Maximum values
Identifier length |
32 characters |
Precision of numeric values |
38 digits |
Number of tables |
unlimited |
Internal length of a table row |
8088 bytes |
Length of a LONG column |
2147483647 bytes |
Number of columns per table (with KEY) |
1024 |
Number of columns per table (without KEY) |
1023 |
Number of primary key columns per table |
512 |
Sum of internal lengths of all key columns |
1024 bytes |
Number of indexes per table |
255 |
Number of columns in an index |
16 |
Sum of internal lengths of all columns belonging to an index |
1024 bytes |
Number of referential CONSTRAINT definitions (foreign key dependencies) per table |
unlimited |
Number of columns in a referential CONSTRAINT definition |
16 |
Number of triggers per table |
3 |
Number of rows per table |
unlimited |
Number of result columns in a SELECT instruction |
1023 |
Number of join tables in a SELECT statement |
64 |
Number of join conditions in a WHERE clause of a SELECT statement |
128 |
Number of correlated columns in an SQL statement |
64 |
Number of correlated columns in an SQL statement |
16 |
Number of the columns in an ORDER or GROUP clause |
128 |
Length of the columns in an ORDER or GROUP clause |
1020 bytes |
Number of parameters in an SQL statement |
2000 |
Length of an SQL statement (Configuration parameter _PACKET_SIZE less administration overhead) |
at least 16000 bytes |