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Further refactoring of the schema table name.

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FossilOrigin-Name: 9536fa0ae0c1ae6e2e98d2fa11e5acda7f3c9b8ca5061b6f7f8cae63a11d936b
This commit is contained in:
drh
2020-06-19 13:33:53 +00:00
parent ccb2113a62
commit 1e32bed3c1
22 changed files with 115 additions and 104 deletions
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10
src/expr.c
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@@ -1993,10 +1993,10 @@ Expr *sqlite3ExprSimplifiedAndOr(Expr *pExpr){
**
** The sqlite3ExprIsConstantOrFunction() is used for evaluating DEFAULT
** expressions in a CREATE TABLE statement. The Walker.eCode value is 5
** when parsing an existing schema out of the sqlite_master table and 4
** when parsing an existing schema out of the sqlite_schema table and 4
** when processing a new CREATE TABLE statement. A bound parameter raises
** an error for new statements, but is silently converted
** to NULL for existing schemas. This allows sqlite_master tables that
** to NULL for existing schemas. This allows sqlite_schema tables that
** contain a bound parameter because they were generated by older versions
** of SQLite to be parsed by newer versions of SQLite without raising a
** malformed schema error.
@@ -2058,7 +2058,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
if( pWalker->eCode==5 ){
/* Silently convert bound parameters that appear inside of CREATE
** statements into a NULL when parsing the CREATE statement text out
** of the sqlite_master table */
** of the sqlite_schema table */
pExpr->op = TK_NULL;
}else if( pWalker->eCode==4 ){
/* A bound parameter in a CREATE statement that originates from
@@ -2191,12 +2191,12 @@ int sqlite3ExprIsConstantOrGroupBy(Parse *pParse, Expr *p, ExprList *pGroupBy){
** the expression is constant or a function call with constant arguments.
** Return and 0 if there are any variables.
**
** isInit is true when parsing from sqlite_master. isInit is false when
** isInit is true when parsing from sqlite_schema. isInit is false when
** processing a new CREATE TABLE statement. When isInit is true, parameters
** (such as ? or $abc) in the expression are converted into NULL. When
** isInit is false, parameters raise an error. Parameters should not be
** allowed in a CREATE TABLE statement, but some legacy versions of SQLite
** allowed it, so we need to support it when reading sqlite_master for
** allowed it, so we need to support it when reading sqlite_schema for
** backwards compatibility.
**
** If isInit is true, set EP_FromDDL on every TK_FUNCTION node.