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Some work on indexes/write support. Bug fixes. Preliminary temp table/worktable work.

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This commit is contained in:
brianb
2004-01-09 21:05:56 +00:00
parent 09ec4202dd
commit d39cc57b44
9 changed files with 315 additions and 93 deletions
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175
src/sql/mdbsql.c
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@@ -418,6 +418,10 @@ MdbSQLSarg *sql_sarg;
mdb_free_tabledef(sql->cur_table);
sql->cur_table = NULL;
}
if (sql->kludge_ttable_pg) {
g_free(sql->kludge_ttable_pg);
sql->kludge_ttable_pg = NULL;
}
for (i=0;i<sql->num_columns;i++) {
c = g_ptr_array_index(sql->columns,i);
mdb_sql_free_column(c);
@@ -476,9 +480,18 @@ int vlen;
}
void mdb_sql_listtables(MdbSQL *sql)
{
int i;
MdbCatalogEntry *entry;
MdbHandle *mdb = sql->mdb;
int i;
MdbCatalogEntry *entry;
MdbHandle *mdb = sql->mdb;
MdbField fields[4];
int num_fields = 0;
char tmpstr[256];
unsigned char row_buffer[4096];
unsigned char *new_pg;
int row_size;
MdbTableDef *ttable, *table = NULL;
MdbColumn *col, tcol;
MdbSQLColumn *sqlcol;
if (!mdb) {
mdb_sql_error("You must connect to a database first");
@@ -486,36 +499,63 @@ MdbHandle *mdb = sql->mdb;
}
mdb_read_catalog (mdb, MDB_TABLE);
ttable = mdb_create_temp_table(mdb, "#listtables");
memset(&tcol,0,sizeof(MdbColumn));
strcpy(tcol.name, "Tables");
tcol.col_size = 30;
tcol.col_type = MDB_TEXT;
tcol.is_fixed = 0;
mdb_temp_table_add_col(ttable, &tcol);
mdb_sql_add_column(sql, "Tables");
sqlcol = g_ptr_array_index(sql->columns,0);
sqlcol->disp_size = mdb_col_disp_size(&tcol);
/* blank out the pg_buf */
new_pg = mdb_new_data_pg(ttable->entry);
memcpy(mdb->pg_buf, new_pg, mdb->fmt->pg_size);
g_free(new_pg);
print_break (30,1);
fprintf(stdout,"\n");
print_value ("Tables",30,1);
fprintf(stdout,"\n");
print_break (30,1);
fprintf(stdout,"\n");
/* loop over each entry in the catalog */
for (i=0; i < mdb->num_catalog; i++) {
entry = g_ptr_array_index (mdb->catalog, i);
/* if it's a table */
if (entry->object_type == MDB_TABLE) {
if (strncmp (entry->object_name, "MSys", 4)) {
print_value (entry->object_name,30,1);
fprintf(stdout,"\n");
entry = g_ptr_array_index (mdb->catalog, i);
/* if it's a table */
if (entry->object_type == MDB_TABLE) {
if (strncmp (entry->object_name, "MSys", 4)) {
col = g_ptr_array_index(table->columns,0);
fields[0].value = entry->object_name;
fields[0].siz = strlen(entry->object_name);
fields[0].is_fixed = 0;
fields[0].is_null = 0;
fields[0].start = 0;
fields[0].colnum = 0;
row_size = mdb_pack_row(ttable, row_buffer, 1, &fields);
mdb_add_row_to_pg(ttable,row_buffer, row_size);
ttable->num_rows++;
}
}
}
print_break (30,1);
fprintf(stdout,"\n");
sql->kludge_ttable_pg = g_memdup(mdb->pg_buf, mdb->fmt->pg_size);
sql->cur_table = ttable;
}
void mdb_sql_describe_table(MdbSQL *sql)
{
MdbTableDef *table = NULL;
MdbSQLTable *sql_tab;
MdbCatalogEntry *entry;
MdbHandle *mdb = sql->mdb;
MdbColumn *col;
int i;
char colsize[11];
MdbTableDef *ttable, *table = NULL;
MdbSQLTable *sql_tab;
MdbCatalogEntry *entry;
MdbHandle *mdb = sql->mdb;
MdbColumn *col, tcol;
MdbSQLColumn *sqlcol;
int i;
char colsize[11];
MdbField fields[4];
int num_fields = 0;
char tmpstr[256];
unsigned char row_buffer[4096];
unsigned char *new_pg;
int row_size;
if (!mdb) {
mdb_sql_error("You must connect to a database first");
@@ -543,35 +583,78 @@ char colsize[11];
mdb_read_columns(table);
print_break (30,1);
print_break (20,0);
print_break (10,0);
fprintf(stdout,"\n");
print_value ("Column Name",30,1);
print_value ("Type",20,0);
print_value ("Size",10,0);
fprintf(stdout,"\n");
print_break (30,1);
print_break (20,0);
print_break (10,0);
fprintf(stdout,"\n");
ttable = mdb_create_temp_table(mdb, "#describe");
memset(&tcol,0,sizeof(MdbColumn));
strcpy(tcol.name, "Column Name");
tcol.col_size = 30;
tcol.col_type = MDB_TEXT;
tcol.is_fixed = 0;
mdb_temp_table_add_col(ttable, &tcol);
mdb_sql_add_column(sql, "Column Name");
sqlcol = g_ptr_array_index(sql->columns,0);
sqlcol->disp_size = mdb_col_disp_size(&tcol);
memset(&tcol,0,sizeof(MdbColumn));
strcpy(tcol.name, "Type");
tcol.col_size = 20;
tcol.col_type = MDB_TEXT;
tcol.is_fixed = 0;
mdb_temp_table_add_col(ttable, &tcol);
mdb_sql_add_column(sql, "Type");
sqlcol = g_ptr_array_index(sql->columns,1);
sqlcol->disp_size = mdb_col_disp_size(&tcol);
memset(&tcol,0,sizeof(MdbColumn));
strcpy(tcol.name, "Size");
tcol.col_size = 10;
tcol.col_type = MDB_TEXT;
tcol.is_fixed = 0;
mdb_temp_table_add_col(ttable, &tcol);
mdb_sql_add_column(sql, "Size");
sqlcol = g_ptr_array_index(sql->columns,2);
sqlcol->disp_size = mdb_col_disp_size(&tcol);
/* blank out the pg_buf */
new_pg = mdb_new_data_pg(ttable->entry);
memcpy(mdb->pg_buf, new_pg, mdb->fmt->pg_size);
g_free(new_pg);
for (i=0;i<table->num_cols;i++) {
col = g_ptr_array_index(table->columns,i);
print_value (col->name,30,1);
print_value (mdb_get_coltype_string(mdb->default_backend, col->col_type),20,0);
fields[0].value = col->name;
fields[0].siz = strlen(col->name);
fields[0].is_fixed = 0;
fields[0].is_null = 0;
fields[0].start = 0;
fields[0].colnum = 0;
strcpy(tmpstr, mdb_get_coltype_string(mdb->default_backend, col->col_type));
fields[1].value = tmpstr;
fields[1].siz = strlen(tmpstr);
fields[1].is_fixed = 0;
fields[1].is_null = 0;
fields[1].start = 0;
fields[1].colnum = 1;
sprintf(colsize,"%d",col->col_size);
print_value (colsize,10,0);
fprintf(stdout,"\n");
fields[2].value = colsize;
fields[2].siz = strlen(colsize);
fields[2].is_fixed = 0;
fields[2].is_null = 0;
fields[2].start = 0;
fields[2].colnum = 2;
row_size = mdb_pack_row(ttable, row_buffer, 3, &fields);
mdb_add_row_to_pg(ttable,row_buffer, row_size);
ttable->num_rows++;
}
print_break (30,1);
print_break (20,0);
print_break (10,0);
fprintf(stdout,"\n");
/* the column and table names are no good now */
mdb_sql_reset(sql);
//mdb_sql_reset(sql);
sql->kludge_ttable_pg = g_memdup(mdb->pg_buf, mdb->fmt->pg_size);
sql->cur_table = ttable;
}
int mdb_sql_find_sargcol(MdbSargNode *node, gpointer data)