Description:
Create or delete a Dynamodb table.
Syntax:
dynadb.table(tableName,partitonKey,type1,sortKey,type2)
dynadb.table@d(tableName)
Note:
External library function (See External Library Guide).
Parameter tableName and parameter partitionKey should be present at creation; return the table name if the creation succeeds and return false if the creation fails. The deletion operation only needs option @d and parameter tableName and returns a Boolean value.
Parameter:
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tableName |
Table name |
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partitionKey |
The main partition key |
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type1/type2 |
Data types S, N and B, which represent string, number and binary respectively; default type is S; when type2 is present, type1 cannot be omitted |
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sortKey |
The sorting key, which can be omitted at table creation |
Option:
|
@d |
Perform table deletion |
Return value:
Boolean value/String
Example:
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A |
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1 |
=dyna_open("http://localhost:8000", "us-east-2") |
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2 |
=A1.table("emp1","pid") |
Create emp1 table, where the main partition key is pid and date type is S. |
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3 |
=A1.table("emp2","pid","N") |
Create emp2 table, where the main partition key is pid and date type is N. |
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4 |
=A1.table("emp3","pid","fname") |
Create emp3 table, where the main partition key is pid, sorting key is fname and date type is S. |
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5 |
=A1.table("emp4", "pid","N","fname") |
Create emp4 table, where the data type of pid is N and that of fname is S. |
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6 |
=A1.table("emp5","pid","fname","S") |
Creation of emp5 fails; pid’s data type cannot be omitted when setting data type for fname. |
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7 |
=A1.table("emp6","pid","N","fname","S") |
Create emp6 table, where the data type of pid is N and that of fname is S. |
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8 |
("dept") |
Delete dept table. |
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9 |
>A1.close() |
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