39 lines
1.6 KiB
R
39 lines
1.6 KiB
R
# 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 primary 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, e.g. 5.3
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#' @export
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createPrimaryKeys <- function(cdmVersion = cdmVersion){
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cdmFieldCsvLoc <- paste0("inst/csv/OMOP_CDMv", cdmVersion, "_Field_Level.csv")
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cdmSpecs <- read.csv(cdmFieldCsvLoc, stringsAsFactors = FALSE)
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primaryKeys <- subset(cdmSpecs, isPrimaryKey == "Yes")
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pkFields <- primaryKeys$cdmFieldName
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sql_result <- c(paste0("--@targetdialect CDM Primary Key Constraints for OMOP Common Data Model ", cdmVersion, "\n"))
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for (pkField in pkFields){
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subquery <- subset(primaryKeys, cdmFieldName==pkField)
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sql_result <- c(sql_result, paste0("\nALTER TABLE @cdmDatabaseSchema.", subquery$cdmTableName, " ADD CONSTRAINT xpk_", subquery$cdmTableName, " PRIMARY KEY NONCLUSTERED (", subquery$cdmFieldName , ");\n"))
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}
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return(paste0(sql_result, collapse = ""))
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}
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