Today, we will learn about the different types of keys in SQL. Basically, there are the following types of keys in SQL. Primary Key Foreign Key Unique Key Composite Key Alternate Key Surrogate Key 1. Primary Key This is the basic key of the SQL table. It identifies a unique row of ...
AI代码解释 CREATETABLEpage_view(viewTimeINT,useridBIGINT,page_urlSTRING,referrer_urlSTRING,ipSTRINGCOMMENT'IP Address of the User')COMMENT'This is the page view table'PARTITIONEDBY(dtSTRING,countrySTRING)CLUSTEREDBY(userid)SORTEDBY(viewTime)INTO32BUCKETSROWFORMATDELIMITEDFIELDSTERMINATEDBY'\001'COLLEC...
SQLPrimaryKeys 函式 SQLProcedureColumns 函式 SQLProcedures 函式 SQLPutData 函式 SQLRowCount 函式 SQLSetConnectAttr 函式 SQLSetConnectOption 函式 SQLSetCursorName 函式 SQLSetDescField 函式 SQLSetDescRec 函式 SQLSetEnvAttr 函式 SQLSetParam 函式 SQLSetPos 函式 SQLSetScrollOptions 函式 SQLSetStmtAttr...
Make any reasonable assumptions about data types, and be sure to declare primary and foreign keys. Solution 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create table person (driver_id varchar(50), name varchar(50), address varchar(50), primary key (driver_id)); create table car (...
SQLPrimaryKeys 函数 SQLProcedureColumns 函数 SQLProcedures 函数 SQLPutData 函数 SQLRowCount 函数 SQLSetConnectAttr 函数 SQLSetConnectOption 函数 SQLSetCursorName 函数 SQLSetDescField 函数 SQLSetDescRec 函数 SQLSetEnvAttr 函数 SQLSetParam 函数 SQLSetPos 函数 SQLSetScrollOptions 函数 SQLSetStmtAttr 函数 SQLSe...
/* Create a master key to protect the secret of the credential */IF NOT EXISTS (SELECT1FROMsys.symmetric_keysWHEREname='##MS_DatabaseMasterKey##')CREATEMASTERKEY;/* (Re-)create a database scoped credential. The name of the credential must match the URI of the blob container. */IF EXIS...
Public Key Cryptography is a form of message secrecy in which a user creates apublickey and aprivatekey. The private key is kept secret, whereas the public key can be distributed to others. Although the keys are mathematically related, the private key cannot be easily derived by using the ...
When you partition a non-unique, clustered index, the Database Engine by default adds the partitioning column to the list of clustered index keys, if it is not already specified. When partitioning a non-unique, nonclustered index, the Database Engine adds the partitioning column as a non-key...
SQLPrimaryKeys 函数 SQLProcedureColumns 函数 SQLProcedures 函数 SQLPutData 函数 SQLRowCount 函数 SQLSetConnectAttr 函数 SQLSetConnectOption 函数 SQLSetCursorName 函数 SQLSetDescField 函数 SQLSetDescRec 函数 SQLSetEnvAttr 函数 SQLSetParam 函数 SQLSetPos 函数 SQLSetScrollOptions 函数 SQLSetStmtAttr 函数 SQLSe...
The intermediate-level pages are filled to near capacity, leaving sufficient space for at least one row of the maximum size the index can have, considering the set of keys on the intermediate pages. This also occurs if PAD_INDEX is set to ON but fill factor isn't specified.For more infor...