问题描述
我有一个很大的sql db(7gbs),其中的字段似乎在其中带有引号。
例如:
res <- dbSendQuery(con,"
SELECT *
FROM master")
dbf2 <- fetch(res,n = 3)
dbClearResult(res)
收益
NPI EntityTypeCode ReplacementNPI EmployerIdentificationNumber.EIN.
1 "1679576722" "1" "" ""
2 "1588667638" "1" "" ""
3 "1497758544" "2" "" "<UNAVAIL>"
ProviderOrganizationName.LegalBusinessName. ProviderLastName.LegalName. ProviderFirstName
1 "" "WIEBE" "DAVID"
2 "" "PILCHER" "WILLIAM"
3 "CUMBERLAND COUNTY HOSPITAL SYstem,INC" "" ""
我一直在尝试通过过滤EntityTypeCode
来获得较小的表格,但没有得到任何结果。这是一个查询没有得到任何建议的示例?我认为问题是在字段中使用双引号。
# Filter on State
res <- dbSendQuery(npi2,"
SELECT *
FROM master
WHERE (ProviderBusinessPracticeLocationAddressstateName = 'PA')
")
# Filter on State and type
res <- dbSendQuery(npi2,"
SELECT *
FROM master
WHERE (ProviderBusinessPracticeLocationAddressstateName = 'PA') AND
(EntityTypeCode = '1')
")
解决方法
用dd($request->all())
转义内部双引号( ie ,即单元格中的双引号)。
\
这将产生以下字符串:
res <- dbSendQuery(npi2,"
SELECT *
FROM master
WHERE (ProviderBusinessPracticeLocationAddressStateName = '\"PA\"') AND
(EntityTypeCode = '1')
")