47 lines
2.2 KiB
R
47 lines
2.2 KiB
R
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# Copyright 2019 Observational Health Data Sciences and Informatics
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#
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# This file is part of CdmDdlBase
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#' Create a foreign key sql script from two csv files that detail the OMOP CDM Specifications.
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#' @param cdmVersionNum The version of the CDM you are creating
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#'
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#' @param cdmFieldCsvLoc The location of the csv file with the CDM field information. This is defaulted to "inst/csv/OMOP_CDMv5.3.1_Field_Level.csv".
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#' If a new version of this file was committed to the CDM repository the package automatically will grab it and place it in "inst/csv/".
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#' @param outputFile The name of the output foreign key file. This is defaulted to a location in the inst/sql/sql server folder and named with today's date and CDM version.
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#' @export
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createFkFromFile <- function(cdmVersionNum = cdmVersion,
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cdmFieldCsvLoc = "inst/csv/OMOP_CDMv5.3.1_Field_Level.csv",
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outputFile = paste0("inst/sql/sql_server/OMOP CDM fk ", cdmVersion, " ", Sys.Date(), ".sql")){
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cdmSpecs <- read.csv(cdmFieldCsvLoc, stringsAsFactors = FALSE)
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fks <- subset(cdmSpecs, isForeignKey == "Yes")
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fks$key <- paste0(fks$cdmTableName,"_",fks$cdmFieldName)
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s <- c()
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s <- c(paste0("--@targetdialect CDM Foreign Key Constraints for OMOP Common Data Model ",cdmVersionNum, "\n"))
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for (t in fks$key){
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q <- subset(fks, fks$key==t)
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s <- c(s, paste0("\nALTER TABLE @cdmDatabaseSchema.", q$cdmTableName, " ADD CONSTRAINT fpk_", q$cdmTableName, "_", q$cdmFieldName, " FOREIGN KEY (", q$cdmFieldName ,") REFERENCES @cdmDatabaseSchema.", q$fkTableName, " (", q$fkFieldName, ");\n"))
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}
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SqlRender::writeSql(s, targetFile = outputFile)
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return(s)
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}
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