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SQLite C Interface
Virtual Table Constraint Operator Codes
#define SQLITE_INDEX_CONSTRAINT_EQ    2
#define SQLITE_INDEX_CONSTRAINT_GT    4
#define SQLITE_INDEX_CONSTRAINT_LE    8
#define SQLITE_INDEX_CONSTRAINT_LT    16
#define SQLITE_INDEX_CONSTRAINT_GE    32
#define SQLITE_INDEX_CONSTRAINT_MATCH 64
These macros defined the allowed values for the
sqlite3_index_info.aConstraint[].op field.  Each value represents
an operator that is part of a constraint term in the wHERE clause of
a query that uses a virtual table.
See also lists of
  Objects,
  Constants, and
  Functions.