Description Usage Arguments Examples
View source: R/CreateOneJointTable.R
Get 1 table containing the information that main_joint_tables contained joined as given in "db_forced_rel" WITH or WITHOUT Renames as given by "db_ColumnsOldNamesToNewNames"
1 2 3 4 5 6 7 8 | create_extended_joint_table(
db_fields,
db_forced_rel,
db_ColumnsOldNamesToNewNames,
con = db$con,
Verbose = TRUE,
get_sql_query = TRUE
)
|
db_fields |
A DF with columns: "Include, KeyType, Table, Column, Type, RelationshipWithTable, RelationshipWithColumn, Transformation, Comment" about the User Selected fields and Relationships |
db_forced_rel |
A Named String Vector. The vector names MUST point to the main table to be used for the 1-Joint-Table as its LHS. e.g. c(Hours_SiteID = "Site_SiteID", Hours_EmployeeID = "Employee_ID") |
db_ColumnsOldNamesToNewNames |
A named List. Names correspond to the Table names, and the vectors inside will be used to renamed SQL Columns starting with db_ColumnsOldNamesToNewNames[i][j] to db_ColumnsOldNamesToNewNames[i][j+1] with j going from 1 to length of db_ColumnsOldNamesToNewNames[i] by 2 |
con |
is a dbConnect DBI connection object to a SQL Database |
Verbose |
A Boolean. Verbose = TRUE will output the consecutive joins as they happen |
get_sql_query |
A Boolean. get_sql_query = TRUE will create/edit the db$sql_main_joint_tables that output the SQL Code for the tables |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | Example:
db_forced_rel <- c(Hours_SiteID = "Site_SiteID", Hours_EmployeeID = "Employee_ID")
joint_table_With_extended_joins <-
create_extended_joint_table(db_fields,
db_forced_rel = c(Hours_SiteID = "Site_SiteID", Hours_EmployeeID = "Employee_ID"),
db_ColumnsOldNamesToNewNames =
list(
DIM_Employee = c(
c("Site_", "MainSite_")
)
)
)
print(joint_table_Without_extended_joins)
#Renames as given by "db_ColumnsOldNamesToNewNames", create extended joins on main_joint_tables for foreign tables that hold different meaning depending on which table they are joined with, and then everything is joined into 1 table as given by the relationships on "db_forced_rel"
|
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