Arguments

pre_sql_identifier: abstract name of a column and where it is comming from — pre_sql_identifier

<dl>

<dt>column_name</dt>
<dd>character name of column</dd>

</dl>

pre_sql_identifier: pre_sql_identifier: abstract name of a column and where it is comming from

Description

Usage

Value

Arguments